Omron OMNUC FND Series User Manual page 142

Operation
The following diagram provides an example of backlash compensation during operation.
Slip Compensation
Set slip compensation if slippage occurs in the mechanical system during feeding.
Set these parameters to compensate for the amount of slippage that occurs when feeding for just the
amount set for pulse rate 2. For example, if 10 mm is fed with PP-01 (minimum setting unit) set to 0.001
and PP-03 (pulse rate 2) to 10 (mm), and if the slippage amount is 0.1 mm, then set PP-08 to 0 and
PP-09 to 0.100.
Compensating for just the amount of slippage that occurs during feeding absorbs the play from the
mechanical system and improves the stopping precision. Also, in order to match the mechanical axis
speed to the command value, the motor is speeded up for just the amount of slippage (within the
motor's maximum speed range).
The following diagram provides an example of slip compensation during operation.
Speed
PRM No. Parameter name
PP-10 Positive software limit
(leftmost digits)
PRM No. Parameter name
PP-11 Positive software limit
(rightmost digits)
PRM No. Parameter name
PP-12 Negative software limit
(leftmost digits)
PRM No. Parameter name
PP-13 Negative software limit
(rightmost digits)
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Backlash compensation
Slip compensation
Motor rotation speed with slip compensation
Motor rotation speed without slip compensation
Setting range
–9,999 to
9,999
Setting range
0 to 9,999
Setting range
–9,999 to
9,999
Setting range
0 to 9,999
Chapter 3
Time
Unit Factory setting
Mechanical 9,999
axis move-
ment
Unit Factory setting
Mechanical 9,999
axis move-
ment
Unit Factory setting
Mechanical –9,999
axis move-
ment
Unit Factory setting
Mechanical 9,999
axis move-
ment
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