Smartgen HGM4020DC - Mains Have Rules; Protection; Warnings

HGM4020DC GENSET CONTROLLER USER MANUAL
HGM4020DC Genset Controller Version 1.0 2019-04-10 Page 10 of 31
Optional stop contions are as below:
0: Pile Volt is higher than the upper limit and load current is lower than the lower limit;
1: Pile volt is higher than the upper limit;
2: Load current is lower than the lower limit;
3: Pile Volt is higher than the upper limit or load current is lower than the lower limit;
NOTE: Load current lower limit detection is active only while genset is normal running and meanwhile genset will stop
only when load current detection time is reached.
4.8 MAINS HAVE RULES
Mains have rules suit for 3P4W/3P3W AC system.
Table 5 – Mains Have Rules
No.
Rules Description
1
Phase A must be
electrified.
B/C phase cannot be missing;
2
One of phase B/C can be missing;
3
Two of phase B/C can be missing;
4
Phase A can not
be electrified.
One of three phases can be missing;
5
Two of three phases can be missing;
5 PROTECTION
5.1 WARNINGS
When controller detects warning signals, it is warning only and not to stop the genset. Besides, the
LCD displays the warning information.
Table 6 - Warning Alarm Types
No.
Type
Description
1
Low Pressure
Warn
When the controller detects that the oil pressure has fallen below the
pre-set value, it will initiate a warning alarm and the corresponding alarm
information will be displayed on LCD.
2
Failed to Stop Warn
After ETS hold time/wait stop delay has expired, if gen-set does not stop
completely, it will initiate a warning alarm and the corresponding alarm
information will be displayed on LCD.
3
Low Fuel Level
Warn
When the controller detects that the fuel level has fallen below the pre-set
value, or detects that the low fuel level warning input is active, it will initiate
a warning alarm and the corresponding alarm information will be displayed
on LCD.
4
Reserved
5
Bat. Under Volt
Warn
When the controller detects that battery voltage has fallen below the
pre-set value, it will initiate a warning alarm and the corresponding alarm
information will be displayed on LCD.
6
Bat. Over Volt
Warn
When the controller detects that battery voltage has exceeded the pre-set
value, it will initiate a warning alarm and the corresponding alarm
information will be displayed on LCD.
7
Input Warn
When the controller detects that the auxiliary input warning signals, it will
initiate a warning alarm and the corresponding alarm information will be
displayed on LCD.
8
Loss Speed Warn
When the controller detects that the engine speed is 0 and the delay is 0, it
will initiate a warning alarm and the corresponding alarm information will
be displayed on LCD.
9
Room Temp High
Warn
When the controller detects that the temperature of machine room has
exceeded pre-set temp. value (including sensor open circuit), it will initiate
a warning alarm and the corresponding alarm information will be displayed
on LCD.