I am trying to use the ATS (automatic transfer switch) interface of a generator to set up a remote start system using a microcontroller with a cell phone modem and relay bank (for a rural microgrid application in India).
The ATS interface connection is shown below:
In the circuit diagram, the five pins are labeled as follows. Based on the labels I'm inferring inputs vs outputs, and guessing at what GC and MC stand for.
INPUT? 1. Auto start switch OUTPUT? 2. GC relay generator contacter? 3. MC relay mains contacter? 4. BAT+ 12V lead acid battery 5. BAT-
Can I use this interface to start the generator? If so, how, and what is each pin for? Also, what is this type of connection called, so I can order the appropriate cable?
The manual for the generator does not include any detail. However, it's my understanding that the 12V+/- supply power to the ATS, GC and MC are to allow the genset to drive contacters, and the auto start switch should short to ground to start the generator, then open circuit to stop it. Is this correct?