Overall Dimension - Smartgen HGM4020DC User Manual

12.2 OVERALL DIMENSION

HGM4020DC controller is applicable for 48VDC battery voltage environment. Negative of battery must
be connected with the engine shell. Diameter of wire that connects controller power B+/B- with battery
positive/negative mustn't be less than 2.5mm
wires of charger to battery's positive and negative directly, then, connect wires from battery's positive and
negative to controller's positive and negative input ports in order to prevent charger from disturbing the
controller's normal working.
─
SPEED SENSOR INPUT
Speed sensor is the magnetic equipment which is installed in starter and is used for detecting flywheel
teeth. Its connection wires with controller should apply 2 cores shielding line. The shielding layer should
connect to No. 16 terminal in controller while another side is hanging up. The other two signal wires are
connected to No. 21 and No. 22 terminals in controller respectively. The output voltage of speed sensor
should be within (1~24)V AC(effective value) during the full speed. 12VAC is recommended (at rated speed).
When the speed sensor is installed, let the sensor spun to contacting flywheel first, then, port out 1/3 lap,
and lock the nuts of sensor at last.
─
OUTPUT AND EXPAND RELAYS
All outputs of controller are relay contact output type. If it needs to expand the relays, please add
freewheel diode to both ends of expansion relay's coils (when coils of relay has DC current) or, increase
resistance-capacitance return circuit (when coils of relay has AC current), in order to prevent disturbance to
controller or other equipments.
─
WITHSTAND VOLTAGE TEST
When controller had been installed on control panel, if high voltage test is needed, please disconnect
controller's all terminal connections, in order to prevent high voltage from entering controller and damaging
it.
HGM4020DC Genset Controller
HGM4020DC GENSET CONTROLLER USER MANUAL
Fig.6 - Overall Dimensions
2
. If floating charger is configured, please firstly connect output
_________________________________
Version 1.0 2019-04-10 Page 31 of 31