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YOKOGAWA

Yokogawa Corporation of America

North & Central America

905U-L Industrial Wireless I/O

The 905U-L is powerful, flexible and easy to use.

  • Small I/O capability - use where a simple one-way link is required 
    Unidirectional, one way communications
  • Transmitter and receiver units factory-configured as a matching pair, or user-configurable as part of a larger wireless I/O network
  • Secure data encryption

Powerful, flexible, easy to use

  • Small I/O capability - use where a simple one-way link is required Unidirectional, one way communications
  • Transmitter and receiver units factory-configured as a matching pair, or user-configurable as part of a larger wireless I/O network
  • Secure data enryption
  • WIB-net intelligent wireless protocol, peer-to-peer communications, immediate exception reporting plus configurable high-scan updates, multi-hop mesh repeater
  • Up to 3000 wireless units per network
  • Power supply 9 – 30VDC, 24VDC analog loop supply internally generated
  • RS232 Configuration and diagnostics port
  • Compatible with the 905U Wireless I/O and Wireless Gateway family
  • Class 1 Div 2 hazardous areas approval

950U-L transmitter unit

  • Powerful 900MHz frequency-hopping 1W transmitter
  • External inputs – two digital/pulse inputs, one analog input (0-20mA, 4-20mA), and one thermocouple mV input
  • Internally calculated values – analog and thermocouple setpoint status, pulse count, power supply voltage
  • Thermocouple input –20 to +100mV with cold-junction compensation and linearization for J, K , T or E-type
  • Local output for setpoint status: generated by comparing analog input to high and low setpoints.
  • RS232 Configuration and diagnostics port

950U-L receiver unit

  • Three digital contact outputs and one analog output (0-20mA, 4-20mA)
  • Communications failure indication and configurable output
  • Outputs can be configured as retained or reset (fail-safe) on communications failure
  • LED indication of radio signal strength

Different Models
905U-L-T Input Transmitter unit 905U-L-R Output Receiver unit

Standards Compliance
Radio: EN 300 220, Part 15.247, RSS-210, AS4295, AS4768.1 v compliant 89/336 EEC, AS3548, FCC Part 15, EN301489 Hazardous rating: Class 1 Div 2 (USA/Canada) Electrical: EN60950

General Specifications
Environmental Housing -40 to 60oC / -40 to 140oF, 0–99% RH (non-condensing) DIN-rail thermo-plastic enclosure. 100 x 22 x 120 mm / 3.9 x 0.9 x 4.7 inches.

SMA connector for antenna or coaxial cable connection. Power Supply 9 – 30 VDC. Power consumption @12VDC – Receiver 100mA. Transmitter 40mA quiescent, during radio transmission (30 msec) 300mA. Periodically scans AI to save power Analog loop supply internally generated, 24VDC 30mA Internal monitoring of supply voltage – may be transmitted as an "input" (Transmitter unit only) Hazardous rating: Class 1 Div 2 (USA/Canada) pending

Transmitter Inputs
Digital/Pulse Input, two inputs, suitable for voltage free contacts / NPN, or voltage input 0-1 VDC on / >3 VDC off Pulse input max rate 10 Hz, 50 msec on time, pulse input counted as 2 x 16 bit register.
Analog input, 0-20 mA, 4-20mA, span and zero configurable (default 4-20mA), "floating" differential input, resolution 16 bit, accuracy < 0.1 %
Thermocouple input
, -20mV to +100mV, J, K or T type linearization with on-board cold-junction compensation, accuracy better than 1°C
Analog & thermocouple setpoint status, setpoint status sets (on) when input value < low setpoint and resets (off) when input value > high setpoint, status transmitted as per digital input, setpoint values are settable via frontpanel rotary switch or configuration software.

Receiver Outputs
Digital Output, three relay contact outputs, 260VAC, 1A rating Analog Output, 0-20mA, 4-20mA, configurable span and zero (default 4-20mA), source output, 12-bit resolution, 0.1% accuracy. Comms-Fail, internal status based on configurable time-out value. Commsfail output. ok output, FET, 30VDC, 500mA Fail-safe, on "comms-fail", outputs user-configurable as retained (last correct value) or reset (fail-safe)

 

 

 

Wireless
Frequency hopping spread spectrum 902-928MHz, sub-bands available, 1W Approved to FCC Part 15.247, RS210 Line of sight range 20 miles (4W ERP), 15km (1W ERP); 3000 ft / 1000 m in obstructed industrial environments Radio distances can be increased by up to 5 intermediate repeater units

Each transmission may be configured to be sent 1 to 5 times

Communications
WIB-net wireless protocol, enabling peer-to-peer communications. Input values are transmitted on immediate change plus timed updates (maximum rate 5 times per second). Wireless messages are data encrypted for security protection.

Serial Port
RS232 RJ45 female DCE, used for configuration and diagnostics

LED Indication
Transmitter unit:
Power/OK, Radio TX, DIN1, DIN2, Analog Setpoint status Receiver unit:
Power/OK, Radio RX, DO1, DO2, DO3, Communications fail
LED's also used to provide radio signal strength indication

Configuration and Diagnostics
Factory configuration transmitter/receiver matched pair. User configuration via serial port. Unidirectional units can be configured to network with Multi-I/O and Gateway units. Diagnostics features – read input values, write output values, radio signal strength, monitor

Specifications subject to change without notice

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