Electrical Relay Function

The Anatomy Of A Relay
The Anatomy of a Relay . The very first programmable logic controllers were designed to replace relays.  PLCs have changed a lot since then, but as an artifact of time some of the terms used in PLC programming still relate to relays, namely a "coil" www.plcdev.com
Pagoda Sl Group Technical Manual    Electrical   Relays
Pagoda SL Group Technical Manual . Electrical / Relays

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