Torque Limiting Using An External Torque Limit And Analog Voltage Reference - YASKAWA SGDV User Manual

5.8.4 Torque Limiting Using an External Torque Limit and Analog Voltage
Reference
This function can be used to combine torque limiting by an external input and by analog voltage reference.
When /P-CL (or /N-CL) is ON, either the torque limit by analog voltage reference or the setting in Pn404 (or
Pn405) will be applied as the torque limit, whichever is smaller.
Parameter
Pn002 n.
The following chart shows the external torque limiting using an analog voltage reference.
SERVOPACK
/P-CL
/N-CL
Torque limit
value
Speed
reference
Note: This function cannot be used during torque control since the torque limit by analog voltage reference is input from
T-REF (CN1-3, 4).
(1) Input Signals
Use the following input signals to limit a torque by external torque limit and analog voltage reference.
Type Signal Name
T-REF
Input
SG
Refer to 5.5.1 Basic Settings for Torque Control.
Signal
Type
Name
Input /P-CL
Input /N-CL
When /P-CL or /N-CL is enabled, the T-REF terminal
3
is used as the external torque limit input.
Pn400
T-REF
Torque reference input gain
(See 5.5.1)
Pn300
Speed
+
V-REF
reference input
-
gain
(See 5.3.1)
Speed feedback
Connector
Pin Number
CN1-3
CN1-4
Connector
Setting
Pin Number
ON
CN1-26
[Factory setting]
OFF
ON
CN1-12
[Factory setting]
OFF
Meaning
Pn415
T-REF filter time constant
(See 6.9.2)
Pn100
Speed
+
loop
+
gain
Pn101
Speed loop
integral time
constant
Pn405
Reverse external torque limit
(See 5.8.1)
(/N-CL: ON)
Torque reference input
Signal ground for torque reference input
Meaning
Forward external torque limit ON
Forward external torque limit
OFF
Reverse external torque limit ON
Reverse external torque limit
OFF
5.8 Limiting Torque
When Enabled Classification
After restart Setup
Analog
Pn402
Forward
torque
limit (See 5.8.1)
Pn404
Forward
external
torque limit
(/P-CL: ON)
(See 5.8.1)
Torque
reference
(See 5.8.1)
Pn403
Reverse torque limit
Name
Limit Value
The smallest value of these set-
tings: the analog voltage refer-
ence limit, Pn402, or Pn404
Pn402
The smallest value of these set-
tings: the analog voltage refer-
ence limit, Pn403, or Pn405
Pn403
5
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