Mitsubishi Electric MELSEC iQ-R RD75P4, Руководство пользователя

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14 TROUBLESHOOTING
14.1 Troubleshooting Procedure
515
14
14
TROUBLESHOOTING
This chapter describes errors that may occur when the RD75 is used, and those troubleshooting.
14.1
Troubleshooting Procedure
If a problem occurs, perform troubleshooting by following the procedure below.
1.
Check that each module is mounted correctly.
(

MELSEC iQ-R Module Configuration Manual)
2.
Check the LEDs of the power supply module and CPU module.
(  MELSEC iQ-R CPU Module User's Manual (Startup))
3.
Check that each module is operating correctly with its LEDs. (  Page 515 Checks with LEDs)
4.
Check that the module is operating correctly using the module diagnostics of an engineering tool. (  Page 516 Check
of module status)
Checks with LEDs
By checking the display status of LEDs, the problem can be primarily diagnosed without an engineering tool and the cause is
narrowed down.
•
The RD75 status can be checked with the RUN LED and the ERR LED. The following table lists the RD75 status and the
corresponding LED displays.
 : Off,  : On,
●
: Flashing (at 400ms intervals)
RD75 status LED display Description Action
Normal operation RUN: 
AX3: 
AX4: 
ERR: 
AX1: 
AX2: 
• The axes stopped
• The axes on standby

RUN: 
AX3: 
AX4: 
ERR: 
AX1: 
AX2: 
The axis in operation The LED remains on from the positioning start until the axis
stops at completion of positioning or with an error.
Operation failure RUN: 
AX3: 
AX4: 
ERR: 
AX1: ●
AX2: 
Minor error Check the error code of the error using the module diagnostics
of an engineering tool, and take the action according to the list of
error codes.
RUN: 
AX3: 
AX4:

ERR:
●
AX1: 
AX2:

Moderate error
RUN: 
AX3: 
AX4: 
ERR: 
AX1: 
AX2: 
RUN: 
AX3: 
AX4: 
ERR: 
AX1: 
AX2: 
Online module
change RUN: ●
AX3: 
AX4: 
ERR: 
AX1: 
AX2: 
When the target module is
selected 
RUN:

AX3: 
AX4: 
ERR:

AX1: 
AX2: 
When the target module is ready to
be replaced
