Figure 1 shows the wiring diagram for a three-phase motor and its corresponding three-wire control circuit, where the auxiliary contacts of the starter seal the start push button. To convert this circuit into a PLC program, first determine which control devices will be part of the PLC I/O ...
1. Basic control circuit for DOL (direct-on-line) starter Figure 1(a) shows a typical circuit for aDOL starter for a three-phase motor. A full-line voltage is applied across the windings with this starter. The rating of motors which can be started direct-on-line depends...
This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack which is Part 68 compliant. See the Starter W Guide for details. h a The Ringer Equivalence Number (REN) is used to determine the number of devices t C a that may be ...