Delcos 3100 Wiring Diagram [better] -

The Delcos 3100 controller acts as the "brain" of the compressor, and its wiring is designed to support several critical functions:

Let’s walk through a typical example. Imagine you have a for a conveyor control system. The conveyor has two photo-eyes and one motor starter.

For SR versions, always disconnect the power supply and wait at least 12 minutes

DELCOS 3100 Controller Manual | PDF | Energy Conservation - Scribd

: These must be configured manually as they often have no default function. Typical setups include setting REL-4 for "Motor Running" and REL-5 for "Operating".