YASKAWA SGDV User Manual page 103

(2) Changing Input Signal Allocations (Pn50A.0 = 1)
Use the /ZCLAMP signal when switching to zero clamp function.
Type
Input /ZCLAMP Must be allocated
Note: Use parameter Pn50D.0 to allocate the /ZCLAMP signal for use. For details, refer to 3.3.1 Input Signal Allocations.
To use the zero clamp function, set Pn000.1 to 0, 3, 4, 6, 9 or A.
Parameter
n. 0
n. 3
n. 4
Pn000
n. 6
n. 9
n. A
Note: If Pn000.1 is set to 6 or 9, the zero clamp function will become invalid when the control is changed to any methods
other than speed control and internal set speed control.
For speed control, the zero clamp function locks the servomotor when the speed reference drops below the set
speed in the zero clamp level by setting Pn50D.0 to 7 (zero clamp function is always valid). The input signals
(/ZCLAMP, /P-CON) are not necessary.
(3) Related Parameter
Set the motor speed at which to enter zero clamp operation.
Zero Clamp Level
Pn501
Setting Range
0 to 10000
Note: Even if a value that exceeds the maximum speed of the servomotor is set, the actual speed will be limited to the max-
imum speed of the servomotor.
Connector
Setting
Pin Number
ON
(closed)
OFF
(open)
Control Method
Speed control
Internal set speed control
Internal set speed control <=> Speed
control
Internal set speed control <=> Torque
control
Torque control <=> Speed control
Speed control <=> Speed control with
zero clamp function
Setting Unit
-1
1 min
5.3 Speed Control (Analog Voltage Reference)
Meaning
The zero clamp function will be turned ON if the input volt-
age of the speed reference (V-REF) drops below the set speed
in the zero clamp level (Pn501).
Turns OFF the zero clamp function.
Input Signal
When Enabled Classification
Used
/ZCLAMP
/ZCLAMP,
SPD-A,
SPD-B,
SPD-D,
C-SEL
/ZCLAMP,
SPD-A,
SPD-B,
SPD-D,
After restart
C-SEL
/ZCLAMP,
SPD-A,
SPD-B,
SPD-D,
C-SEL
/ZCLAMP,
C-SEL
/ZCLAMP,
C-SEL
Speed
Factory Setting When Enabled
10 Immediately
Setup
Classification
5
Setup
5-23