FCC ID: O9P-905UL FREQUENCY HOPPING SPREAD SPECTRUM 900 MHz ONE WAY LINK SYSTEM

Installation Manual 905U-L Wireless I/O V e r s i o n 1 . 9 man_905U-L_installation_v1.9.doc 905U-L Wireless I/O Installation Manual Document information Installation Manual 905U-L Wireless I/O Version 1.9 ELPRO contact details 9 /12 Billabong Street Stafford, QLD 4053

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Copyright Copyright ELPRO Technologies Pty Ltd. All rights reserved. Limited lifetime warranty, disclaimer and limitation of remedies ELPRO products are warranted to be free from manufacturing defects for the serviceable lifetime of the product. The serviceable lifetime is limited to the availability of electronic components. If the serviceable life is reached in less than three years following the original purchase from ELPRO, ELPRO will replace the product with an equivalent product if an equivalent product is available. This warranty does not extend to:

Failures caused by the operation of the equipment outside the particular product's specification, or

- Use of the module not in accordance with this User Manual, or

Abuse, misuse, neglect or damage by external causes, or

- Repairs, alterations, or modifications undertaken other than by an authorized Service Agent. ELPROs liability under this warranty is limited to the replacement or repair of the product. This warranty is in lieu of and exclusive of all other warranties. This warranty does not indemnify the purchaser of products for any consequential claim for damages or loss of operations or profits and ELPRO is not liable for any consequential damages or loss of operations or profits resulting from the use of these products. ELPRO is not liable for damages, losses, costs, injury or harm incurred as a consequence of any representations, warranties or conditions made by ELPRO or its representatives or by any other party, except as expressed solely in this document. 905U-L Wireless I/O Version 1.9 Page 2 of 40 Contents 905U-L Wireless I/O Installation Manual Contents __________________________________________________________________ 3 About this document ............................................................................................................................ 7 Installing your unit __________________________________________________________ 8 Unit components and connections....................................................................................................... 9 Transmitter unit ............................................................................................................................................... 9 Receiver unit ................................................................................................................................................. 11 Installing the antenna ......................................................................................................................... 13 Supported antennas ...................................................................................................................................... 13 Radio transmission distances ........................................................................................................................ 15 Installing and earthing antennas ................................................................................................................... 16 Dipole and collinear antennas ....................................................................................................................... 17 Dipole antennas ........................................................................................................................................ 17 Collinear antennas .................................................................................................................................... 17 Yagi antennas ............................................................................................................................................... 19 Installing the power supply ................................................................................................................ 21 Inputs and outputs _________________________________________________________ 22 Digital inputs .................................................................................................................................................. 23 Relay outputs ................................................................................................................................................ 24 Status outputs ............................................................................................................................................... 25 Analog input .................................................................................................................................................. 26 Thermocouple input....................................................................................................................................... 29 Pulse input .................................................................................................................................................... 30 Analog output ................................................................................................................................................ 31 Installing and configuring the unit ____________________________________________ 33 Installing the unit ................................................................................................................................ 34 Configuring your units ........................................................................................................................ 35 Testing your units .............................................................................................................................. 36 Unit specifications _________________________________________________________ 37 Transmitter unit .................................................................................................................................. 37 Receiver unit ...................................................................................................................................... 37 Ancillary hardware reference information .......................................................................................... 38 RS232 serial cable ........................................................................................................................................ 38 Index ____________________________________________________________________ 39 905U-L Wireless I/O Version 1.9 Page 3 of 40 This page intentionally left blank. 905U-L Wireless I/O Installation Manual 905U-L Wireless I/O Version 1.9 Page 4 of 40 905U-L Wireless I/O Installation Manual

**IMPORTANT ELECTRICAL SAFETY INFORMATION**

In order to comply with Electrical Safety Regulations, this module must be installed in an Electrical AND Fire enclosure. This enclosure may be a single or multiple enclosures. Access to the module is to be made by a Service Person only. INFORMATION**

Warning:

Incorrect termination of supply wires may cause internal damage and will void warranty. To ensure your 905U-L enjoys a long life, double-check ALL your connections with the Installation Guide before powering on the module. FCC Notice:

This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions:

This device may not cause harmful interference; and This device must accept any interference received, including interference that may cause undesired operation This device must be operated as supplied by ELPRO Technologies Pty Ltd. Any changes or modifications made to the device without the written consent of ELPRO Technologies Pty Ltd may void the users authority to operate the device. End user products that have this device embedded must be installed by experienced radio and antenna personnel, or supplied with non-standard antenna connectors, and antennas available from vendors specified by ELPRO. Please contact ELPRO for end user antenna and connector recommendations. In accordance with 47 CFR Part 15 Subpart C Section 15.203 only the following antenna/coax cable kits combinations can be used. Manufacturer Model Number Coax Kit ELPRO ELPRO ELPRO ELPRO ELPRO ELPRO ELPRO ELPRO DG900-1 DG900-5 Includes 1m Cellfoil Includes 5m Cellfoil CFD890EL Includes 5m Cellfoil SG-900EL SG-900EL SG-900-6 SG-900-6 YU6/900 CC10/900 CC20/900 CC10/900 CC20/900 CC20/900 Net

