YASKAWA Sigma Mini SGMM Series User Manual page 87

APPLICATIONS
2.4.2 Zero-clamp cont.
2
Set the motor speed level at which zero-clamp is to be performed in the following parameter.
If zero-clamp speed control is selected, set the motor speed level at which zero-clamp is to be
performed.
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Cn-01
Setting
Bit B Bit A
Zero-clamp Speed Control
This speed control allows the
zero-clamp function to be set when
the motor stops.
D A speed reference is input from
V-REF.
D /P-CON is used to turn the
zero-clamp function ON or OFF.
0 1
/P-CON is open
(OFF)
/P-CON is
closed (ON)
D Torque reference input T-REF
cannot be used.
Settings
ZCLVL Zero-clamp
Level
Cn-0F
Conditions for Zero-clamp
Zero-clamp is performed when all the following conditions are met:
• Zero-clamp speed control is selected.(Bits A and B of memory switch Cn-01 are set to 1
and 0, respectively.)
• /P-CON is turned ON (0 V).
• Motor speed drops below the preset value.
Speed
Preset value for
zero-clamp
/P-CON input
Zero-clamp being
performed
— 2-42 —
Control Mode Control Mode
Speed reference
Zero-clamp
Zero-clamp is performed when the
Turns
zero-clamp
following two conditions are met:
function OFF
/P-CON signal is closed. /P CON signal is closed.
Turns Motor speed is below the value set
zero-clamp
in Cn-0F (ZCLVL).
function ON
Unit: Setting Range: Factory
−1
min 0 to Maximum Setting:
Speed 10
V-REF speed reference
Closed (ON)
Open (OFF)
Servopack
(CN1-12)
/P-CON
(CN1-1*)
For Speed/Torque
Control
Time