Applying The Torque Limit; Analog Monitoring; Command Source Selection Of Torque / Speed Limit - Delta ASDA-A3 Series User Manual

Operation Mode
6.6.2
The method for using the Torque Limit command and Torque command are the same. You can
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use either the external analog voltage or the internal parameters (P1.012 – P1.014). Please refer
to Section 6.4.1 for descriptions.
You can use the torque limit in Position mode (PT, PR) or Speed mode (S) to limit the motor
torque output. When you execute the command in Position mode using the external pulse or
execute the command in Speed mode using the external analog voltage, DI signals are available
and you can set TCM0 – TCM1 to determine the Torque Limit command (internal parameters). If
there is not enough DI signal available, you can execute the Torque Limit command using the
analog voltage. When you set the Torque Limit function (P1.002) to 1, you enable the Torque
Limit function. See the timing diagram below.
6.6.3
You can find the required voltage signal with analog monitoring. Two analog channels are
provided by the servo drive and located on terminals 15 and 16 of CN1. Please refer to Chapter
8 for more information about the relevant parameters.
Parameter
P0.003
P1.003
P1.004
P1.005
P4.020
P4.021
Example:
Specify a motor speed of 1000 rpm, which corresponds to analog voltage output of 8V with the
maximum speed of 5000 rpm. The setting is as follows:
P1.004 =
6-34

Applying the torque limit

Torque limit function disabled
(P1.002)
TCM0 ~ 1 inavalid

Command source selection of torque / speed limit

Analog monitoring

×100% =
Required speed 1000 RPM
Max. speed 5000 RPM
Torque limit function enabled
TCM0 ~ 1 valid
Function
Analog output monitoring
Encoder pulse output polarity
MON1 analog monitor output proportion
MON2 analog monitor output proportion
Offset adjustment for analog monitor output (Ch1)
Offset adjustment for analog monitor output (Ch2)
×100% = 20%
(P1.002)
Revision December, 2017
ASDA-A3