-2dBi Loss

-3dBi Loss Unity Gain 1.8dBi Gain

-1.2dBi Loss 4.8dBi Gain 1.8dBi Gain 3.8dBi Gain Part Additional information 15 This device has been tested and found to comply with the limits for a Class B digital device, pursuant to Part15 of the FCC rules (Code of Federal Regulations 47CFR Part 15). Operation is subject to the condition that this device does not cause harmful interference. 905U-L Wireless I/O Version 1.9 Page 5 of 40 Safety Notice:

905U-L Wireless I/O Installation Manual Exposure to RF energy is an important safety consideration. The FCC has adopted a safety standard for human exposure to radio frequency electromagnetic energy emitted by FCC regulated equipment as a result of its actions in Docket 93-62 and OET Bulletin 65 Edition 97-01. Industry Canada: 905U Wireless I/O Module RSS-119 - This device has been type accepted for operation by Industry Canada in accordance with RSS-119 of the Industry Canada rules. See the label on the unit for the specific Industry Canada certification number and any other certification designations. Any changes or modifications not expressly approved by ELPRO Technologies P/L could void the users authority to operate this equipment. To operate this equipment legally the user must obtain a radio-operating license from the government agency. This is done so the government can coordinate radio users in order to minimize interference. UL Notice:

THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS I DIVISION 2 GROUPS A,B,C AND D HAZARDOUS LOCATIONS, OR NONHAZARDOUS LOCATIONS ONLY. WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOWN TO BE FREE OF IGNITABLE CONCENTRATIONS. WARNING - EXPLOSION HAZARD - SUBSTITUTION OF ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2. 1. The Wireless I/O module is to be installed by trained personnel / licensed electricians only and installation must be carried out in accordance with the instructions listed in the Installation Guide and applicable local regulatory codes. 2. The units are intended for Restricted Access Locations. 3. The Wireless I/O module is intended to be installed in a final enclosure, rated IP54, before use outdoors. 4. The Equipment shall be powered using an external Listed Power Supply with LPS outputs or a Class 2 Power Supply. 5. The Wireless I/O module must be properly grounded for surge protection before use. 905U-L Wireless I/O Version 1.9 Page 6 of 40 About this document 905U-L Wireless I/O Installation Manual This document is the 905U-L Wireless I/O Installation Manual that describes how to install your 905U-L units and contains important information for installing your units with other equipment. Note If your network only contains one transmitter and receiver pair, you should also read the 905U-L QuickStart Guides. This document contains the following sections:

Section Read this section if you want to Basic steps for using your unit Learn the basic steps for installing and using your unit. Factory default configuration Understand how the transmitter sends information to the receiver. Unit components Understand the different parts of your unit. Antenna installation Learn how to install an antenna with your unit. Resetting factory defaults Reset your unit to the original factory default settings. Linking transmitter and receiver units Link your units to work as a dedicated pair. Safety information Understand important safety information related to your unit. NOTE: You must read this information before installing your unit. Specifications Know technical information about your unit. For more information, see the next sections. 905U-L Wireless I/O Version 1.9 Page 7 of 40 Installing your unit 905U-L Wireless I/O Installation Manual This section describes how to install your unit and contains the following sections:

Step Description For more information, see 1 Read the safety information Lets you understand important safety information related to your unit. NOTE: You must read this information before installing your unit. Warning:

on page 5. 2 Get to know the unit features Understand the basic features of your unit. Unit components and connections on page 9. 3 Install the antenna Learn how to install an antenna with your unit. Installing the antenna on page 13. 4 Install the power supply Learn how to install a power supply for your unit. Installing the power supply on page 21. 5 Install the units Learn how to install your unit. Installing the unit on page 34. 6 Linking and configuring the unit 7 Test the unit Note Learn how to link and configure your units to transmit and receive information. Understand the principles for testing your units. Configuring your units on page 35. Testing your units on page 36. To ensure internal surge protection works correctly, you must earth each unit using the Earth terminal. For more information, see the next sections. 905U-L Wireless I/O Version 1.9 Page 8 of 40 905U-L Wireless I/O Installation Manual Unit components and connections This section shows the components and terminal connections for the transmitter and receiver units. Transmitter unit The 905U-L-T transmitter unit has the following components and terminal connections:

Earth Wire Lug underneath Unit Page 9 of 40 905U-L Wireless I/O Version 1.9 The front panel contains the following components:

905U-L Wireless I/O Installation Manual The triangle on the rotary switch indicates the current position, for example:

Position 0 Position 1 NOTE: To avoid damaging the rotary switch, use a screwdriver to change the position. The rotary switch controls the setpoint levels on the Analog and Thermocouple inputs. The LEDs on the front panel indicate the unit status:

