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7.5 CONDITIONS OF CRANK DISCONNECT SELECTION
No.
0
Gen frequency
1
Speed
2
Speed + Gen frequency
3
Oil pressure
4
Oil pressure + Gen frequency
5
Oil pressure + Speed
6
Oil pressure + Speed + Gen frequency
NOTES:
1) There are 3 conditions to make starter disconnected with engine, that is, speed sensor, generator frequency and
engine oil pressure. They all can be used separately. We recommend that engine oil pressure should be used with speed
sensor and generator frequency together, in order to make the starter motor separated with engine as soon as possible.
2) Speed is the collected signal by magnetic sensor and magnetic sensor is the magnetic equipment installed in starter
for detecting flywheel teeth.
3) When speed is selected, users must ensure that the number of flywheel teeth is the same with setting, otherwise,
"over speed stop" or "under speed stop" may be caused.
4) If genset is without magnetic sensor, please don't select corresponding items, otherwise, "start fail" or "loss speed
signal" may be caused.
5) If genset is without oil pressure sensor, please don't select corresponding items.
6) If speed is not selected in crank disconnect setting, the rotating speed displayed on controller is calculated by
generating signals.
8
PARAMETERS SETTING
CAUTION: Please change the controller parameters when generator is in standby mode only (e. g. Start conditions
selection, configurable input, configurable output, various delay etc.), otherwise, alarming to stop and other abnormal
conditions may happen.
NOTE: Maximum set value must be over minimum set value in case that the condition of too high as well as too low
will happen.
NOTE: When the warning alarm is set, please set the correct return value; otherwise, maybe there is abnormal alarm.
When the maximum value is set, the return value must be less than the set value; when the minimum value is set, the
return value must be over the set value.
NOTE: Please set the generator frequency value as low as possible when the genset is cranking, in order to make the
starter be separated quickly as soon as crank disconnection happens.
NOTE: Configurable inputs could not be set as the same items; otherwise, there are abnormal functions. However, the
configurable outputs can be set as the same items.
HGM9520N Genset Paralleled Controller User Manual
Table 20 Crank Disconnect Conditions
Setting Description
Page 89 of 111
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