Automatic Operation Mode 2 (Shortest Rotating Indexer) - Mitsubishi Electric MELSERVO-J4 Instruction Manual

6. HOW TO USE INDEXER

6.2.3 Automatic operation mode 2 (shortest rotating indexer)

This operation mode automatically changes a rotation direction to the shortest distance to execute
positioning to a station.
The positioning is executed by selecting a station No. using 8-bit devices of the DI0 (Next station No.
selection 1) to DI7 (Next station No. selection 8). For the servo motor speed and acceleration/deceleration
time constant during operation, the values set in the point tables are used.
(1) Device/parameter
Set input devices and parameters as follows.
Item
Selecting indexer method
Next station position
Automatic operation mode 2
(shortest rotating indexer)
selection
Servo motor speed
Acceleration time
constant/Deceleration time
constant
(2) The other parameter setting (number of stations)
Set a number of stations to [Pr. PT28]. The setting is the same as that of automatic operation mode 1.
Refer to section 6.2.2 (2) (b).
[Pr. PA14 Rotation direction selection] is not used in the automatic operation mode 2.
Used device/parameter
Control mode selection of [Pr. PA01
Operation mode]
DI0 (Next station No. selection 1) to
DI7 (Next station No. selection 8)
MD0 (Operation mode selection 1)
MD1 (Operation mode selection 2)
SIG (External limit/Rotation direction
decision/Automatic speed selection)
RT (Second acceleration/deceleration
selection)
6 - 12
Setting
Select "_ _ _ 8" (positioning mode (indexer
method)).
Set any next station No. (Refer to (3) of this
section.)
Switch on MD0.
Switch on MD1.
The servo motor speed will be as follows.
Off: setting value of [Pr. PC05 Automatic operation
speed 1]
On: setting value of [Pr. PC06 Automatic operation
speed 2]
1. Turning off RT will be as follows.
Acceleration time constant: setting value of [Pr.
PC01 Acceleration time constant 1]
Deceleration time constant: setting value of [Pr.
PC02 Deceleration time constant 1]
2. Turning on RT will be as follows.
Acceleration time constant: setting value of [Pr.
PC30 Acceleration time constant 2]
Deceleration time constant: setting value of [Pr.
PC31 Deceleration time constant 2]