LED Status Indicates None No power supply. OK LED Green Current status of the unit OK. OK LED Red Fault condition detected in unit. TX Led Flashes Transmitting Message. PG LED on Configuration Cable Connected. Input LED ON Input LEDS (i.e. D1, D2, SP, AZ.) light when the corresponding input is active. D1 D2 SP AZ Digital Input 1 is active (Low). Digital Input 2 is active. Analog Setpoint is active. Analog Input is zero mA All LEDs medium flash Medium speed flash (1.6HZ) indicates the module is halfway through the configuration process. Medium flash also happens when you set the rotary switch to position 0 when powering on the unit. 905U-L Wireless I/O Version 1.9 Page 10 of 40 SMA antenna connector at top of unit Rotary switch for set-point settings RS232 configuration port Receiver unit 905U-L Wireless I/O Installation Manual Your 905U-L-R unit has the following components and terminal connections:

905U-L Wireless I/O Version 1.9 Page 11 of 40 Max. 30VDC 500mA + For inductive load, use surge diodes + LOAD LOAD - + SYSTEM OK COMMS FAIL COMMON AO - + POWER SUPPLY + 24V ANALOG OUTPUT Max. analog load 900 ohm - + DO 3 DO 3 DO 2 DO 1 DO contacts are rated at 1A, 250VAC For good engineering practice, use a surge diode for DC loads and a surge capacitor (10nF 250V) for AC loads DC LOAD AC LOAD + - POWER SUPPLY 9 30 VDC 250mA @ 12V 125mA @ 24V DO 1 DO 2 - NOT USED - NOT USED - - - - - - -

The front panel contains the following components:

905U-L Wireless I/O Installation Manual The LEDs on the front panel indicate the unit status:

LED Status Indicates None No power supply. OK LED Green Current status of the unit OK. OK LED Red Fault condition detected in unit. RX Led Flashes Receiving Message. CF Led ON PG LED on Module Communication Failure Output is active. Configuration Cable Connected. Output LED ON The Output LEDS (i.e. D1, D2, D3) light when the corresponding output is active. D1 D2 D3 Relay output D1 is ON (Contact Closed). Relay Output D2 is ON. Relay Output D3 is ON. LEDs with RSSI Push Button Pressed When you press the RSSI push button, the unit shows the signal strength by lighting the LEDs from the bottom to the top. Signal strength is the strength of the last message received that was addressed to this station. Output LED flashing quickly LED Signal Strength LED Signal Strength D1 D2 D3 More than -85 dBm More than -90 dBm More than -95 dBm RX CF PG More than -100 dBm More than -105 dBm Always on during RSSI test If an output is in communication failure, the corresponding LED flashes at 5 Hz. D1 D2 D3 PG Relay Output D1 is in communication failure. Relay Output D2 is in communication failure. Relay Output D3 is in communication failure. Analog output is in communications failure. 905U-L Wireless I/O Version 1.9 Page 12 of 40 SMA antenna connector at top of unit RSSI push-button RS232 configuration port Installing the antenna 905U-L Wireless I/O Installation Manual This section explains how to install your antenna and contains the following sections:

Section Description For more information, see Supported antennas and cables Details the antennas and cables you can use with the units. Supported antennas on page 13. Radio transmission distances Details the distances for reliable operation. Radio transmission distances on page 15. Installing and earthing antennas Details important information about installing and earthing antennas. Installing and earthing antennas on page 16 Dipole and collinear antennas Details important information about using dipole and collinear antennas. Dipole and collinear antennas on page 17. Yagi antennas Details important information about using Yagi antennas. Yagi antennas on page 19. For more information, see the next sections. Supported antennas You can use the following antennas with the units:

Antenna Additional information Total gain

(including cable) WH900 Whip antenna for mounting directly onto the module - operation up to mile (1 km).

-6 dBi CFD890EL 0 dBi Dipole antenna with 15 of Cellfoil cable and SMA connector. 0 dBi SG900EL 5dBi Collinear omni-directional antenna with N-type connector. SG900-6 8dBi Collinear omni-directional antenna with N-type connector. YU6/900 10dBi Yagi directional antenna with N-type connector. YU16/900 15dBi Yagi directional antenna with N-type connector. You can use the following cables with the units:

5 dBi 8 dBi 10 dBi 15 dBi The following table shows compatible cables for different antennas when used with the 905U-L-T:

Antenna North America Australia/NZ SG900EL Any cable. SG900-6 Any cable. CC10 or CC20. CC20. YU6/900 CC20. External cable with loss > 9dB. YU16/900 External cable with loss > 9dB. External cable with loss > 15 dB 905U-L Wireless I/O Version 1.9 Page 13 of 40 905U-L Wireless I/O Installation Manual You must carefully select antennas for 905U-L-T modules to avoid contravening the maximum power limit on the unlicensed channel. The net gain of the antenna/cable configuration should be no more than 6dB in North America (USA, Canada, Mexico) and no more than 0 dB in Australia / New Zealand. Note The net gain of an antenna/cable configuration is the gain of the antenna (in dBi) less the loss in the coaxial cable (in dB). For example, an SG900-6 antenna with a CC20/900 cable has a net gain of 2dB (i.e. +8 dB 6 dB) at 900 MHz. The 905U-L-R module has no limitation on antenna gain, as this module does not incorporate a radio transmitter. The following table details the gains of some typical antennas:

Antenna Gain (dBi) Dipole with integral 3m cable Dipole without cable 5dBi Collinear (3dBd) 8dBi Collinear (6dBd) 3 element Yagi 6 element Yagi 0 2 5 8 5 10 The following table details losses for typical cables:

