Delta VFD-A, Руководство пользователя

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32
Pr.31
Pr.30
DC brake starting frequency
Pr.28
DC braking current %
Pr.29
Minimum output
frequency
Pr.08
Pr.32 Pr.33 Pr.34 Pr.35
Momentary Power Loss Protection
Parameter # 32
Parameter Name Momentary power failure operation mode
Factory Setting d0000
Settings d0000 Operation stops after momentary power loss
d0001 Operation continues after momentary power loss.
Speed search starts with the frequency reference value
d0002 Operation continues after momentary power loss.
Speed search starts with the Minimum output frequency, Pr.08
Note Multi-function Indication and Photocoupler outputs that are
programmed for “fault indication” will not be energized during
restart after a momentary power failure. (refer to Pr. 45 and 57)
This parameter determines the AC drive mode of operation after recovery from a
momentary power failure.
Parameter # 33
Parameter Name Maximum allowable power loss time
Factory Setting d002.0 Sec
Units 0.1 Sec
Parameter value d000.3 - d005.0 Sec
If during a power failure the power loss is less than the time defined by Pr.33, then
the AC drive will resume operation (set by Pr.32). If the maximum allowable power
loss time is exceeded, the AC drive output power will remain off and must be reset
to resume operation (the fault indication will be set).
Parameter # 34
Parameter Name Minimum base block time
Factory Setting d000.5 Sec
Units 0.1 Sec
Parameter value d000.3 - d005.0 Sec
When a momentary power loss is detected and the power failure is less than the
time set by Pr.33, the AC drive output will resume operation after the specified
period of time determined by Pr.34. This parameter should be set to a value where
the residual output voltage is nearly zero.