I recall using a pair of them in a wetwell level control system about 1987.
were configured for proportional only, one for one pump VFD control and the
other for two pump VFD control. The rest of the 61 relay, 7 timer, 16
trip control panel was equally clunky. The Engineer literally did not want
of them newfangled PLC gadgets.
Seriously, instead of matching the capability of the old controller, figure
what capabilities are required by the process then pick a controller to
Do you have any records of the programming in the controller? That will
tell you what you really need for a replacement. Despite the physical size,
I don't think the Electromax V offered more than single-loop / two-loop /
cascade control with the usual current / voltage / RTD / TC inputs and
current / relay outputs.
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