I have the problem not knowing what stops our mixer (is it due to a starter fault or in the mixer control circuit). When the mixer stops all power is removed for the soft start controls so power is lost to the control/fault circuit. The starter does not appear to have a battery backup on the alarm circuit or a battery PCB connected.
Is there an easy way to fit a fault lamp or be able to obtain battery backup cards?
Another method maybe to connect a relay to the normally open fault contact and this may make contact long enough to latch. Is the normally open fault output a clean contact and at what voltage is it rated at?
The EMS control is fed from the load side of the line contactor so when a trip occurs the line contactor opens and hence you loose control power,what I have done in the past is to change the control feed from the load side of the contactor to the line side so that a trip will open the contactor but keep control power on.