![]() ![]() On-Delay Relay Timer Circuit (NOTC Contact)L1L2S1L1Sequence of operation10 sS1 open, TD de-energized,TD1 open, L1 is off. They are used toactivate or de-activate a device after a preset interval oftime.Timers There are very few industrial control systems that do not need at least one or two timed functions. Programmable Logic ControllersThird Edition
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