Andover Controls SCX 920 - Setting the Override Switches; Figure 13. Wiring Diagram for Form C Outputs

Hardware Installation
26 SCX 920 Installation Guide
You wire the outputs for Form C as follows:
1. Slip the appropriate wire under the NC screw and tighten the screw
down on it.
2. Slip the appropriate wire under the C screw and tighten the screw
down on it.
3. Slip the appropriate wire under the NO screw and tighten the screw
down on it.
4. When switching inductive loads (relays, contactors, motors, or
valves), be sure to install metal oxide varistors across the coil of the
device being switched.
Figure 13 shows the schematic for wiring a Form C output.
Figure 13. Wiring Diagram for Form C Outputs
Setting the Override Switches
The eight five-position override rotary switches let you either manually
control each output or set it to AUTO so the controller can control it.
Figure 14 shows a close-up of a single override rotary switch and how
the settings change for voltage, current, or Form C.
NC
NO
C
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