Limiting Torque With An Analog Reference - YASKAWA SGD7S series Product Manual

6.11.3

Limiting Torque with an Analog Reference

The analog voltage on the T-REF terminals (CN1-9 and CN1-10) is used to limit the torque with
an analog reference.
The smallest of the analog reference torque reference and the torque limits for Pn402
*2
Pn403 is used.
*1.
Pn483 is used for a Linear Servomotor.
*2.
Pn484 is used for a Linear Servomotor.
The block diagrams for limiting the torque during speed control are provided below.
• Rotary Servomotors
Torque limit
peed
reference input
There is no polarity for the input voltage of the analog voltage reference for the torque limit.
Information
The absolute value of a positive or negative voltage is input, and a torque limit that corre-
sponds to that absolute value is applied in the forward and reverse directions.
• Linear Servomotors
Force limit
peed
reference input
There is no polarity for the input voltage of the analog voltage reference for the force limit. The
Information
absolute value of a positive or negative voltage is input, and a force limit that corresponds to
the absolute value of the input voltage is applied in the forward and reverse directions.
T-REF (Torque Reference Input) Signal
The input signal that is used for torque limits with an analog voltage reference is described
below.
Type
T-REF
Input
SG
ERVOPACK
Pn400
T-REF
Torque Reference Input Gain
(Refer to 6.7.1.)
Pn 00
+
V-REF
peed Reference
–
Input Gain
(Refer to 6.5.1.)
ERVOPACK
Pn400
T-REF
Force reference input gain
(Refer to 6.7.1.)
Pn 00
+
V-REF
peed Reference
–
Input Gain
(Refer to 6.5.1.)
Signal Connector Pin No.
CN1-9
CN1-10

6.11.3 Limiting Torque with an Analog Reference

Pn415
T-REF Filter Time Con tant
(Refer to 6.7.3.)
Pn100
peed
+
loop gain
Pn101
peed Loop Integral
Time Con tant
peed feedback
Pn415
T-REF Filter Time Con tant
(Refer to 6.7.3.)
Pn100
peed
+
loop gain
Pn101
peed Loop Integral
Time Con tant
peed feedback
Torque reference input
Signal ground for torque reference input
6.11 Selecting Torque Limits
*1
and
Pn402
Forward Torque
Limit
(Refer to 6.11.1.)
Torque
reference
Pn403
Reverse Torque Limit
(Refer to 6.11.1.)
Pn483
Forward Force Limit
(Refer to 6.11.1.)
Force
reference
Pn484
Reverse Force Limit
(Refer to 6.11.1.)
Name
6
6-67