HGM7220N/HGM7220S GENSET CONTROLLER USER MANUAL
HGM7220N/HGM7220S Genset Controller 2019-02-28 Version 1.0 Page 14 of 60
failure shall issue warning signal.
b) In case input port is not configured as close status auxiliary input,
Mains Enable:
For mains on-load changing to generator on-load, after open delay and transfer rest delay,
generator close occurs. For generator on-load changing to mains on-load, it is the same as above.
Mains Disable:
For generator off-load changing to generator on-load, generator close outputs. For generator
on-load changing to generator off-load, generator open outputs.
NOTE: In case of applying ATS without neutral breaking, open detection shall be disabled.
NOTE: In case of applying ATS with neutral breaking, open detection can be enabled and disabled. If it is enabled,
please configure open output.
NOTE: In case of applying AC contactor, open detection is recommended to be enabled.
5.2 HGM7220S BREAKER CONTROL PROCESS
5.2.1. MANUAL SWITCHING PROCESS
Breaker is switched by manual control if controller in manual mode.
Operator controls ATS load transfer via C/O button.
Mains Enable:
Press generator button,
1. In case of generator on-load, then generator open outputs;
2. In case of generator&mains off-load, then generator close occurs;
3. In case of mains on-load, when generator synchronization close is over, mains open occurs and
generator is on-load.
NOTE: In the process of waiting for synchronization or if synchronization fails, press generator C/O button to cancel
synchronization, and generator breaker is open. Then press mains C/O button to force mains on-load.
Mains Disable:
Press generator C/O button, and if generator is off-load, then generator close outputs; if generator
is on-load, then generator open outputs.
5.2.2. AUTO SWITCHING PROCESS
Breaker is switched by automatic control if controller in auto mode.
Mains Enable:
1. For mains on-load changing to generator on-load,
Controller shall output generator close when genset and mains meet synchronization conditions.
When it detects generator close feedback signal, mains open outputs and generator is on-load. If
generator close is outputted, generator close feedback signal is not detected during the C/O
synchronization period, generator open is outputted and mains is on-load. Mains open status is
detected at the time of mains open output. When the C/O synchronization time is due, if mains open
fails, generator open outputs. If synchronization signal is not detected during the set synchronization
failure time, then synchronization failure alarm is issued. If synchronization failure alarm is warning
and transfer is forced to be enabled after synchronization failure ten mains open outputs. After open
delay, mains open status is detected at the time of mains open output. When detection time is due, if
mains open fails, then generator shall not close, otherwise, after transfer delay generator close outputs.
Generator close status is detected at the time of generator close output. When the detection time is
To Next Page
Loading...
Need help?
General
