Wecon VD2 SA Series Servo Drives User Manual (Full V1.0)
83
WECON technology Co., Ltd
too small, the motor's acceleration and deceleration capacity may be weakened. During constant
torque operation, the actual motor speed cannot reach the required value. The torque command
limit value is determined by the function code [P01-15] and [P01-16].
Function
code
Name
Setting
method
Effective
time
Defaults Range
Definition
Unit
P01-15
Forward
torque
limit
Operation
setting
Effective
immediately
3000
0~3000 Forward torque
limit value
0.1%
P01-16
Reverse
torque
limit
Operation
setting
Effective
immediately
3000
0~3000
Reverse torque
limit value
ms
Table 6-41Torque limit parameter details
(2) Set torque limit DO signal output
When the torque instruction reaches the torque limit value, the driver outputs a torque limit signal
(T-LIMIT) for the host computer use. At this time, one DO terminal of the driver should be assigned
to function 139 (T-LIMIT, in torque limit) , And confirm that the terminal logic is valid.
DO function
code
Function name
Function
139
T-LIMIT, in torque
limit
Valid, the servo drive reaches the torque limit value and is
limited to the limit value
Invalid, the servo drive torque instruction has not reached
the limit value
Table 6-42 Function codes in DO torque limit
6.4.4 Torque DO output functions
The feedback value of the torque instruction is compared with different thresholds, and can output
the DO signal for the host computer use. The DO terminal of the servo drive is assigned to different
functions and make sure that the logic is valid.
(1) Torque arrival
The torque arrival function is used to determine whether the actual torque instruction reaches the
set interval. When the actual torque instruction reaches the torque instruction threshold, the
servo drive outputs a torque arrival signal (T-COIN) for the host computer use.
Figure 6-39 Torque arrival output waveform