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CHAPTER 4 PARAMETER
PA1_04 Rotation direction selection
No.
Name
Rotation direction
04
selection
This parameter keeps consistency between the direction of rotation of the servomotor and the traveling
direction of the machine.
In case of operation with pulse
The direction of rotation caused upon an input of a forward rotation pulse and high level command
sign or a B-phase pulse lead pulse with A / B phase pulse becomes the forward direction, making
the servomotor rotate forward.
4
To switch the phase of the output pulse, select the phase of counterclockwise (CCW) rotation of
the servomotor.
In case of operation with speed command data to the IQ area
VS type: When speed command data (4000H/3000 [r/min]) in word +12 in IQ area is set and the
LS type:
Forward/Reverse rotation
The servomotor rotates forward if it rotates counterclockwise (CCW:
figure on the right) when the output shaft is viewed from the front.
Clockwise rotation is reverse rotation.
PA1_05 Number of command input pulses per revolution
No.
Number of command
input pulses per
05
revolution
This parameter is enabled only under position control.
Enter the number of command pulses necessary to rotate the servomotor a full turn.
The setting range is 64 to 1048576 [pulses]. However, if the end of the model number of the
servomotor is "HB2" (18-bit encoder), the maximum value is 262144 [pulses].
With the default value ("0"), the settings of PA1_06 and _07 (electronic gear numerator and
denominator) are enabled.
4-10
Basic Parameters
0: CCW rotation direction at forward command.
1: CW rotation direction at reverse command.
FWD signal in word +14 is turned on the direction of rotation becomes the forward
direction, making the servomotor rotate forward.
When speed command data (in increments of 0.01 [r/min] with a sign) in word +10 in IQ
area is set and the FWD signal in word +15 is turned on the direction of rotation
becomes the forward direction, making the servomotor rotate forward.
Name
0: Electronic gear is enabled
64 to 16777216 [pulses]: Number of
command input pulses per revolution is
enabled.
Setting range
Setting range
Default
Change
value
0
Power
Forward
rotation
Default
Change
value
0
Power
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