Photocell; Wiring Schematic For Photocell Cable, P/N 902-10185; Acquisition Unit Photocell Connector Pinouts - Honeywell VXP System Maintenance Manual

If there is no apparent damage to the cable, but the equipment does not function properly, refer to
the troubleshooting guide. In some instances, the cables must be tested using an ohmmeter or
multimeter. You should run the following tests on the cables:
1. Ensure that all conductors, including shields, have end-to-end continuity.
2. Ensure that no shorts (false continuity) are present.
Use the schematics in the following pages for both types of tests. In addition to the wiring
diagrams shown for each cable, a table showing the pinouts is also provided.

5.2.1 Photocell

Table 5-2 shows the signals coming out of the Acquisition Unit for each photocell connector on
the Unit. Figure 5-2 shows the photocell cable wiring schematic.
Table 5-2. Acquisition Unit Photocell Connector Pinouts
Pin # Function
A High-Speed Photocell Signal In
B Ground
C Drive Signal
D Sensor Power
Figure 5-2. Wiring Schematic for Photocell Cable, P/N 902-10185
Repair and Cleaning
Attributes
0.2 to 10 Vac
Ground
10 Vac
+12 Vdc
VXP System Maintenance Manual 5-3