SM-A14448-A/2
5. TROUBLESHOOTING
17
2019-08-19
5. TROUBLESHOOTING
5.1 Items to Check When a Problem Occurs
When a problem occurs, ensure safety and follow the procedure below.
1
Check the LED indicator on the controller.
Green light: Motor energized (servo on)
Green blinking: Motor de-energized (servo off)
Red light: Unreleasable alarm issued
Red blinking: Releasable alarm issued
Off: Control power turned off
2
Check if there is an abnormality with the higher-level controller.
3
Check the voltage of the control power (24 VDC or 48 VDC).
4
Check the details of the alarm.
The details of the alarm can be checked with the setting software (S-Tools).
5
Check the state of the I/O.
The state of the I/O can be checked with the setting software (S-Tools).
6
Check that there is no disconnection or pinching of the cables and that they are connected correctly.
Before checking the continuity, turn off the power and remove the cables to prevent an electric shock.
7
Check that measures (such as connecting the ground wire and attaching the surge suppressor) have
been taken against noise.
8
Check the course of events and the operating conditions at the time the problem occurred.
9
Check the serial number of the product.
If the problem persists, refer also to "5.2 Problems, Causes, and Solutions".
