YASKAWA Sigma-II Series, User Manual

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8 Operation
8.9.4 Torque Limiting Using an External Torque Limit and Analog Voltage Reference
8-72
8.9.4 Torque Limiting Using an External Torque Limit and Analog Voltage Reference
This function can be used to combine torque limiting by an external input signal and by analog voltage reference.
Because the torque limit by analog voltage reference is input from T-REF (CN1-9, 10), this function cannot be
used during torque control. Use /P-CL (CN1-45) or /N-CL (CN1-46) for torque limiting by external input signal.
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.
(1) Related Parameters
* The setting unit is a percentage of rated torque (i.e., the rated torque is 100%).
Torque limit
value
Speed
reference
+
+ +
-
T-REF
V-REF
Pn404
( /P-CL:ON )
Forward torque
value (Pn402)
Pn405
( /N-CL : ON)
(Pn100)
Speed loop
integral
time
constant
(Pn101)
Speed loop
gain
Speed feedback
Torque
reference
Reverse torque
value (
Pn403)
/N-CL
/P-CL
SERVOPACK
Torque reference
input gain
(Pn400)
Speed
refer-
ence
input
gain
(Pn300)
Parameter Meaning
Pn002 n. ††† 3
Speed control option: When /P-CL or /N-CL is enabled, the T-REF terminal is used as the
external torque limit input.
When n. ††† 2 is set, T-REF is used for torque feed-forward input, but the functions cannot be used together.
Pn404 Forward External Torque Limit
Setting Range Setting Unit Factory Setting Setting Validation
0 to 800 1% 100 Immediately
Pn405 Reverse External Torque Limit
Setting Range Setting Unit Factory Setting Setting Validation
0 to 800 1% 100 Immediately
Speed Position Torque