Sigma Controls Myriad TPC LITE Instruction Manual page 23

23
NOTES ON ALARMS
General alarm output 'sweeps' all alarms into a common SPDT dry contact output.
PUMP ALARMS
(1) Pump fail, after a pump has been 'called' to run a digital input (normally from the auxiliary
contact on the respective motor starter) or normally closed inputs (from the pump motor
thermostat or VFD fault output) is 'fed back' to the controller at 1DI, 2DI, and 3DI. If the
controller fails to see this input it assumes the motor starter has failed to energize the starter
and it energizes the 'Pump Failure' alarm, removes this pump from the sequence, and brings on
the next available pump. NOTE: If these inputs are not used they should be 'jumpered'
(2) Seal leak, all seal leak inputs are connected to a single digital input 3AI. When either of
these are closed the non-critical alarm is activated. The pumps are not shut down.
(3) H.O.A. selectors, are monitored for their position at 4DI, 1AI, and 2AI. If an HOA is not in the
'Auto' position that pump will not be permitted to run. NOTE: If these inputs are not used they
should be 'jumpered'