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Sensaphone
®
ISACC Instruction Manual
To wire the 4-module rack logic I/O to ISACC:
1. Insert solid state modules into the 4-module rack.
2. Mount the rack in the ISACC enclosure so that it is parallel to the
ISACC circuit board, with the LED side closest to the circuit board. The
LED side is called the logic I/O and is wired to ISACC. The other side is
called the field I/O and is wired to the AC and DC devices.
3. Wire terminal 1 on the rack to 5 VDC on the ISACC digital output
terminal block. Attach terminal 2 to one of the C (common) terminals on
the ISACC digital output terminal block.
4. Connect an odd-numbered terminal (3, 5, 7, or 9) on the rack to a
digital output terminal (1-8) on ISACC.
To wire the 4-module rack field I/O to DC devices using an ISACC power supply:
1. Connect ground from the DC device to a common on ISACC's power
supply terminal block.
2. Connect an even-numbered terminal on the 4-module rack to a power
terminal (20V, 15V, 12V, or 5V) on ISACC's power supply terminal block.
3. Connect the positive terminal from the DC device to the odd-num-
bered terminal (2, 4, 6, or 8) on the rack.
4. If you use more than one DC module, you may wire the even-num-
bered terminals on the rack together (if they require the same voltage) to
supply power, and the ground terminals on the DC devices together to
ground.
To wire the 4-module rack field I/O to AC devices using an external power supply:
1. Wire the HOT terminal from the external power supply to an odd-
numbered terminal on the 4-module rack.
2. Wire the NEUTRAL terminal from the external power supply to a
terminal on the AC device.
3. Wire the other terminal on the AC device to an even-numbered termi-
nal on the 4-module rack.
4. When using more than one AC module, you may wire the odd num-
bered-terminals on the rack together, and the neutral terminals on the AC
devices together.
See diagram on next page.
NOTE: If you are using the ABS plastic enclosure, any external wiring must go
through the strain relief clamps in the wall of the enclosure. Replace the top
cover after installation. Terminal 1 on the field I/O side of the 4-module rack is
unused.