Cable Loss (dB per 10m) at 900 MHz RG58

-5 RG213

-2.5 Cellfoil

-3 905U-L Wireless I/O Version 1.9 Page 14 of 40 905U-L Wireless I/O Installation Manual Radio transmission distances The unit will operate reliably over large distances depending on the:

Antenna type;

Antenna location;

Amount of radio interference; and Radio path obstructions (e.g. hills or trees). Typical reliable distances are:

Area Distance Additional information USA/Canada 20+ miles 6dB net gain antenna configuration permitted (4W Equivalent RF power permitted). Australia/NZ 20+ km Unity gain antenna configuration (1W Equivalent RF power permitted). To achieve these distance, you must elevate at least one site on a hill or transmission tower. Modules will operate reliably with some radio path obstruction; however obstructions also reduce the reliable distance. Note You must test all obstructed paths to check the reliability of the path. You can achieve maximum transmission distances if the radio path has line of sight. For example, raising antennas above intermediate obstructions including hills, trees, etc. Obstructions reduce the range; however they may not prevent a reliable path. The closer the obstruction is to the antenna, the greater the blocking effect. For example, a group of trees around the antenna is a larger obstruction than a group of trees further away from the antenna. You can achieve longer distances by mounting one antenna on top of a hill. Note Due to the earths curvature, you must elevate antennas higher than the ground level between the antennas for longer paths (greater than 3 miles / 5 km). The unit can tolerate larger amounts of obstructions for shorter distances. For very short distances, you can also mount the antennas inside buildings. If two 905U modules cannot communicate reliably, you can use a third 905U module as a repeater to receive and re-transmit messages. This module may also have input/output

(I/O) signals connected to it and form part of the I/O network. Note 1. ELPRO recommends using the 905U-G module as a repeater unit between 905U-L-T and 905U-L-R modules. 2. To use a repeater unit, the 905U-L modules and the repeater module must be configured using the supplied configuration software. The factory default configuration described in the Quick Start Guide cannot use a repeater unit. 905U-L Wireless I/O Version 1.9 Page 15 of 40 905U-L Wireless I/O Installation Manual Installing and earthing antennas You must connect an antenna to each 905 module using the SMA connector at the top of the enclosure. ELPRO recommends carefully taping the connections between the antenna and coaxial cable to prevent moisture ingress. Moisture ingress in the coaxial cable is a common cause of radio system problem as it greatly increases the radio losses. ELPRO recommends taping the connection with three layers of tape:

Layer Tape 1 2 3 PVC tape. Vulcanising tape (e.g. 3M 23 tape). Additional layer of PVC UV-stabilized insulating tape. The first tape layer lets you easily inspect the joint if required as you can easily remove the vulcanising seal. Note You must effectively earth all masts for mast-mounted antennas to avoid lightning surges. We also recommend using a coaxial surge diverter for antennas mounted outside industrial plant environments. If the antenna is not already shielded from lightning strike by an adjacent earthed structure, you can provide shielding by installing a lightning rod above the antenna. You should connect the antenna to the module using 50 ohm coaxial cable (e.g. RG58 or RG213) terminated with a male coaxial connector, The higher the antenna is mounted, the greater the transmission range; however as the length of coaxial cable increases so do cable losses. For use on unlicensed frequency channels, there are several types of antenna suitable for use. If you mount antennas on elevated masts, you should effectively earth the masts to avoid lightening surges. The 905U-L radios are fitted with surge protection. Note For high lightening risk areas, ELPRO recommends additional surge suppression devices. If the antenna is not already shielded from lightening strike by an adjacent earthed structure, you can install a lightening rod to provide shielding. 905U-L Wireless I/O Version 1.9 Page 16 of 40 905U-L Wireless I/O Installation Manual Dipole and collinear antennas This section contains important information for using dipole and collinear antennas. For more information, see the next sections. Dipole antennas Unity gain dipole antennas are commonly used on unlicensed channels. The dipole antenna does not provide any gain, so the power transmitted from the antenna is the same as the power out of the module. A dipole antenna that comes supplied with integral 15 ft cable does not require additional coaxial cable. You should mount dipole antennas vertically, preferably no less than 1 metre away from a wall or mast for maximum performance. Collinear antennas Collinear antennas transmit the same amount of radio power in all directions horizontally, and are easy to install and use. They provide gain by compressing the radiated signal to a flattened disc shape, and reducing the amount of signal radiated above and below the horizontal plane. Collinear antennas are generally used at a central site with more than one remote site, or at a repeater site. Collinear antennas are similar in appearance to dipole antennas; however the antenna is longer. Collinear antennas are supplied without cable, and require additional coaxial cable. You can use collinear antennas to:

Transmitter to compensate for the losses in long lengths of coaxial cable. Receiver to increase receive sensitivity. 905U-L Wireless I/O Version 1.9 Page 17 of 40 The following diagrams shows the recommended installation for collinear and dipole antennas:

