4-83
D
Limiting Operation with External Signals (All Operating Modes)
Parameter No.
Parameter name
Explanation
Reference
Pn50b.2
Pn50b.3
Input signal selection 2
PCL signal selection
NCL signal selection
You must allocate PCL and NCL. (See note 1.)
4-4-3 Important
Parameters
Pn404
Forward torque limit
Set the output torque limit when PCL is ON as
a percentage of the Servomotor rated torque
(setting range: 0% to 800%).
4-4-4
Parameter
Details
Pn405
Reverse torque limit
Set the output torque limit when NCL is ON as
a percentage of the Servomotor rated torque
(setting range: 0% to 800%).
Pn300
+
+
+
--
Pn400
TREF
VREF
Pn404
(PCL : ON)
Pn402
Pn405
(NCL : ON)
NCL
PCL
Integration
(Pn101)
Speed loop
gain
(Pn100)
Speed feedback
Torque limit value
Speed reference
Torque
reference
Pn403
Torque limit
Note 1.
If you change the default settings, set Pn50A.0 (input signal selection mode) to 1.
Note 2.
If the connected Servomotor is set to a value greater than the maximum momentary torque,
the maximum momentary torque will become the set limit.
Note 3.
If using this function with internally-set speed control, set Pn50A.1 to 1 (user-defined set-
tings), and allocate the required input signals (PCL, NCL, SPD1, SPD2, RDIR, etc.)
D
Limiting Normal Operation with Analog Voltage (Position, Speed, Internally-set
Speed Control)
•
When Pn002.0 (torque command input switching) is set to 1, TREF (torque command input) becomes
the analog torque limit input terminal, so you can limit the torque on multiple levels.
•
Calculate the torque limit (%) as follows: Absolute TREF voltage (V) / Pn400 (torque control scale) x
1000.
•
Regardless of whether the voltage is positive or negative, both forward and reverse directions have
the same limits (i.e., absolute value is taken).
Parameter No.
Parameter
name
Explanation
Reference
Pn002.0
Torque
command input
switching
Set Pn002.0 to 1. (Use TREF as analog torque
limit.)
4-4-4 Parameter
Details
Pn400
Torque control
scale
Set TREF voltage when using rated torque. (See
note.)
Note
The default setting is 30 (x 0.1 V/rated torque).
Operation
Chapter 4
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