
Originally Posted by
gar
171228-2351 EST
sundowner:
The 920 can tolerate sustained latch or unlatch signals. It is not necessary to use pulsed control signals. The 920 automatically turns a sustained input input signal into a pulse of a maximum duration it controls. Thus, it does not require a sustained control signal which would waste power. And/or it allows a way to get high mechanical force internally without high sustained external power. And/or it does not require you to supply a controlled pulse signal to prevent burnout of an internal component.
If the old 925 works the same way, then a SPDT contact in a remote switch can control the 925. This may require large wires if the distance is great. If that is the case, then a single small relay with a SPDT contact can be used as a pilot control. ASCO makes small boards for that purpose as shown in the literature.
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