905U-L Wireless I/O Installation Manual 905U-L Wireless I/O Version 1.9 Page 18 of 40 Yagi antennas 905U-L Wireless I/O Installation Manual Yagi antennas are directional and have positive gain to the front of the antenna and negative gain in other directions. You can use the gain to:

Compensate for coaxial cable loss for transmitter unit; and Increase receive sensitivity for receiver units. You should install Yagi antennas with the central beam horizontal and pointed directly in the transmission direction to benefit from the antenna gain. Note Yagi antennas usually have a drain hole on the folded element. You should position the drain hole at the bottom when installing the antenna. You can install Yagi antennas:

Vertically polarized with the elements in a vertical plane; or Horizontally polarized with the elements in a horizontal plane. The following table shows the recommended installation mode for different situations. If your installation has ELPRO recommends using Two stations both using Yagi antennas Horizontal polarization for the stations. Two or more stations communicating with a common station Vertical polarization for the stations; and Dipole or collinear (i.e. non-directional) antenna for the central station. 905U-L Wireless I/O Version 1.9 Page 19 of 40 905U-L Wireless I/O Installation Manual The following diagrams shows the recommended installation for collinear and dipole antennas:

905U-L Wireless I/O Version 1.9 Page 20 of 40 905U-L Wireless I/O Installation Manual Installing the power supply The unit works with a 9-30 VDC 0.6 Amp CSA certified Class 2 power supply. For use in Class 1 Div 2 explosive areas, the power supply must be approved for Class 1 Div 2 use. Warning explosion hazard Do not disconnect while circuit is live unless area is known to be non-hazardous. The following table shows the power supply requirements:

Power supply 905U-L-T 905U-L-R 12V 24V 600 mA 300 mA 250 mA 125 mA The power supply can be a floating supply or negatively grounded. The transmitter provides a 24V DC regulated supply for analog loop power. The supply is rated at 35 mA and should ONLY be used for powering analog loops. To install the power supply:

1. Connect the positive lead to Power Supply Input. 2. Connect the negative lead to Ground. Note To ensure internal surge protection works correctly, you must earth each unit using the Earth terminal. You should connect the module to the same ground/earth point as the antenna mounting to avoid differences in earth potential during voltage surges. Do NOT connect the positive side of the supply to Earth. 3. The following diagram illustrates the connection:

Ground 905U-L Wireless I/O Version 1.9 Page 21 of 40 905U-L Wireless I/O Installation Manual Inputs and outputs The units have the following inputs and outputs:

Input/output 905U-L-T 905U-L-R Description For more information, see Digital inputs Relay outputs Status outputs Analog inputs

+24V Loop supply Analogue setpoint Thermocouple /

millivolt input Thermocouple setpoint Pulse inputs Analog output 2 2 1 1 1 1 1 2 3 2 Suitable for Voltage free contact, NPN transistor, 0-5V signal. Digital inputs on page 23. 250VAC 1A / 30VDC 1A. Max 30VDC, 500 mA. Indicate module status, communication failure and local setpoint status. Relay outputs Important Information on page 24. Status outputs on page 25. 4-20 mA with over-range and under-range. Analog input on page 26. 0-10 mA with over-range. Provides power for 1 external current loop (up to 35 mA). Installing the power supply on page 21. Allows discrete setpoint to be controlled from analog input. Threshold adjustable via rotary switch. Provides measurement of E, J, K, T type Thermocouple, millivolt signals and user-defined thermocouple types. Refer to the User Manual. Thermocouple input on page 29 Lets you control discrete setpoint from thermocouple with threshold adjustable via rotary switch. Refer to the User Manual. Up to 10Hz. Pulse input on page 30. Analog output on page 31. 1 0-22 mA, suitable for loop powered, floating input or single-

ended input device. For more information, see the next sections. 905U-L Wireless I/O Version 1.9 Page 22 of 40 Digital inputs 905U-L Wireless I/O Installation Manual The 905U-L-T module provides two digital inputs suitable for:

Voltage free contacts e.g. mechanical switches; or NPN transistor devices e.g. electronic proximity switches; or 0-5V signals - 2V 4V Minimum range. Note PNP transistor devices are not suitable. The unit provides contact wetting current of approximately 5mA to maintain reliable operation of driving relays. Each digital input is connected between the appropriate Digital Input terminal and Ground. Each digital input circuit includes a LED indicator that lights when the digital input is active

(i.e. when the input circuit is closed). To activate the digital input, the switching device resistance must be less than 200 ohms. Example Connection method Voltage free contact Active 0-5v signal device 905U-L Wireless I/O Version 1.9 Page 23 of 40 Relay outputs 905U-L Wireless I/O Installation Manual The 905U-L-R module provides three normally open voltage-free relay contacts rated at 250VAC / 30VDC 1A. You can use these outputs to directly control low-powered equipment or power larger relays for higher-powered equipment. For inductive loads, ELPRO recommends:

