YASKAWA GA50U Series - Page 112

13 Troubleshooting
112 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
Code Name Causes Possible Solutions
The dEv detection level settings
are incorrect.
Adjust F1-10 [Speed Deviation Detection
Level] and F1-11 [Speed Deviation Detect
DelayTime].
The load is locked up. Examine the machine.
The holding brake is stopping the
motor.
Release the holding brake.
dnE Drive Disabled
A terminal set for H1-xx = 6A
[Drive Enable] turned OFF.
Examine the operation sequence.
dWA2 DriveWorksEZ Alarm 2
There was an error in the
DriveWorksEZ program.
Examine the DriveWorksEZ program and
remove the cause of the fault. This is not a
drive fault.
dWA3 DriveWorksEZ Alarm 3
There was an error in the
DriveWorksEZ program.
Examine the DriveWorksEZ program and
remove the cause of the fault. This is not a
drive fault.
dWAL DriveWorksEZ Alarm
There was an error in the
DriveWorksEZ program.
Examine the DriveWorksEZ program and
remove the cause of the fault. This is not a
drive fault.
E5
MECHATROLINK
Watchdog Timer Err
The drive detected a watchdog
circuit exception while it received
data from the controller.
Examine the MECHATROLINK cable
connection. If this error occurs frequently,
examine the wiring and decrease the effects
of electrical interference as specified by
these manuals:
• MECHATROLINK-II Installation Guide
(MECHATROLINK Members
Association, manual number
MMATDEP011)
• MECHATROLINK-III Installation
Manual (MECHATROLINK Members
Association, publication number
MMATDEP018)
EF
FWD/REV Run
Command Input Error
A forward command and a reverse
command were input at the same
time for longer than 0.5 s.
Examine the forward and reverse command
sequence and correct the problem.
EF0
Option Card External
Fault
The communication option card
received an external fault from the
controller.
1. Find the device that caused the external
fault and remove the caus.
2. Clear the external fault input from the
controller.
A programming error occurred on
the controller side.
Examine the operation of the controller
program.
EF1
External Fault
(Terminal S1)
MFDI terminal S1 caused an
external fault through an external
device.
1. Find the device that caused the external
fault and remove the cause.
2. Clear the external fault input in the
MFDI.
The wiring is incorrect. Correctly connect the signal line to MFDI
terminal S1.
External Fault [H1-01 = 2C to
2F] is set to MFDI terminal S1,
but the terminal is not in use.
Correctly set the MFDI.
EF2
External Fault
(Terminal S2)
MFDI terminal S2 caused an
external fault through an external
device.
1. Find the device that caused the external
fault and remove the cause.
2. Clear the external fault input in the
MFDI.