Cooper Bussmann BU-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

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.

Status Outputs

2

Separate System OK and Setpoint Status

Analog Inputs

1

0-20mA differential input; 16-bit resolution, 0.1% accuracy, 10 ohm input impedance.

Thermocouple Inputs

1

J, K or T Type thermocouple with on-board cold-junction compensation.

 

 

Cold junction compensation accuracy ±1º over ambient temp range: -40º to +70ºC.

Power Supply

1

9-30Vdc 0.6 Amp CSA certified Class 2 power supply. For use in Class I Div 2 hazardous

 

 

locations, 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 250Vac, 1A, 30Vdc 1A 2 for digital inputs and 1 for setpoint.

Status outputs

2

Separate System OK and communication failure output.

Analog output

1

16-bit resolution, 0.1% accuracy, single-ended source output.

Power supply

1

9-30Vdc 0.25 Amp CSA certified Class 2 power supply. For use in Class I Div 2 Hazardous

 

 

locations, 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 PER 8%.

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Cooper Bussmann BU-905U-L installation manual Transmitter Unit, Receiver Unit, Unit Specifications

BU-905U-L specifications

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