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SANTERNO
USER MANUAL
6.5.1 MV Loss Quick Break– enable
[MV LOSS QUICK BREAK] = enable, VFD alarms MV loss heavy fault
6.5.2 Standby status, recover MV
[ MV LOSS QUICK BREAK] = disable
[ VOLTAGE LOSS SCREENING TIME DELAY] = n sec
When VFD is in standby status. Restore the MV in n sec then restore the status to standby.
6.5.3 Standby status, not recover MV
[ MV LOSS QUICK BREAK ] = disable
[ VOLTAGE LOSS SCREENING TIME DELAY] = n sec
6.5.4 Running status, recover MV
[ MV LOSS QUICK BREAK] = disable
[ VOLTAGE LOSS SCREENING TIME DELAY] = n sec
The VFD is in standby status, restoring MV in n sec
If [ SELF START AFTER MV LOSS ] = enable, system status restore to running;
If [ SELF START AFTER MV LOSS ] = disable, system status restore to standby;
6.5.5 Running status, not recover MV
[ MV LOSS QUICK BREAK] = disable
[ VOLTAGE LOSS SCREENING TIME DELAY] = n sec
When VFD is in running status, not recover MV within n sec then VFD alarms MV LOSS heavy fault;
When VFD is in standby status, recover MV within n sec then VFD keep MV not ready status.
Figure 6-4 MV power loss status
Power Loss
2.[MV LOSS QUICK BREAK]= disable
Restore HV in [VOLTAGE LOSS SCREENING TIME DELAY]
5.[MV LOSS QUICK BREAK]= disable
Not restore HV in [VOLTAGE LOSS
SCREENING TIME DELAY]
1. [MV LOSS QUICK BREAK]= enable
1. [MV LOSS QUICK BREAK]= enable
Power Loss
Running
status
Standby
status
HV not
ready
[MV LOSS QUICK BREAK]= disable
[SELF START AFTER MV LOSS]= disable
Restore HV in [VOLTAGE LOSS SCREENING TIME DELAY]
4. [MV LOSS QUICK BREAK]= disable
[SELF START AFTER MV LOSS]= disable
Restore HV in [VOLTAGE LOSS SCREENING TIME DELAY]
3.[MV LOSS QUICK BREAK]= disable
Not restore HV in [VOLTAGE LOSS
SCREENING TIME DELAY]