Chapter 4 Parameters
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Revision Dec. 2008, 04VE, SW V2.05
4-123
ON
OFF
01-09
Output frequency
Run/Stop
Time
DC Braking Time
DC Braking Time
during Stopping
Minimum
output
frequency
Start-point for
DC braking
time during
stopping
DC Brake at Start-up is used for loads that may move before the AC drive starts, such as fans
and pumps. Under such circumstances, DC Brake can be used to hold the load in position
before setting it in motion.
DC Brake at stop is used to shorten the stopping time and also to hold a stopped load in
position. For high inertia loads, a dynamic brake resistor may also be needed for fast
decelerations.
07-05
Proportional Gain for DC Brake
Unit: 1
Control
mode
VF
VFPG
SVC
Factory Setting: 50
Settings
1 to 500Hz
It is used to set the output voltage gain when DC brake.
07-06
Momentary Power Loss Operation Selection
Control
mode
VF VFPG SVC
FOCPG TQCPG
Factory Setting: 0
Settings
0
Operation
stops
after momentary power loss.
1
Operation continues after momentary power loss, speed search
starts with the Master Frequency reference value.
2
Operation continues after momentary power loss, speed search
starts with the minimum frequency.
This parameter determines the operation mode when the AC motor drive restarts from a
momentary power loss.
In PG control mode, the AC motor drive will execute the speed search function automatically
by the PG speed when this setting isn’t set to 0.
07-07
Maximum Allowable Power Loss Time
Unit: 0.1
Control
mode
VF VFPG SVC
FOCPG TQCPG
Factory Setting: 2.0
Settings
0.1 to 5.0 sec
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