DC relays - use flyback diodes across the external circuit to prevent arcing across the relay contacts. DC Load Max 30VDC 1A AC relays use capacitors (e.g. 10nf 250V) to prevent arcing across the relay contacts. 10nF 250V AC Load Max 250VAC 1A You can individually configure digital outputs to turn off if no command message is received by the output for a certain period. This feature provides an intelligent watchdog for each output, so communications failure at a transmitting site causes the output to revert to a known state. The output circuit is connected to the appropriate pair of Digital Output terminals. Each digital output circuit includes a LED indicator that lights when the digital output is active. The LED flashes if the watchdog alarm is active. IMPORTANT SAFETY INFORMATION In order to comply with Electrical Safety Standards, when connecting SELV AND voltages which are greater than SELV (30VAC or 60VDC) together, then Relay Output 2 must NOT be used in order to provide sufficient isolation between the outputs 905U-L Wireless I/O Version 1.9 Page 24 of 40 905U-L Wireless I/O Installation Manual Status outputs The unit contains the following status outputs:

System OK;

Setpoint Output; and Communications Failure. Status outputs are FET output to common rated at 30VDC 500 mA. Connect the output circuit to the appropriate Status Output terminal. Each status output circuit is associated with an LED indicator that lights lit when the digital output is active. The following table details the status output behavior:

Status output LED LED Description System OK active (both modules) System OK inactive OK OK status Green No fault detected Red Internal fault detected. Supply voltage Low Analog Loop supply overloaded Setpoint Output (905U-L-T) SP Green Communications Failure (905U-L-R) CF Red Local setpoint attached to 4-20mA analog input. Watchdog alarms active on digital outputs or analog outputs. 905U-L Wireless I/O Version 1.9 Page 25 of 40 Analog input 905U-L Wireless I/O Installation Manual The 905U-L-T module provides one 0 - 20 mA DC analog input for connecting to instrument transducers (e.g. level, moisture, pressure transducers, etc.). Note The 905U-L-T module inputs measure down to 0mA and can also be used for zero based signals (e.g. 0 - 10 mA). The analog input has a positive and negative terminal and can be placed at any point in the current loop, providing neither input rises above the 24 volt Analog Loop Supply level. Each input has a loop resistance of less than 250 ohms and zener diode protection is provided against over-voltage and reverse voltage. Note You may require additional protection in high voltage or noisy environments or for long wiring runs. A 24VDC loop supply is available on the 905U-L-T module for powering the analog transducer loops. In this situation, connect the:

Analog loop - between an Analog Input (-) terminal and Ground. Positive terminal i.e. Analog Input (+) to the +24V Analog Loop Supply. Externally powered loops may be connected by connecting the input between "Analog Input (+)" and Analog Input (-) Common mode voltage may be -0.5V to 27V. ELPRO recommends using shielded cable for analog I/O loops to minimize induced noise and Radio Frequency Interference (RFI). Note You should only connect one end of the cable shield to Earth To connect an analog signal from a PLC or DCS output to an analog input on the 905U-L-

T, you must carefully check the internal circuit of the output as different devices use different ways to create an analog signal. 905U-L Wireless I/O Version 1.9 Page 26 of 40 905U-L Wireless I/O Installation Manual The following diagrams illustrate different connection methods:

Example Analog signal source 2 wire transducer 4 wire transducer Current source output 905U-L Wireless I/O Version 1.9 Page 27 of 40 Example Analog signal source Current sink output 905U-L Wireless I/O Installation Manual 905U-L Wireless I/O Version 1.9 Page 28 of 40 Thermocouple input 905U-L Wireless I/O Installation Manual The 905U-L-T provides one input suitable for connection to a thermocouple or a millivolt level signal. The module provides linearization tables for J, K and T type thermocouples and also supports other types via a user linearization table. Millivolt signals in the range -10mV to +100 mV are supported. For more information on configuring the thermocouple input and cold-junction compensation to suit your application, refer to the User Manual. 905U-L Wireless I/O Version 1.9 Page 29 of 40 Pulse input 905U-L Wireless I/O Installation Manual The 905U-L-T module lets you configure the digital inputs as pulse inputs with the following characteristics:

Characteristic Maximum rate Value 10 Hz Minimum off time 20 mSec Minimum on time 20 mSec Using this mode, you can map the pulse count to a remote output by transmitting the pulse count to a 905U-G module register or re-generating as a Pulse Output on 905U-1 or Digital Output on a 905-3 unit. Note You should connect the pulse input in the same way as a digital input. The following diagrams illustrate different connection methods:

Example Connection method Passive transistor Active pulse device 905U-L Wireless I/O Version 1.9 Page 30 of 40 Analog output 905U-L Wireless I/O Installation Manual The 905U-L-R module provides a 4 - 20 mA DC analog output for connecting to instrument indicators to display remote analog measurements. The analog output is a current source provided from an internally generated +24V loop supply. When connecting to an external device (e.g. electronic indicator, recorder, PLC / DCS input, etc.) by connecting the output between the Analog Output terminal (+) and the COM terminal (-). Note Zener protection of analog outputs provides protection against short periods of over-

voltage; however longer periods may result in module damage. You can also individually configure analog outputs to turn off (i.e. 0 mA) if no command message is received to the output for a certain period. The following diagrams illustrate different connection methods:

Connection method Example Loop powered device Floating input device 905U-L Wireless I/O Version 1.9 Page 31 of 40 Example Connection method To single-

ended input device 905U-L Wireless I/O Installation Manual 905U-L Wireless I/O Version 1.9 Page 32 of 40 905U-L Wireless I/O Installation Manual Installing and configuring the unit This section describes how to install and configure your unit and contains the following sections:

