gefran VDI100 Series Instruction Manual page 236

Torque
- Droop function can be used to approximate the characteristic of a high slippage motor. Set 11-52 to the
percentage of the speed reduction that amounts to 100% of motor torque based on the maximum frequency
(01-02).
- Droop function is disabled when 11-52 is set to 0.0%.
11-53: Droop control delay
This setting is used adjust the response speed of the droop function. Increase value in case of current oscilla-
tion.
Code Parameter Name / Range
11-54 Output kWHr initialization
0: Do not clear output kWHr
1: Clear output kWHr
Reset kW-hour meter (12-40).
Code Parameter Name / Range
11-55 STOP key selection
0: Stop key is disabled when the operation command is not provided by operator.
1: Stop key is enabled when the operation command is not provided by operator.
11-55= 0: Stop button disabled when operation command is set for terminals (00-02=1) or communication (00-
02=3).
11-55= 1: Stop button enabled
Code Parameter Name / Range
11-56 UP/DOWN selection
0: UP/DOWN reference frequency adjustment with ENTER key.
1: UP/DOWN reference frequency adjustment without ENTER key.
11-56= 0: Changing the reference frequency on the keypad in UP/DOWN control requires the ENTER button to
236
Motor A
characteristics
,
Motor B s torque
characteristics
Reference
Speed
(a) T > T
A B
Torque
100%
Torque
,
s torque
Motor A
Motor B
T
A
Load torque
T
B
T -T > > 0
A B
Speed
droop amount 11-52 ( slip equivalent )
Speed of Rotation
Synchronous speed
,
s torque characteristics
,
s torque characteristics
Load torque
T -T ~ 0
A B
Reference Speed
Speed
(b) T T
A B
VDI100 • Instruction manual