Pulse train control mode – IAI America SCON-CA User Manual

Page 29

2. Pulse Train Control Mode

This product is capable for the positioning control using the pulse train of IAI actuators.

It is necessary to have the positioning control function able to output the pulse train on the host

controller (PLC).

When using this product for the first time, make sure to avoid mistakes and incorrect wiring by

referring to the procedure below. “PC” stated in this section means “PC software”.

Set the Electronic Gear [Refer to 3.3.4 [1]]

Set the electronic gear ratio based on the

amount of actuator operation per pulse in

Parameters No.65 and 66.

�

Check Item

Is the minimum unit of operation set to the value bigger than the minimum

resolution of the encoder?

Is the fraction of the electronic gear ratio reduced to its lowest terms?

�

Yes

Pulse Train Input Output Mode Setting [Refer to 3.3.4 [2]]

Input set the command pulse train input status for the parameter No.63 and No.64.

For the output, set the feedback pulse train output form using the parameters No.68, 69 and 70.

Put Operation Mode Setting Switch to “AUTO” side when the setting is complete.

Servo ON

Input servo ON signal from PLC.

� Check Item

Is the green light [SV]

on the LED status

display ON?

No � Confirm the content of alarm on the teaching

tool such as PC to have an appropriate

treatment.

�

Yes

Safety Circuit Check

Check that the emergency stop circuit (or motor

drive-power cutoff circuit) operates normally to turn

OFF the servo.

No �

Check the emergency stop circuit.

�

Yes

�

No �

�

Yes

No �

�

Check Item

Is the orange light [ALM] on

the LED status display OFF?

Connect the teaching tool

such as PC to confirm the

content of alarm and have

an appropriate treatment.

Test Run Adjustment 2

[Operation Mode AUTO]

Output the pulse train from

PLC to the controller and

check the system operation.

� Can the positioning

operation be

performed normally?

�

Yes

No �

No � Check the electronic gear ratio setting.

Confirm the command pulse train input mode

setting.

Confirm that there is no problem in the actuator

installation, the actuator operation condition

demands a voltage more than rated voltage, and

appropriate pulse trains are input.

Power Supply and Alarm Check

Connect a teaching tool such as PC, turn the

operation mode setting switch to “MANU” side and

turn the power ON for each unit.

Select [Teaching Mode 1 Safety Speed Activated /

PIO Operation Invalid] in the teaching tool such as

PC.

�

Yes

�

Yes

Check of Packed Items

Are there all the delivered items?

Installation and Wiring [Refer to Chapter 1, 2.2, 2.3]

Perform the installation of and wiring for the actuator

and controller.

Point Check Item

• Is frame ground (FG) connected?

• Has the noise countermeasure been taken?

�

Test Run Adjustment 1

[Operation Mode MANU]

Check the operation without mounting a

work and set the safety speed invalid on

the teaching tool such as PC, and then

check the operation with a work

mounted.

Check the actuator if it is installed properly, the

condition for use is below the rated values, etc.

Adjust the servo if necessary.

Check Item

Any vibration or

abnormal noise?

No �

�

Yes

Is it in condition

without any vibration

and abnormal noise?

Test Run Adjustment 3

Check the system operation

conducted by PLC.

�

Yes