Nel Trip Description - Smartgen HGM9420N User Manual

HGM9420N_HGM9420LT GENSET CONTROLLER USER MANUAL

14 NEL TRIP DESCRIPTION

Non-essential Load----NEL is the abbreviation.
The controller can control the NEL1, NEL2 and NEL3 to trip separately. The order of the essentiality is:
NEL3 > NEL2 > NEL1
 Auto Trip：
When NEL auto trip is enabled:
If the genset power has exceed the NEL trip value, after the trip delay, NEL1 will trip the earliest, and
then is NEL2，NEL3；
When NEL auto reconnection is enabled:
If the genset power has fallen below the auto reconnection set value, after the auto reconnection delay,
NEL3 will reconnect the earliest, and then is NEL2，NEL1；
Fig. 10 NEL Sequence
 Manual Trip
If NEL manual trip input is active (earthed failing edge is active), NEL1 will trip without delay; If NEL
manual trip input is active again, NEL2 will trip; If NEL manual trip input is active the third time, NEL3 will
trip.
If NEL manual reconnection input is active (earthed failing edge is active), NEL3 will reconnect without
delay; If NEL manual reconnection input is active again, NEL2 will reconnect; If NEL manual
reconnection input is active for the third time, NEL1 will reconnect. During this process, the genset power:
judges if the genset power has fallen below the NEL reconnection value. If genset power is less than
NEL reconnection value, then the input is active; otherwise the input is deactivated.
NOTE: When auto trip and auto reconnection are enabled, manual trip is still active.
HGM9420N_HGM9420LT Genset Controller 2019-12-10 Version 1.0 Page 96 of 112