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

	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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