Omron SYSDRIVE 3G3FV User Manual page 198

Advanced Operation
Speed Limit Bias Setting
Parameter Display name p y
number
d5-05 Speed Lmt Bias
Note This parameter cannot be changed during operation.
Set the speed limit bias as a percentage of the maximum frequency. (The max. frequency is
100%.)
The speed limit bias can be used to add margins to the speed limit.
When the speed limit bias is used, it is possible to set the same speed limit value in both the for-
ward and reverse directions. For example, the following settings establish speed limits of 50% of
the maximum frequency in both the forward and reverse directions.
Speed limit setting: Zero (with d5-04 as the speed limit: d5-03 = 2, d5-04 = 0)
Speed limit bias setting: 50% (d5-05 = 50)
When a forward speed limit and a speed limit bias have been set, the speed range of the torque
control is from the "–speed limit bias setting" to the "speed limit setting + speed limit bias setting." In
effect, the speed limit range is extended by the speed limit bias in both the forward and reverse
directions.
When the speed exceeds the reverse
speed limit, the torque is increased in
the forward direction.
Reverse
rotation
H Torque Reference Adjustment
Primary Delay Time Constant for Torque Reference Filter
The time constant of the primary filter in the torque reference section can be adjusted.
6-24
Setting g Units Default
range
0 to 120 %
Output torque
d5-05
Effective range of
torque control
Limit opposite
to speed limit
setting
Valid access levels
setting
V/f V/f with
Control PG
10 Not applicable.
Forward
direction
d5-05
When the speed exceeds the forward
speed limit, the torque is increased in
the reverse direction.
Speed limit setting
Reverse
direction
Chapter 6
Open Loop Flux
Vector Vector
Advanced
Torque reference value
Motor speed
Forward
rotation