5.3 Description of Function Codes
5-218
Description of the Control
The PG interface card allows the inverter to internally count feedback pulses issued from the encoder (PG) and
control the motor so that the control object starts moving from the previously specified start point (S point),
decelerates and switches to the creep speed operation to arrive at the specified stop position (E point).
Turning the run command ON with “Start/reset” command S/R being ON starts the positioning control.
See Figure 5.3-18 “Positioning Control Behaviour” and Table 5.3-23.
ON
ON
ON
Frequency Hz
Acc
l
time
(F0
7/
E1
0)
Time
ST (J73)
L (J78, J79)
S point
(J74, J75)
E point
(J81, J82)
Reference
frequency
0
Z point
(J76, J77)
Creep speed (J80)
ER (J83)
CP (J85)
Run command
OFF
Time
ET (J84)
Timer output TO
OFF
Positioning
completed PSET
OFF
Note: The current position must be within E +/- ER
point after the time ET has elapsed.
Decl time
(F08/E11)
D
e
c
l
t
i
m
e
(
F0
8
/
E
1
1
)
ON
Start/reset S/R OFF
t
Figure 5.3-18 Positioning Control Behaviour
• The positioning control applies to motor 1 only.
•
During jogging (inching) operation or when the PID control is enabled (J01 ≠
0), the positioning control
An undervoltage alarm that occurs in positioning control triggers the alarm
ero
does not enter the restart mode (specified by F14).
Enabling the positioning control disables the auto-reset function specified by H04 and H05.
The operation status in positioning control can be displayed on the keypad by using Menu #3 “Drive
Monitoring.
” For details, refer to “Monitoring.” Refer to Chapter 3, see the description of function code E52.
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