Section Description For more information, see Installing the unit Describes how to physically install your unit. Installing the unit on page 34. Configuring your unit Describes the different ways to configure your unit. Configuring your units on page 35. Testing your unit Describes ELPROs recommendations for testing your unit. Testing your units on page 36. For more information, see the next sections. 905U-L Wireless I/O Version 1.9 Page 33 of 40 905U-L Wireless I/O Installation Manual Installing the unit To install the unit:

1. Connect signals to the supplied terminals. 2. Connect the radio antenna. 3. Install DIN rail to mount the module. 4. Clip the module to the DIN rail:

You can now configure your unit. For more information, see page 35. 905U-L Wireless I/O Version 1.9 Page 34 of 40 Configuring your units You can configure your network using:

905U-L Wireless I/O Installation Manual Default factory configuration that lets you easily setup your network as a simple send/receive; or User-defined customized configuration that lets you set specific information about your network and allows communication with other ELPRO 905 series devices. For more information on setting a user-defined customised configuration, see the User Manual. For more information on setting the factory default configuration, refer to the Quick Start Guide included with your module. The following table details the factory default configuration:

Signals sent over radio 905U-L-T(Transmitter) Sends 905U-L-R (Receiver) Digital Input 1 Digital Input 2 Analog Setpoint Analog input (4-20 mA) Other signals Digital Output 1 Digital Output 2 Digital Output 3 Analog output 905U-L-T(Transmitter) 905U-L-R (Receiver) Thermocouple Input (Not used) Setpoint Output (Local indication) System OK (On if system OK) Communication Failure

(Comes on if no messages from 905U-LT) System OK

(On if system OK) 905U-L Wireless I/O Version 1.9 Page 35 of 40 Testing your units 905U-L Wireless I/O Installation Manual We recommend you bench test the complete system before installing a new system. Configuration problems are easier to identify and fix when the units are next to each other. The following table describes common problems and recommended solutions:

If your installation has You should check ELPRO recommends Poor radio channel communications The antenna installation. For radio interference on the TX LED flashes but no RX same channel. Higher performance antennas if the path is too long. Higher mounting points to LED The radio path is adequate. overcome obstructions. Output LEDs flash quickly Using an intermediate unit as a repeater. Red OK LED Power Supply voltage Supply should be between 9 and Analog loop supply current The analog loop supply is rated for 35 mA max. Module configuration Your module configuration may 30VDC. be invalid. Re-load or restore factory default configuration. TX LED flashes but no RX LED (bench testing) Ensure the 905U-L-R is set to Register the receiver with the the same country and transmitter. (Refer to the Quick frequency band as the 905U-L-

Start Guide) T RX LED Flashes but no outputs change For a user-defined customized Check the configuration and re-

configuration, - check the program the modules. configuration. For default configuration, check the receiver is registered with Repeat the procedure to register the receiver with the transmitter. the transmitter. For support for other testing issues, please contact ELPRO. 905U-L Wireless I/O Version 1.9 Page 36 of 40 905U-L Wireless I/O Installation Manual Unit specifications This section details the specifications for each unit. Transmitter unit Input/output Number Additional information Digital inputs 2 Status outputs Analog inputs Thermocouple inputs 2 1 1 Power supply 1 Dry-contact digital inputs slow-pulsed at 10Hz. All inputs are suitable for voltage free contacts (e.g. mechanical switches) or NPN transistor devices (e.g. electronic proximity switches). NOTE: PNP transistor device inputs are NOT suitable. Separate System OK and Setpoint Status 0-20mA differential input; 16-bit resolution, 0.1% accuracy, 10 ohm input impedance. J, K or T type thermocouple with on-board cold-junction compensation. Cold junction compensation accuracy 1 over ambient temp range: -40 to +70C. 9-30 VDC 0.6 Amp CSA certified Class 2 power supply. For use in Class 1 Div 2 explosive areas, the power supply must be approved for Class 1 Div 2 use. WARNING: Explosion hazard - do not disconnect while circuit is live unless area is known to be non-hazardous. Transmitter 1 1-Watt Frequency Hopping Spread Spectrum (FHSS) Transmitter. Frequency 902-928 MHz Actual frequency range depends on country. Receiver unit Input/output Number Additional information Digital outputs 3 Voltage-free contacts rated at 250 VAC, 1A, 30VDC 1A Status outputs Analog output Power supply 2 1 1 2 for digital inputs and 1 for setpoint. Separate System OK and communication failure output. 16-bit resolution, 0.1% accuracy, single-ended source output. 9-30 VDC 0.25 Amp CSA certified Class 2 power supply. For use in Class 1 Div 2 explosive areas, the power supply must be approved for Class 1 Div 2 use. WARNING: Explosion hazard - do not disconnect while circuit is live unless area is known to be non-hazardous. Radio receiver 1 High sensitivity FHSS UHF radio receiver. Frequency 902-928 MHz Actual frequency range depends on country. Sensitivity

