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PARAMETERS
137
Position control by vector control
4.6.3 Position control (Pr. 419, Pr. 428 to Pr. 430) by inverter pulse train input
(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.
(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
4)Select vector control, then select position control.
Simple position pulse train command can be input by pulse train input and sign signal (NP) to the JOG terminal.
Parameter
Number
Name Initial Value
Setting
Range
Description
419
Position command source
selection
0
0
Simple position control function by contact input.
(position command by parameter settings)
1
Pulse train position command from the positioning
module of the programmable controller system
(when FR-A7AL is installed)
2
Simple pulse train position command by inverter
pulse train input
428 Command pulse selection 0
0 to 2
Pulse train + rotation
signal sign
Negative logic
3 to 5 Positive logic
429 Clear signal selection 1
0
Deviation counter is cleared at edge of turning ON
of the clear signal (CLR) from OFF.
1
Deviation counter while the clear signal (CLR) is
ON
430 Pulse monitor selection 9999
0 to 5
The status of various pulses during running is
displayed.
9999 Frequency monitor is displayed.
The above parameters can be set when the FR-A7AP/FR-A7AL (option) is mounted.
Pr. 428 Setting Command Pulse Train Type At Forward Rotation At Reverse Rotation
0 to 2
Negative
logic
Pulse train +
rotation signal sign
3 to 5
Positive
logic
Pulse train +
rotation signal sign
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.
Vector
Vector
Vector
Actual rotation
Forward rotation
Reverse rotation
Base signal
Operation ready completion (RDY)
Forward stroke end (STF)
Reverse stroke end (STR)
Inverter pulse train command
Sign signal (NP)
In-position (Y36)
Servo on (LX)
0.1s
JOG
NP
H
L
JOG
NP
H
L