Chapter 5 Parameter Introductions
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166
P8.00+P8.06
t
L
P0.21
t
f
P0.00
P0.09
P0.21
actual frequency
De
cele
rat
ion
p
oint
sl
idin
g
sto
p
ov
ers
hoot
P8.00
Actual Length
Fig. 5-8-2 Fixed length control diagram 2
Tips:
The actual length can be cleared by multi-function input terminal (Define terminal Xi
as No.52 function). The actual length will be calculated only after this terminal is
disconnected.
Actual length (setting of P8.01) will be saved automatically when the power is off. If
the operation frequency is greater than frequency upper limit and no pulse is input after
the running time is longer than 30 seconds, the ac drive reports pulse coder fault (dE)
when actual length is 0.
If P8.00 is set to 0, function of stop at fixed length is disabled, but the calculated length
is still effective.
The setting value must increase 200.0mm when P8.06 is modified by MODBUS
communication. The corresponding relation between communication value and actual
used value (which can be displayed on the keyboard) is as follows:
Reality used value (displayed on the keyboard)) = Communication setting – 200.0mm
5.10 Advanced Control (Group P9)
P9.00 Gain of slip frequency compensation Range: 0.0
～
200.0%
【
0.0%
】
P9.01 Slip compensation time const
Range: 0.01
～
2.55S
【
0.20S
】
Note:
◆
The motor’s slip changes with the load torque, which results in the variance of ac
motor speed. The ac drive output frequency can be adjusted automatically through slip
