gefran VDI100-3110-KBX-4

21 - Torque And Position Control Parameters
Code Parameter Name / Range
21-00 Torque control selection
0: Speed control
1: Torque control
21-01 Filter time of torque reference
0~1000 msec
21-02 Speed limit selection
0: according AI input
1: according to the set value of 21-03
2: Input by the Communication Address (2502H)
21-03 Speed limit value
-120~120 %
21-04 Speed limit bias
0~120 %
21-00: Torque control selection
Select between speed control and torque control in SV mode.
21-00= 0: Speed control (20-00, 20-09), ASR setting
21-00= 1: Torque control (21-01 to 4), torque control setting
A multi-function digital input terminal (03-00 to 03-08) set to 44 (speed / torque control switching) can be used
to switch between speed and torque mode externally. When the input terminal is active torque control is select-
ed otherwise speed control is selected.
Refer to gure 4.4.108 for the speed control architecture and gure 4.4.121 for torque control architecture.
Figure4.4.121Blockgureofthetorquecontrol
Torque Reference
(from AI 2)
Speed Limit
(from AI 1)
Speed Limit
(set by
21-03)
Speed Feedback
Speed Controller
&
Speed Limiter
Speed Limit Bias
21-04
Tref
21-02=0
21-02=1
N
Lmt
N FB
+
+
Ⅰ
Ⅱ
Ⅲ Ⅳ
rpm
torque
Torque Limit
(21-05 to 21-08)
Internal
Torque
Reference
Control Block
Input
Methods
Speed Limit
(from communication
address 2502H)
21-02=2
Torque Control
The torque reference command (Tref) uses analog input AI2 (04-05=15)
Note: Torque reference command cannot be set via the keypad.
Multi-function analog input (AI2) can used for torque reference (04-05=15) (torque) or torque compensation
level (04-05=16).
The direction (torque output) of the motor depends on the polarity of the analog input signal (AI2) instead of the
direction of the run command.
Analog input AI2: Positive voltage forward torque reference (Motor direction counter clockwise).
Analog input AI2: Negative voltage reverse torque reference (Motor direction clockwise).
To switch to a negative torque reference set one of the multi-function digital input (03-00 to 03-07) to 45 (nega-
tive torque command), and activate the digital input terminal (Motor direction clockwise).
VDI100 • Instruction manual 271