Automatic Operation Mode 1 (Rotation Direction Specifying Indexer) - Mitsubishi Electric MELSERVO-J4 Series Instruction Manual

6. HOW TO USE INDEXER

6.2.2 Automatic operation mode 1 (rotation direction specifying indexer)

In this operation mode, the servo motor rotates in a fixed direction 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
Selecting automatic operation
mode 1 (rotation direction
specifying indexer)
Rotation direction selection
Servo motor speed
Acceleration time
constant/Deceleration time
constant
Torque limit (Note)
Note. The torque limit will change from [Pr. PC35 Internal torque limit 2] to the setting value of [Pr. PA11 Forward rotation
torque limit] or [Pr. PA12 Reverse rotation torque limit] when ST1 (Forward rotation start) is inputted. After MEND
(Travel completion) is outputted, the time has passed set with [Pr. PT39] and the torque limit will change from [Pr.
PA11 Forward rotation torque limit] or [Pr. PA12 Reverse rotation torque limit] to the setting value of [Pr. PC35 Internal
torque limit 2].
Used device/parameter
Control mode selection of [Pr. PA01]
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)
[Pr. PC05]
RT (Second acceleration/deceleration
selection)
[Pr. PA11]
[Pr. PA12]
[Pr. PC35]
[Pr. PT39]
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Setting
Select "_ _ _ 8" (positioning mode (indexer
method)).
Set any next station No. (Refer to (3) of this
section.)
Switch off MD0.
Switch on MD1.
The rotation direction to a station No. will be as
follows.
Off: Station No. decreasing direction
On: Station No. increasing direction
Set a servo motor speed.
1. When RT is turned off
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. When RT is turned on
Acceleration time constant: setting value of [Pr.
PC30 Acceleration time constant 2]
Deceleration time constant: setting value of [Pr.
PC31 Deceleration time constant 2]
Set a torque limit value for during operation.
Set a torque limit value for during stop.
Set time to switch the torque limit value from
during operation until during stop.