TECO A510s - Torque Control; Torque Input Method; Torque Filter Time; Speed Limit Input Setting

4-296
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 (negative
torque command), and activate the digital input terminal (Motor direction clockwise).
Table 4.4.16 Torque input method
Input Input terminal Parameter setting Description
Voltage input
(0 -10V)
AI2
(SW1-2=” V ”)
04-00=0,2 Terminal AI2 signal level: 0 - 10V
04-05=15 AI2 used as for torque reference
Current input
(4 - 20mA)
AI2
(SW1-2=” I ”)
04-00=1,3 Terminal AI2 signal level: 4 - 20mA
04-05=15 AI2 used as for torque reference
21-01: Torque filter time
Time constant used to reduce the torque signal interference and adjust the torque response. Increase filter time in
case the system becomes unstable.
21-02/21-03: Speed limit input setting
Limits the motor speed while operating in torque control. When the external torque reference and the system load
are out of balance the speed limit may be used to prevent the motor from damaging the system.
The speed limit can be set via the digital inputs or using and analog input signal to set the speed limit level. Refer
to the table 4.4.17 for the speed limit input method.