The PLC as far as I know did not lose power, it just stop working. After connecting my laptop to the PLC I was surprise the PLC still can communicate and immediately after I get the pause message, using the WinTriLOGIC software I press the Pause Button on the software and after that the plc was responsive but only executed some of the logic not all.
I did not receive any message of memory corruption or else just that the PLC is in User Pause. Once I cut the power and restore the PLC went back to operation normally executing all the logic.
The E10 only drives a two 24 VDC relays, these relays activates the 120 VAC pump contactors. The sump floats activates the input relays based on the level. These are submersible floats, to cancel the turbulence I wire the signal through a time delay relays then to the input relay which activated the PLC input on a separate circuit.
The power supply power the PLC and the relay output. The 24 VDC supply from the PLC connect to each of the relays that activates by floats. When the relays close the input is activated and the PLC starts the pump.
New changes:
I really thought it was a voltage problem or surge caused by the float mechanism using 24VDC from the PLC for simplicity. Now only the PLC output and inputs uses the 24VDC from the Power supply, I wire the float 120VDC to activate the relays independently from the PLC. Now the PLC only uses the 24VDC, the PLC interact with the rest of the device with relays. Floats and contactors, etc. uses the 120VDC directly from the Pump starter box.
Thank you,
Ed