Mitsubishi Electric MELSERVO-J4 Instruction Manual page 254

6. HOW TO USE INDEXER
(2) Digital override
Setting [Pr. PT38] to "_ _ 1 _" enables the digital override function.
Actual servo motor speed will be the value multiplying the command speed by the digital override
selected with OV0 (Digital override selection 1) to OV3 (Digital override selection 4). This is enabled with
all the operation modes.
(a) When [Pr. PT42] is set to 50 and [Pr. PT43] to 5 in the automatic operation mode 1 (rotation direction
specifying), the chart will be as follows.
Power supply
ALM (Malfunction)
MEND (Travel completion)
PS0 (Station output 1) to
PS7 (Station output 8)
DI0 (Next station No. selection 1) to
DI7 (Next station No. selection 8)
Forward rotation
0 r/min
Servo motor speed
Reverse rotation
ST1 (Forward rotation start)
SIG (External limit/Rotation direction
decision/Automatic speed selection)
MD0 (Operation mode selection 1)
MD1 (Operation mode selection 2)
OV0 (Digital override selection 1) to
OV3 (Digital override selection 4)
Example) [Pr. PT42]: 50, [Pr. PT43]: 5
(Note) Device
OV3 OV2
0 0
0 0
0 0
0 0
1 1
1 1
1 1
Note. 0: Off
1: On
ON
OFF
ON
OFF
ON
OFF
All off
Next station No.
selection 1
Digital override: 100%
Station
position No. 1
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Digital override: 100%
OV1 OV0
0 0 100 [%] of parameter setting speed
0 1 50 [%] of parameter setting speed
1 0 55 [%] of parameter setting speed
1 1 60 [%] of parameter setting speed
0 1 110 [%] of parameter setting speed
1 0 115 [%] of parameter setting speed
1 1 0 [%] of parameter setting speed
All off
Station Station
output 1 output 3
Next station No. Next station No.
selection 3 selection 1
Station position No. 1
Station position
No. 3
Digital override: 50%
Digital override: 50%
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Description
All off All off
Station output 1
Next station No.
selection 3
Digital override: 115%
Digital override: 85%
Station
position No. 3
3.5 ms or shorter
Digital override:
Digital override: 115%
85%