beautypg.com

2 4v ac/dc, Analo g o utput, Rs485 – ONICON System-30 MODBUS BTU User Manual

Page 16: Aux pul se input

background image

11451 South Belcher Road, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
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 configured 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 verified.

CAUTION

Only qualified 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.

!

1 2 3 4 5

1 2 3 4 5 6 7 8

TB1

TB4

+ -

B

tu Mode

1C

on

tact

B

tu Mode

2 C

ontact

}

}

}2

4V AC/DC

+ -

}Analo

g O

utput

+ -

}RS485

+ -

}Aux Pul

se Input

RS4

85

Comm

on

This manual is related to the following products: