8 Operation
8.9.4 Torque Limiting Using an External Torque Limit and Analog Voltage Reference
8-74
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
Speed reference
input gain
Pn300
+
+
+
-
Torque reference
input gain
Pn400
T-REF
V-REF
Pn404
(/P-CL:ON)
Forward torque
limit value (Pn402)
Pn405
(/N-CL:ON)
Speed loop
integral
time
constant
(Pn101)
Speed loop
gain
(Pn100)
Speed feedback
Torque
reference
Reverse torque
limit value (Pn403)
/N-CL
/P-CL
SERVOPACK
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
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