Lite-On Technology Corp.
Industrial Automation
182
7.4.
Torque mode
The torque mode for control (T or Tn) is used for the device requiring torque control, such as the
printing machine and coil winding machine...etc. Two modes for command input are available for the
drive, which are the analog and register input.
The input of analog command is used to manipulate the torque performance of motor through the
external voltage. As for the register input, the data of the internal parameter (PA-03~PA-05) is treated
as the torque command.
7.4.1.
Selection of torque command
The source of the torque command can be divided into the analog voltage input externally and the
internal parameter. The selection depends on the DI signal of CN1. Refer to the table below:
Torque
command
no.
DI signal of CN1
Command Source
Contents
Scope
TCM1
TCM0
T1
0
0
Mode
T
External analog
command
Voltage difference
between T-REF and
GND
-10 V ~ +10V
Tn
None
The torque command
is 0.
0
T2
0
1
Parameter of internal register
PA-03
-300.0% ~ 300.0%
T3
1
0
PA-04
-300.0% ~ 300.0%
T4
1
1
PA-05
-300.0% ~ 300.0%
TCM0 ~ TCM1 status: 0 represents open circuit (Open) and 1 represents close circuit (Close).
In the situation that TCM0=TCM1=0, the command is 0 if the mode is Tn. Therefore, if the user
does not need to use the analog voltage as the torque command, he or she may adopt Tn Mode to
make sure that the analog voltage is without zero drift. For T Mode, the command is the analog
voltage difference between T-REF and GND. The voltage range input is -10V ~ +10V. The torque
corresponding to the voltage is adjustable (PA-18).
If either TCM0 or TCM1 is not 0, the torque command is the internal parameter. The command is
effective right after the change of TCM0 ~ TCM1 and CTRG is not needed for triggering. The
torque command discussed in this section can be treated as the torque command under the torque
mode (T or Tn). It can also be input as the command of torque limit under the speed mode (S or
Sn).
