YASKAWA E-7-Series SGD7S Product Manual page 193

6.5 Speed Control
6.5.4 Zero Clamping
/ZCLAMP (Zero Clamping) Signal
Use the /ZCLAMP signal to enable zero clamping.
 When Using the Default Input Signal Allocations (Pn50A = n.0)
The /ZCLAMP signal is allocated to pin CN1-41 on the I/O signal connector by default.
Type
Input
 When Changing Input Signal Allocations (Pn50A = n.1)
You must allocate the /ZCLAMP signal. Allocate the signal with Pn50D = n.X (/ZCLAMP
(Zero Clamping Input) Signal Allocation).
Refer to the following section for details.
6.1.1
Type
Input
Enabling Zero Clamping
To enable using zero clamping, set the control method (Pn000 = n.X) to 0, 3, 4, 5, 6, 7, 9
or A. You can use zero clamping only for operation with speed control.
If Pn000 = n.X is set to 5, 6, 7, or 9, zero clamping will be disabled when the control
method is changed to any method other than speed control.
Information
Parameter
Pn000
6-24
Signal Connector Pin No.
/ZCLAMP CN1-41
on page 6-4
Input Signal Allocations
Signal Connector Pin No. Signal Status
/ZCLAMP Must be allocated.
If you set the parameter to keep the /ZCLAMP always active (Pn50D = n.7) for speed con-
trol, zero clamping will be applied whenever the speed reference is equal to or lower than the
speed set for the zero clamping level. In this case, using the /ZCLAMP signal is not necessary.
Control Method
 
n. 0 Speed control
 
n. 3 Internal set speed control
Switching between internal set
 
n. 4 speed control and speed control
with analog references
Switching between internal set
 
n. 5
speed control and position control
Switching between internal set
 
n. 6
speed control and torque control
Switching between position con-
 
n. 7
trol and speed control
Switching between torque control
 
n. 9
and speed control
Switching between speed control
 
n. A with analog references and speed
control with zero clamping
Signal Status
Zero clamping is applied if the input voltage of the
V-REF (Speed Reference Input) signal is equal to or
ON (closed)
lower than the speed set for the zero clamping level
(Pn501 or Pn580).
OFF (open) Zero clamping is disabled.
Zero clamping is applied if the input voltage of the
V-REF (Speed Reference Input) signal is equal to or
ON (closed)
lower than the speed set for the zero clamping level
(Pn501 or Pn580).
OFF (open) Zero clamping is disabled.
Used Input Signals
/ZCLAMP
/ZCLAMP, SPD-A,
SPD-B, SPD-D
/ZCLAMP, SPD-A,
SPD-B, SPD-D,
C-SEL
/ZCLAMP, SPD-A,
SPD-B, SPD-D,
C-SEL
/ZCLAMP, SPD-A,
SPD-B, SPD-D,
C-SEL
/ZCLAMP, C-SEL
/ZCLAMP, C-SEL
/ZCLAMP
Meaning
Meaning
When
Classification
Enabled
After restart Setup