7
3. Remove 2" of the outer insulation jacket then remove 1/4" of insulation from each of the
wires (refer to Figure No. 3).
4. Connect each of the wires to the Serial I/O terminal block (P10) referring to Figure No. 7 for
terminal block locations.
5. To terminate, first press down on the release bar for the terminal, insert the wire into the
opening then allow the release bar to return to its original position, locking the wire in place.
Repeat the procedure until all of the wires are in place.
BI-DIRECTIONAL SERIAL INTERFACE SERIAL OUTPUT
PIN NO. Function PIN NO. Function
1 TXD 1 - SRC 8 RXD 1 - RS232
2 TXD 1 - 20 mA + 9 TXD 1 – CTS
3 TXD 1 - 20 mA - 10 GND 1
4 RXD 1 - SRC 11 TXD 2 - 20 mA Active
5 RXD 1 - 20 mA + 12 TXD 2 - RS232
6 RXD 1 - 20 mA - 13 GND 2
7 TXD 1 - RS232
Optically Isolated 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 (P9)
on the back of the PC board (see Figure No. 7). The 7 inputs are defined as follows:
PIN NO.
Function PIN NO. Function
1 + SRC 6 Not Used
2 ZERO 7 STOP
3 TARE 8 START
4 GROSS / NET 9 DUMP
5 PRINT 10 GND / SHIELD
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 220
Indicator. The RB4-IN (115 VAC) or RB4-INV (230 VAC) contain one board and supports 4 inputs
(jumper selectable). The RB8-IN (115 VAC) or RB8-INV (230 VAC) contain two boards and
supports 7 inputs. The relay board used in the 115 VAC version 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. 5.
•
INPUT (IAC-5) ……….. 90 to 140 VAC @ 6mA maximum for each plug-in relay.
• INPUT (IAC-5A) ……... 180 to 280 VAC @ 6mA maximum for each plug-in relay.
• OUTPUT ..…………..... 5VDC @ 12mA from the 220 main pc board assembly P9.
•
CONNECTION ............ Removable plug-in screw terminals for up to 14 AWG wire.
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