DA98A AC Servo Drive Unit
User Manual
12
Frequency division
numerator of
position instruction
pulse
① Set frequency division/multiplication (electronic gear) of
position instruction pulse.
② In position control mode, various pulse resource can be
conveniently matched by parameter No.12, No.13 setting to
get a desirable control resolution( i.e. angle/pulse) by user.
③
4
=× CNGP
P：pulse amount of input instruction;
G：electronic gear ratio; G= frequency division numerator /
frequency division denominator
N：motor rotating circles;
C：photoelectric encoder pulses/rev, this system C=2500
④ 〖Example〗If the input instruction pulse is 6000, and servo
motor revolution is 1:
3
5
6000
4250014
=
=
×
=
CN
G
then parameter No.12 is set for 5 and No. 13 is set for 3.
Range of electronic gear ratio recommended is: ⑤
50
50
1
≤≤ G
1~32767
13
Frequency division
denominator of
position instruction
pulse
Refer to parameter No.12. 1~32767
14
Position instruction
pulse input mode
① Set the input mode of position instruction pulse.
② 2 input modes by parameter setting:
0： pulse+sign
1： CCW pulse/CW pulse
③ Viewed from the servo motor shaft axially, the
counterclockwise rotation is defined as negative.
④ Viewed from the servo motor shaft axially, the clockwise
rotation is defined as negative.
0~1
15
Position instruction
pulse reverse
direction
Set for:
0：normal
1：position instruction pulse reverse direction
0~1
16
Positioning
completion range
① Set positioning completion pulse range in position control
mode.
② This parameter provides factors for the drive unit judging
whether the positioning is completed in position control.
When the remaining pulses in position deviator is less than
or equal to the setting value by this parameter, the drive unit
defaults that the positioning is completed and the signal for
it is COIN ON, otherwise, it is COIN OFF.
③ It outputs positioning completion signal COIN in position
control mode, and speed in-position signal SCMP in other
control mode.
0~30000
pulse
17
Position
out-of-tolerance
detection range
① Set the range of position out-of-tolerance alarm detection.
② In position control mode, the drive unit gives position
out-of-tolerance alarm when the counting value of position
deviator exceeds this parameter setting value.
0~30000
×100 pulse
18
Position
out-of-tolerance
error invalid
Set for:
0：The detection of position out-of-tolerance alarm is valid.
1：The detection of position out-of-tolerance alarm is invalid,
and stop detecting the position out-of-tolerance error.
0~1
28
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