gefran VDI100 Series User Manual

Torque limit can be set in two ways:
- Use torque limit parameters (21-05 to 21-08) to set a xed torque limit.
- Set the torque limit by using the multi-function analog input (AI2).
There are four torque limits that can be set separately, one for each quadrant:
(I) Positive torque limit in forward direction (21-05 positive torque limit)
(II) Positive torque limit of reverse direction (21-06 negative torque limit)
(III) Negative torque limit in reverse direction (21-07 forward regenerating torque limit)
(IV) Negative torque limit in forward direction (21-08 reversal regenerating torque limit)
Refer to Figure 4.4.127.
Figure4.4.127Torquelimitsetting
Output Torque (T)
Positive torque
Negative torque
Motor Speed
Forward
direction
Reverse
direction
21-08
21-05
21-06 21-07
III
III IV
I: Forward rotation positive torque
II: Reverse rotation positive torque
III: Reverse rotation negative torque
IV: Forward Rotation negative torque
Torque limit setting by using multi-function analog input AI2 (04-05).
Table4.4.18Torquelimitanaloginput
04-05 (AI2) Function
11 Positive torque limit
12 Negative torque limit
13 Regenerative torque limit (for both forward and reversal directions).
14 Positive/negative torque limit (positive and negative detection torque limit )
Set the analog input terminal (AI2) signal level (04-00), gain (04-07) and bias (04-08)
The default setting for the analog input AI2 is 0 -10V representing 0 – 100% of the motor rated torque).
Figure 4.4.128 shows the relationship between the output torque and the torque limit.
Figure4.4.128Analoginputtorquelimit(AI2)
Output Torque (T)
(Positive torque limit, 04-05=11)
Motor Speed (N)
21-06
21-07
21-05
(Positive / negative torque limit, 04-05=14)
I: Forward driving
II: Reverse
regenerating
(Regenerative torque limit, 04-05=13)
(Negative torque limit, 04-05=12)
(Positive / negative torque limit, 04-05=14)
III: Reverse driving
IV: Forward generating
21-08
When the analog input is set to positive torque limit (value = 11) the torque limit is active in the third and fourth
quadrant.in the reverse direction (regenerative torque in the second quadrant).
When the analog input is set to negative torque limit (value = 12) the torque limit is active in the third and fourth
VDI100 • Instruction manual 275

gefran VDI100 Series Specifications

General

Brand	gefran
Model	VDI100 Series
Category	Inverter
Language	English