Advertisement
Sigma II User's Manual
5.2.9
Torque Limiting 2 by Analog Voltage Reference
Torque limiting 2 by analog voltage reference limits torque by assigning a torque
analog voltage to the T-REF terminal (CN1-9 and 10). It cannot be used for torque
control because the torque reference input terminal T-REF is used as an input termi-
nal.
Torque is limited at the forward run side when the P-CL signal turns ON; and is lim-
ited at the reverse run side when the N-CL signal turns ON.
Torque limit value
Speed reference
n
Using Torque Limiting 2 by Analog Voltage Reference
To use this function, set the following parameter to 3:
Parameter
Speed Control Option
Pn002.0
(T-REF Terminal Allocation)
This parameter can be used to enable torque limiting 2 by analog voltage reference.
Pn002.0 Setting
0
1
2
3
This function cannot be used with the torque feed-forward function described in
5.2.8 Torque Feed–forward Function.
To use this function, verify how input signals have been allocated. (Refer to section
5.3.3 Input Circuit Signal Allocation). The following table outlines factory default
T-REF
Pn400
Speed loop
+
V-REF
gain
Pn300
(Pn100)
-
Speed feedback
Signal
None.
T-REF terminal used for external torque limit input.
T-REF terminal used for torque feed–forward input.
T-REF terminal used for external torque limit input when P-CL and N-CL are valid.
5-46
Chapter 5: Parameter Settings and Functions
(/N-CL: ON)
+
+
Integration
(Pn101)
Pn405
Pn403
(/N-CL: ON)
Torque limit
Setting
(rpm)
Default Setting: 0
T-REF Function
(/P-CL: ON)
Pn402
Pn404
(/P-CL: ON)
Torque
reference
Control Mode
Speed Control
Position Control
Advertisement
