Delta Electronics AC Motor Drive VFD007S23A User Manual page 115

Chapter 5 Parameters|VFD-S Series
Following a power failure, the AC drive will start its speed search operation, only if the output
current is greater than the value determined by Pr.8-07. When the output current is less than
that of Pr.8-07, the AC drive output frequency is at a "speed synchronization point". The drive
will start to accelerate or decelerate back to the operating frequency at which it was running
prior to the power failure.
Power
08-05
Input
08-04=d1
Speed search starts
Output
with the Master
Frequency
Frequency
Output
Voltage
8-08 Skip Frequency 1 Upper Limit
8-09 Skip Frequency 1 Lower Limit
8-10 Skip Frequency 2 Upper Limit
8-11 Skip Frequency 2 Lower Limit
8-12 Skip Frequency 3 Upper Limit
8-13 Skip Frequency 3 Lower Limit
Settings
These parameters determine Skip frequency. It will cause the AC drive to skip operation at
these frequency ranges with continuous frequency output.
Pr.8-9, Pr.8-11, Pr.8-13 are for Lower Bound setting, and the settings should follow as Pr.8-9
≧Pr.8-11≧Pr.8-13.
8-14 Auto Restart After Fault
Settings
After fault occurs (allowable faults: over-current OC, over-voltage OV), the AC drive can be
reset/restarted automatically up to 10 times. Setting this parameter to 0 will disable the
reset/restart operation after any fault has occurred. When enabled, the AC drive will restart
with speed search, which starts at the Master Frequency.
5-60
Maximum Allowable
Power Loss Time
Speed Search
08-06
Baseblock Time
d0.0 to d400Hz
d0 to d10
08-05
Speed
Synchronization
Detection
08-04=d2
Speed search starts with
Min. Output Frequency
Revision August 2006, SE08, SW V2.61
Maximum
Allowable Power
08-06
Baseblock Time
Factory Setting: d0.0
Factory Setting: d0
Unit: 0.1
Unit: 0.1
Unit: 0.1
Unit: 0.1
Unit: 0.1
Unit: 0.1
Unit: 1