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Position control by vector control
4.6.3
Position control (Pr. 419, Pr. 428 to Pr. 430) by inverter pulse train input
Simple position pulse train command can be input by pulse train input and sign signal (NP) to the JOG terminal.
Parameter
Name
Number
Position command source
419
selection
428
Command pulse selection
429
Clear signal selection
430
Pulse monitor selection
The above parameters can be set when the FR-A7AP/FR-A7AL (option) is mounted.
(1) Operation
Turning ON the servo ON signal (LX) cancels the output shut-off and the operation ready signal (RDY) turns ON after
0.1s. Turning ON the STF (forward stroke end signal) or STR (forward stroke end signal) runs the motor according to
the commanded pulse. When the forward (reverse) stroke end signal turns OFF, the motor does not run in that
direction.
Forward stroke end (STF)
Reverse stroke end (STR)
Operation ready completion (RDY)
Inverter pulse train command
(2) Pulse train form type selection (Pr. 428, NP signal)
1) Set "2"(simple pulse train position command) in Pr. 419.
2) Set "68" in Pr. 178 to Pr. 189 (input terminal function selection) to assign simple position pulse train sign (NP).
3) Select command pulse train using Pr. 428
Pr. 428 Setting
Command Pulse Train Type
Negative
0 to 2
logic
Positive
3 to 5
logic
4)Select vector control, then select position control.
REMARKS
When Pr. 419 Position command source selection = "2" (simple pulse train position command), JOG terminal serves as simple
position pulse train input terminal regardless of the Pr. 291 Pulse train I/O selection setting.
136
Initial Value
0
0
1
9999
Forward rotation
Actual rotation
Reverse rotation
Base signal
Servo on (LX)
0.1s
Sign signal (NP)
In-position (Y36)
Pulse train +
rotation signal sign
Pulse train +
rotation signal sign
Setting
Range
Simple position control function by contact input.
0
(position command by parameter settings)
Pulse train position command from the positioning
1
module of the programmable controller system
(when FR-A7AL is installed)
Simple pulse train position command by inverter
2
pulse train input
0 to 2
Pulse train + rotation
signal sign
3 to 5
Deviation counter is cleared at edge of turning ON
0
of the clear signal (CLR) from OFF.
Deviation counter while the clear signal (CLR) is
1
ON
The status of various pulses during running is
0 to 5
displayed.
9999
Frequency monitor is displayed.
At Forward Rotation
At Reverse Rotation
JOG
L
NP
JOG
NP
H
Description
Negative logic
Positive logic
H
L
Vector
Vector
Vector
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