Optically Isolated Remote Inputs; Ac Input Relay Board(S) - Cardinal 225 Installation And Technical Manual

Optically Isolated Remote Inputs

Included with the I/O are 7 programmable inputs that may be used to remotely (up to 100 feet)
initiate various functions within the indicator. These inputs are accessed via a terminal block
(P17) on the back of the PC board (see Figure No. 11). The 7 inputs are defined as follows:
PIN NO.
U U
1 + SRC(12 to 24VDC)
2
3
4
5
Remember that the input must be connected to GND to initiate the function.

AC Input Relay Board(s)

The AC Input Relay Board(s) are mounted in an external junction box for use with the 225
Indicator. The RB4-ACIN (115 VAC) or RB4-ACINV (230 VAC) contain one board and
supports 4 inputs (jumper selectable). The RB8-ACIN (115 VAC) or RB8-ACINV (230 VAC)
contain two boards and supports 7 inputs that are jumper selectable. The relay board used in
the 115 VAC versions is Cardinal p/n 8200-C324-0A. The 230 VAC version uses relay board
Cardinal p/n 8200-C324-1A. Connect the devices as shown in Figure No. 8.
INPUT RELAY TYPE IAC-5
INPUT RELAY TYPE IAC-5A
OUTPUT
CONNECTION
8200-M538-O1 225 Installation
INSTALLATION, CONT.
REMOTE INPUTS TERMINAL – (P17)
Function
U U
ZERO
TARE
G/N (Gross/Net)
PRINT
90 to 140 VAC @ 6mA maximum for each plug-in relay
180 to 280 VAC @ 6mA maximum for each plug-in relay
5VDC @ 12mA from the 225 main pc board assembly P9
12VDC @ 12mA maximum from external source
Removable plug-in screw terminals for up to 14 AWG wire
PIN NO.
U U
6 - - - - (Not Used)
7
8
9
10 GND/SHIELD
Function
U U
STOP
START
DUMP
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