Omron Q2A Series Technical Manual page 563

Note:
• When you use the Zero Servo function, keep the Run command ON. If the Run command is OFF, the drive will not hold the motor
shaft in position.
• When you turn oFF the Zero-Servo command, the terminal set for Zero Servo Complete will deactivate.
• If A1-02 = 7 [PM CLVector] and an external force rotates the motor during Zero Servo, the drive will detect dv4 [Inversion Prevention
Detection]. To prevent dv4 detection, increase b9-01 [Zero Servo Gain] or increase the number of pulses set in F1-19 [Dev4 Mode
Selection].
■
b9-01 Zero Servo Gain
No.
Name
(Hex.)
b9-01 Zero Servo Gain
(01DA)
If the drive is not responsive, or if there is too much deviation from the Zero Servo start point when you increase
the load, increase this setting. If oscillation or hunting occurs, decrease this setting.
Note:
• Set C5-xx [C5: ASR - SPEED REGULATION] parameters correctly before you adjust the Zero Servo gain.
• When you operate with the Zero Servo command enabled, oscillation and hunting must not occur.
■
b9-02 Zero Servo Width for Completion
No.
Name
(Hex.)
b9-02 Zero Servo Width for
Completion
(01DB)
When the position of the motor shaft is in the range of "Zero Servo start position ± b9-02", the drive will activate a
MFDO set for ZeroServo ok [H2-xx = 8].
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the responsiveness for the Zero Servo function.
V/f CL-V/f OLV CLV AOLV
Sets the range to trigger an output terminal set for "Zero Servo Complete" during Zero Servo
operation. Be sure to set the deviation from the Zero Servo start position.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
12.2 b: APPLICATION
Default
(Range)
5
(0 - 100)
Default
(Range)
10
(0 - 16383)
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