Chapter 4 Parameters
VFD-EL-W
4-71
Settings 0.1–5.0 sec. Default: 0.5
When the AC motor drive detects a momentary power loss, it blocks its output and then waits for a period of
time specified by this parameter before resuming operation. Set this parameter at a value that ensures that
any residual regeneration voltage from the motor on the output has disappeared before the drive is activated
again.
This parameter also determines the waiting time before resuming operation after an External Base Block and
Number of Auto-restarts after Fault (Pr.08.15).
08.08 Current Limit for Speed Search Unit: 1
Settings 30–200% Default: 150
Limits the drive output current during a speed search.
When executing a speed search, the V/F curve is defined by the settings in Parameter Group 01.
08.09
Skip Frequency 1 Upper Limit Unit: 0.01
08.10
Skip Frequency 1 Lower Limit Unit: 0.01
08.11
Skip Frequency 2 Upper Limit Unit: 0.01
08.12
Skip Frequency 2 Lower Limit Unit: 0.01
08.13
Skip Frequency 3 Upper Limit Unit: 0.01
08.14
Skip Frequency 3 Lower Limit Unit: 0.01
Settings 0.00–400.00 Hz Default: 0.00
These parameters cause the AC motor drive not to remain in these frequency ranges with continuous
frequency output. Set these six parameters as follows Pr.08.09 Pr.08.10 Pr.08.11 Pr.08.12 Pr.08.13
Pr.08.14.
0
08.09
08.10
08.11
08.12
08.13
08.14
08.15
Number of Auto-restarts After Fault Unit: 1
Settings 0–10 Default: 0
08.16
Auto-reset Time for Restart after Fault Unit: 0.1
Settings 0.1–6000 sec. Default: 60.0
After an over-current OC or over-voltage OV fault occurs, the AC motor drive can automatically reset/restart
up to ten times.
Setting this parameter to 0 disables automatic reset/restart operation after any fault.
When enabled, the AC motor drive restarts with speed search, which starts at the last frequency before the
fault.
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