Onicon System-30 MODBUS BTU Manual de usuario descargar pdf (Pagina 16)

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System-30 BTU Measurement System MODBUS RTU RS485 04/14 - 0583-1 / 18345 Page 16

3.3.2 Electrical Wiring

Connect all Btu meter signal outputs to terminal strip TB1 and/or TB4 (optional

communication output) as shown below. Then connect the 24 V AC/DC input power to

terminal strip TB1. The standard SYSTEM-30 is congured for 24 V AC 50/60 Hz

operation or 24 V DC operation. Do not connect the 24 V AC/DC source until all other

signal connections have been made and veried.

CAUTION

Only qualied service personnel should make connections between the System-30-MOD BTU

Meter and the user’s external equipment. ONICON assumes no responsibility for damaged caused

tot he external equipment as a result of an improper installation.

TB1

TB4

Btu Mode 1Contact

Btu Mode 2 Contact

}

24V AC/DC

}

Analog Output

}

RS485

}

Aux Pulse Input

RS485 Common

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Onicon System-30 MODBUS BTU Manual de usuario Pagina 16