4-84
D
Limiting Analog Voltage with External Signals (Position, Speed, Internally-set
Speed Control)
•
If Pn002.0 (torque command input switching) is set to 3, when PCL and NCL are ON, TREF (torque
command input) becomes the analog torque limit input terminal.
•
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 (taken as absolute values).
Parameter No.
Parameter name
Explanation
Reference
Pn002.0
Torque command
input switching
Set Pn002.0 to 3 (use TREF as analog torque
limit when PCL and NCL are ON).
4-4-4 Parameter
Details
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
Pn400
Torque control scale
Set TREF voltage for when the rated torque is
used. (See note 2.)
4-4-4 Parameter
Details
Note 1.
If changing the default setting, set Pn50A.0 (input signal selection mode) to 1 (user-defined
settings).
Note 2.
The default setting is 30 (x 0.1 V/rated torque).
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.).
4-5-11 Soft Start Function (Speed, Internally-set Speed
Control)
H
Functions
•
This function accelerates and decelerates the Servomotor in the set acceleration and deceleration
times.
•
You can set the acceleration and deceleration independently of each other using the trapezoidal ac-
celeration and deceleration curve.
•
The soft start processes REF (speed command input) or internally-set speed control switching to re-
duce shock during acceleration and deceleration.
•
This function is effective for simple positioning and speed switching operations.
Note
Do not use this function for a position controller with an acceleration/deceleration function.
H
Parameters Requiring Settings
Parameter No. Parameter name
Explanation
Reference
Pn305
Soft start
acceleration time
Set the acceleration time from 0 (r/min.) to the
maximum rotation speed (setting range: 0 to 10,000
(ms)).
4-4-4
Parameter
Details
Pn306
Soft start
deceleration time
Set the deceleration time from maximum rotation
speed to 0 (r/min.) Setting range: 0 to 10,000 (ms).
Operation
Chapter 4
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