Sun Pumps PCC-48BLS-M2 - Manual (Page 8)

Figure 2 Battery Voltage Regulation
State
Voltage Behavior
Over Charge > 64 V Controller will not attempt to start pump when more than 64 volts is
seen on the input terminals. Less than 64 V on the input will reset this
fault. If the pump is running when the input goes to 64 V, the pump
will immediately be shut down.
Nominal Operating
Range 49 V – 64 V Controller will start and run the pump according to the position of the
on/off switch, remote switch, and low water cutoff inputs. It takes 30
seconds in this range or cycling the on/off switch while the input is in
this range to allow the controller to attempt to start the pump.
Pump Start
Threshold 49 V Minimum voltage for the controller to start the pump. Input voltages
less than this for 45 seconds or more will cause the controller to protect
the batteries from excessive discharging.
Pump Run
Hysteresis 47 V – 49 V If the pump is running and the voltage drops into this range, the pump
will continue to run. If the controller shuts down the pump for any
reason, the voltage will have to attain 49 V for 30 seconds to start the
pump again.
Pump Run
Threshold 47 V Minimum voltage for the pump to run. Voltages lower than this for 45
seconds will turn the pump off. Pump will not start until 30 seconds of
input voltage above 49 V has been achieved or the on/off switch is
cycled while the voltage is above the Pump Start Threshold.
Dead Battery 44 V Pump will immediately shut down and will stay off until 30 seconds of
49 V or more is attained on the input to the controller or the on/off
switch is cycled while 49 V – 64 V is applied to the input terminals.
*Note: At any time cycling the on/off switch will reset all faults, timers and status and bypassing the timer,
establish the current state immediately.