HEM4000 Engine Controller User Manual Page 14 of 46
electronic speed controller, and then set the stepping coefficient of GOV speed adjustment.
Press
and the speed adjustment screen shall be as below. When the engine is in normal
running, the speed can be adjusted. At this moment, press
to raise the speed and press
to
reduce the speed. Press
again to exit and stop speed adjustment.
Fig.2 – Speed Adjustment Screen
NOTE:
Speed can be adjusted up to 110% of rated speed.
5
PUMP UNIT (WITH SUCTION PUMP) APPLICATION OPERATIONS
5.1
D-DRIVEN PUMP START/STOP OPERATION
Set input port function: D-driven pump started, suction pump pressure coming;
Set output port function: D-driven pump starts outputting, D-driven suction pump stops outputting.
Suction pump type: D-driven.
—
D-driven Pump Start:
After auto/manual start mode is active, preheating relay outputs (if configured) and LCD
screen displays “preheating delay XX”. After the preheating delay, D-driven suction pump’s starting
relay outputs (output is to be configured). If the successful starting input (input is to be configured)
is invalid during the “D-driven suction pump’s starting time”, the pump starting relay stops
outputting and enters “pump starting interval”, waiting for next starting; during the set starting
times, if the pump fails to start, the controller will output starting failure alarm and stop, and the
alarm screen displays “pump starting failure alarm shutdown.”;
At any one time of starting, if D-driven pump succeeds, it will enter “waiting for pressure
coming” delay. When the delay is overtime, pressure coming output (input is to be configured) is
invalid and the controller conducts pump fault alarm and stops the pump; Meanwhile, the screen
displays “pump fault alarm shutdown”;
For the time of waiting for pressure coming, if the pressure coming input is active (input is to
be configured), the fuel relay outputs the set pre-start fuel time (default: 1 second). Afterwards the
starting relay outputs. The remaining start process is the same as the automatic start procedure
(for the details please refer to 4.3.1, d)~h));
—
D-driven pump stop: after “safe running delay”, D-driven pump stops outputting (output is to be
configured), and it stops to output after the setting time (ETS time).
Engine Speed
Raise
1500
RPM Drop
Normal Running