HGM7100N GENSET CONTROLLER USER MANUAL
HGM7100N Genset Controller 2020-09-10 Version1.2 Page 12 of 47
5.2.2 AUTO SWITCHING PROCESS
When controller is in auto mode, switch control process executes auto control process.
a) If input port configured as close status auxiliary input
• If breaker open detection is enabled, for Gen onload transferring to Gen offload, after open
delay, at the time of open output, transfer failure starts to detect; when detection time is due, if
open fails, then it waits for open, otherwise, open is completed. For Gen offload transferring
to Gen onload, after close delay, at the time of close output, transfer failure starts to detect;
when detection time is due, if close fails, then it waits for close, otherwise, close is completed.
• If transfer failure warning is enabled, then it will issue warning signals both for close/open.
• If open detection is not enabled, for Gen onload transferring to Gen offload, after open delay,
open is completed. For Gen offload transferring to Gen onload, after close delay, at the time
of close output, transfer failure starts to detect; when detection time is up, if close fails, then it
waits for close, otherwise, close is completed. If transfer failure warning is enabled, it will
issue warning signal for close failure.
b) If input port not configured as close status auxiliary input
For Gen offload transferring to Gen onload, Gen close outputs. For Gen onload transferring to
Gen offload, Gen open outputs.
NOTES:
1) If ATS without neutral position is used, breakers open detection should be disabled.
2) If ATS with neutral position is used, breakers open detection can be enabled or disabled (please configured the
breaker open output if enabled).
3) If AC contactors are used, breakers open detection enable will be recommended.
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