APC715 Pump Unit Controller
APC715 Pump Unit Controller ISSUE 2013-08-28 Version 1.0 Page 17 of 62
sequence will be terminated, the Fail to Start fault will be displayed on LCD.
5. In case of successful crank attempt, the “Safety On” timer is activated, allowing Low
Oil Pressure, High Temperature, Under speed and Charge Alternator Failure inputs
to stabilize without triggering the fault. As soon as this delay is over, “start idle” delay
is initiated (if configured).
6. During “start idle” delay, under speed alarm is inhibited. When this delay is over,
“warming up” delay is initiated (if configured).
7. After the “warming up” delay, If engine speed has reached on-load requirements,
then the pump close relay will be energized; pump uint will take load; pump unit will
enter into Normal Running status.
NOTE: In case of “Remote Start (off Load)”, the procedure is the same, except for
step NO. 7: the pump close relay will NOT be energised, generator will NOT accept load.
Automatic Stop Sequence,
1) When the “Remote Start” signal is deactivated while the “Remote Stop” signal is
active, the Stop Delay is initiated.
2) Once this “stop delay” has expired, the Pump Unit Breaker will open and the “Cooling
Delay” is then initiated. Should the Remote Start signal be re-activated during the
cooling down period, the unit will return running status. Once the “Cooling Delay”
expires, the “Stop Idle” delay is initiated.
3) During “Stop Idle” Delay (if configured), idle relay is energized.
4) “ETS Solenoid Hold” begins, ETS relay is energized while fuel relay is
de-energized and complete stop is detected automatically
5) "Fail to Stop Delay" begins, complete stop is detected automatically.
6) Pump unit is placed into its “After stop time” after its complete stop. Otherwise, fail
to stop alarm is initiated and the corresponding alarm information is displayed on
LCD (If pump unit stopped successfully after “Failed to Stop” alarm, it will enter
“After stop time” and remove alarm).
7) Pump unit is placed into its standby mode after its “After stop time”.
4.5 MANUAL START/STOP OPERATION
1 Manual Start: Manual mode is selected by pressing the button; a LED
besides the button will illuminate to confirm the operation; then press
button to start the unit; can automatically detect crank successful, and unit
accelerates to high-speed running automatically.
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