SMC Networks LECSB2-T Series User Manual

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16. POSITIONING MODE
16.18.2 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
Used device/parameter
Setting
Selecting indexer method
Control mode selection of [Pr. PA01]
Select "_ _ _ 8" (positioning mode (indexer
method)).
Next station position
DI0 (Next station No. selection 1) to
DI7 (Next station No. selection 8)
Set any next station No. (Refer to (3) of this
section.)
Selecting automatic operation
mode 1 (rotation direction
specifying indexer)
MD0 (Operation mode selection 1)
Switch off MD0.
MD1 (Operation mode selection 2)
Switch on MD1.
Rotation direction selection
SIG (External limit/Rotation direction
decision/Automatic speed selection)
The rotation direction to a station No. will be as
follows.
Off: Station No. decreasing direction
On: Station No. increasing direction
Servo motor speed
[Pr. PC05]
Set a servo motor speed.
Acceleration time
constant/Deceleration time
constant
RT (Second acceleration/deceleration
selection)
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]
Torque limit (Note)
[Pr. PA11]
[Pr. PA12]
Set a torque limit value for during operation.
[Pr. PC35]
Set a torque limit value for during stop.
[Pr. PT39]
Set time to switch the torque limit value from
during operation until during stop.
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].

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English