-110 dBm At BER 8%. 905U-L Wireless I/O Version 1.9 Page 37 of 40 905U-L Wireless I/O Installation Manual Ancillary hardware reference information This section contains reference information about additional hardware components you may need for your unit. RS232 serial cable You can connect the unit to a PC using an RS-232 serial cable to:

Transfer configuration information;

Perform factory and field-testing. The serial port is an 8 pin RJ-45 plug that communicates using standard RS-232 signals:

Signal information Value Baud rate 9600 Bits Parity 8 bits with 1 stop bit No parity ELPRO can supply a configuration cable. Note The following pin-out information is for reference only. RJ-45 Required Signal name Normal colour DB9 1 2 3 4 5 6 7 8 Y Y Y Y Ring Indicator Green / White Data Carrier Detect Green Data Terminal Ready Orange / White Signal Common Blue Receive Data (from Modem) Blue / White Transmit Data (to Modem) Orange Clear to Send Brown / White Request to Send Brown 9 1 4 5 2 3 8 7 905U-L Wireless I/O Version 1.9 Page 38 of 40 Index 905U-L Wireless I/O Installation Manual 2 wire transducer ..................................................... 27 lightening rod ........................................................... 16 4 wire transducer .................................................... 27 lightening strike ........................................................ 16 AC relays ................................................................. 24 line of sight .............................................................. 15 active pulse device ................................................. See linearization tables ................................................... 29 active signal device ................................................. 23 loop powered device ................................................ 31 analog input ............................................................. 26 maximum transmission distance .............................. 15 analog output ........................................................... 31 mechanical switches ................................................ 23 antennas .................................................................. 17 millivolt signal .......................................................... 29 compatible cables ............................................... 13 net gain .................................................................... 14 dipole .................................................................. 17 obstructions ............................................................. 15 installing .............................................................. 15 intermediate ........................................................ 15 polarization .......................................................... 19 over-voltage ............................................................. 26 supported antennas ............................................ 13 passive transistor ..................................................... 30 arcing ....................................................................... 24 pin-out...................................................................... 38 bench testing ........................................................... 36 PLC ......................................................................... 26 cable polarization .............................................................. 19 loss ...................................................................... 14 polarized .................................................................. 19 cables power supply ........................................................... 21 for antennas ........................................................ 13 installing .............................................................. 21 supported cables ................................................. 13 problems .................................................................. 36 CFD890EL ............................................................... 13 pulse input ............................................................... 30 coaxial surge diverter .............................................. 16 PVC tape ................................................................. 16 configuration Radio Frequency Interference ................................. 26 default factory ...................................................... 35 receiver user-defined customized ..................................... 35 components ......................................................... 11 configuring ............................................................... 35 front panel ........................................................... 12 connections LEDs ................................................................... 12 taping .................................................................. 16 terminal connections ........................................... 11 current sink output ................................................... 28 relay outputs ............................................................ 24 current source output ............................................... 27 reliable path ............................................................. 15 DC relays ................................................................. 24 repeater ................................................................... 15 DCS ......................................................................... 26 reverse voltage ........................................................ 26 digital inputs............................................................. 23 RFI ........................................................................... 26 DIN rail .................................................................... 34 RJ-45 ....................................................................... 38 dipole antennas ....................................................... 17 rotary switch ............................................................ 10 electronic proximity switches ................................... 23 changing position ................................................ 10 explosive areas ........................................................ 21 setpoint levels ..................................................... 10 floating input device ................................................. 31 RS-232 .................................................................... 38 flyback diodes .......................................................... 24 serial cable .............................................................. 38 gain setpoint net gain ............................................................... 14 thermocouple ...................................................... 22 horizontal polarization .............................................. 19 setpoint levels .......................................................... 10 installing .................................................................. 34 SG900-6 .................................................................. 13 instrument transducers ............................................ 26 SG900EL ................................................................. 13 interference.............................................................. 15 shielding .................................................................. 16 internal surge protection .......................................... 21 signals ..................................................................... 35 LEDs single-ended input device ........................................ 32 receiver ............................................................... 12 SMA connector ........................................................ 16 transmitter ........................................................... 10 solutions .................................................................. 36 905U-L Wireless I/O Version 1.9 Page 39 of 40 905U-L Wireless I/O Installation Manual specifications ........................................................... 37 transmitter status outputs .......................................................... 25 components ........................................................... 9 surge diverter........................................................... 16 front panel ........................................................... 10 surge protection ....................................................... 16 terminal connections ............................................. 9 surge suppression ................................................... 16 UV-stabilized tape ................................................... 16 switches vertical polarization .................................................. 19 electronic proximity ............................................. 23 voltage free contact ................................................. 23 switches vulcanising tape ....................................................... 16 mechanical .......................................................... 23 watchdog alarm ....................................................... 24 taping connections ................................................... 16 WH900..................................................................... 13 testing ...................................................................... 36 YU16/900................................................................. 13 thermocouple ........................................................... 29 YU6/900................................................................... 13 thermocouple setpoint ............................................. 22 zener diode protection ............................................. 26 transducers .............................................................. 26 zero based signals ................................................... 26 905U-L Wireless I/O Version 1.9 Page 40 of 40