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Method Two
The second method to wire the SB600RI for traffic light control is with a switched voltage
source. For this method, refer to Figure No. 19 and the following steps:
NOTE: The traffic light control input will allow anywhere from 5V to 120V AC or DC for input.
1. For single relay control, the switched voltage should be wired into the "IN 1" terminal of
the control board.
2. The ground or common should be wired to the "COM" terminal on the controller board.
3. If a second input is needed for "RELAY 1 AND 2" mode, wire the second switched
voltage into the "IN 2" terminal of the control board.
4. DO NOT connect any wires to the "5V SWITCH SUPPLY" in Method Two or you may
damage the SB600RI controller board.
Cardinal Scale Mfg. Co. recommends that the cable length for all configurations of
the traffic light control be kept under 300 feet (91 meters).
NOTE: The traffic light control cable should be 24 AWG wire (minimum) rated at the
traffic light control input voltage being used, (5V AC or DC) up to (120V AC or DC).
SB600RI (REMOTE INPUT), CONT.
3601-0756-0M Rev D • SB600
Figure No. 19
Switched Voltage for
Second Relay Input 2
Switched Voltage for
Single Relay Input 1
Do Not connect
any wires to 5V
SWITCH SUPPLY
31
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