Chapter 5 Parameter Introductions
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183
the middle direct voltage exceeds the stall over-voltage point, the ac drive will stop
reducing its output frequency. When the middle direct voltage becomes lower than the
point, the deceleration continues.
◆When the ac drive is in the status of over-voltage at stall, the time last more than 1
minute or press “STOP/RESET ”key directly and hold over 2 seconds, then the ac
drive will coast to stop.
Output Freq.(Hz)
0
Time(s)
Bus voltage(%)
0
Time(s)
Deceleration
Fig. 5-13-5 Deceleration
Pd.08 Input phase loss detection level
Range:1～100%【100%】
Pd.09 Input phase loss detection delay time
Range: 2～255s【10s】
Note:
◆Input phase loss detection function can detect loss of input phase or a serious
imbalance in the three-phase input, in order to protect ac drive. If the input phase loss
detection is hypersensitive, you can appropriately increase the detection level (Pd.08)
and detection delay time (Pd.09). Conversely, decrease the detection level (Pd.08) and
detection delay time (Pd.09).
Pd.10 Output phase loss detection level (SPO)
Range: 0～100%【0%】
Pd.11 Output phase loss detection delay time
Range: 0.0～2.0s【0.2s】
Note:
◆Output phase loss detect function can detect loss of output phase or a serious
imbalance in the three-phase output, in order to protect ac drive and motor. If the
detection of output phase loss is hypersensitive, you can appropriately decrease the
detection level (Pd.10) and increase the detection delay time (Pd.11). Conversely,
increase the detection level (Pd.08) and decrease detection delay time (Pd.09).
Pd.12 Enabling keyboard keys UP/DN
Range: 0,1 【0】
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