HGM7220N/HGM7220S GENSET CONTROLLER USER MANUAL
HGM7220N/HGM7220S Genset Controller 2019-02-28 Version 1.0 Page 6 of 60
2 PERFORMANCE AND CHARACTERISTICS
HGM7220N: has mains&generating power monitoring function, which are used for
mains/generating automatic changeover control. It is applicable for single unit automation system
consisting of one mains circuit and one generating circuit. Mains disable can be performed by
parameter setting and at this time it is used for single unit automation and genset self-start and
self-stop can be controlled by remote start signal.
HGM7220S: is added mains synchronization changeover function on the basis of HGM7220N.
Main features are the followings:
— 132x64 LCD display with backlit, and selectable language interface (Chinese, English, and other
languages) that can be chosen on site, which is convenient for debugging personnel commissioning.
—RS485 communication interface, by which “4 remotes” (remote control, remote measuring, remote
communication and remote adjusting) function can be realized through MODBUS protocol.
—Suitable for 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, and 2-phase 3-wire power
systems with voltage 120/240V and frequency 50/60Hz, and HGM7220N can also be used in 400Hz
system (please order alone.).
—Collecting and showing 3-phase voltage, 3-phase current, power parameter and frequency of
generating or mains power.
Mains Generator
Line voltage (Uab, Ubc, and Uca) Line voltage (Uab, Ubc, and Uca)
Phase voltage (Ua, Ub, and Uc) Phase voltage (Ua, Ub, and Uc)
Frequency Hz Frequency Hz
Phase sequence Phase sequence
Load
Current Ia, Ib, Ic A (unit)
Each phase and total active power P kW (unit)
Reactive power Q kvar (unit)
Apparent power S kVA (unit)
Power factor PF
Accumulate total generating power W kWh, kvarh, kVAh (unit)
Output percentage with load (active power/rated power)X100%
— For mains controller has over and under voltage, over and under frequency, loss of phase, and
inverse phase sequence functions; and for generator controller has over and under voltage, over and
under frequency, over current and over power, reverse power, loss of phase, inverse phase sequence
functions.
— Precisely collecting engine parameters:
Temp. (WT) Unit: °C/°F
Oil Pressure (OP) Unit: kPa/psi/bar
Fuel Level (FL) Unit: %
Speed (RPM) Unit: r/min (RPM)
Battery Voltage Unit: V
Charger D+ Voltage Unit: V
Total running accumulation maximum 65535 hours.
Start times accumulation maximum 65535 times
— Protection control function: diesel genset automatic start/stop, ATS (Auto Transfer Switch) control
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