YASKAWA T103 Installation & Primary Operation page 91

Code Name
CE Modbus Communication Error
CP1 Comparator 1 Limit Error
CP2 Comparator 2 Limit Error
CrST Cannot Reset
CyC MECHATROLINK
CommCycleSettingErr
dEv Speed Deviation
dnE Drive Disabled
dWAL DriveWorksEZ Alarm
dWA2 DriveWorksEZ Alarm 2
dWA3 DriveWorksEZ Alarm 3
MECHATROLINK Watchdog Timer
E5
Err
EF FWD/REV Run Command Input
Error
EF0 Option Card External Fault
EF1 External Fault (Terminal S1)
YASKAWA TOEPC71061782C GA800 Drive Installation & Primary Operation
Causes
There is damage to the communications circuitry.
The termination resistor setting for MEMOBUS/
Modbus communications is incorrect.
The communications cable wiring is incorrect.
There is a short circuit in the communications cable
or the communications cable is not connected.
Electrical interference caused a communication data
error.
The communication protocol is not compatible.
The value set in H5-09 [CE Detection Time] is too
small for the communications cycle.
The controller software or hardware is causing a
communication problem.
The monitor value set in H2-20 [Comparator 1
Monitor Selection] was in the range of H2-21
[Comparator 1 Lower Limit] and H2-22
[Comparator 1 Upper Limit].
The monitor value set in H2-26 [Comparator 2
Monitor Selection] was outside the range of H2-27
[Comparator 2 Lower Limit] and H2-28
[Comparator 2 Upper Limit].
The drive received a fault reset command when a Run
command was active.
The communications cycle setting of the controller is
not in the permitted range of the MECHATROLINK
interface option.
The load is too heavy
A terminal set for H1-xx = 6A [Drive Enable] turned
OFF.
There was an error in the DriveWorksEZ program.
There was an error in the DriveWorksEZ program.
There was an error in the DriveWorksEZ program.
The drive detected a watchdog circuit exception while
it received data from the controller.
A forward command and a reverse command were
input at the same time for longer than 0.5 s.
The communication option card received an external
fault from the controller.
MFDI terminal S1 caused an external fault through an
external device.
The wiring is incorrect.
20 Troubleshooting
Possible Solutions
• Do a self-diagnostics check.
• If the problem continues, replace the control board or the drive.
Contact Yaskawa or your nearest sales representative to replace
the control board.
On the last drive in a MEMOBUS/Modbus network, set DIP switch
S2 to the ON position to enable the termination resistor.
Correct wiring errors.
• Repair short circuits and connect cables.
• Replace the defective communications cable.
• Examine the control circuit lines, main circuit lines, and ground
wiring, and decrease the effects of electrical interference.
• Make sure that a magnetic contactor is not the source of the
electrical interference, then use a Surge Protective Device if
necessary.
• Use only the recommended cables or other shielded line. Ground
the shield on the controller side or the drive input power side.
• Separate the communication wiring from drive power lines, and
install a noise filter to the input side of the power supply for
communication.
• Decrease the effects of electrical interference from the controller.
• Examine the values set in H5-xx.
• Examine the settings on the controller side and correct the
difference in communication conditions.
• Change the controller software settings.
• Increase the value set in H5-09.
Examine the controller and remove the cause of the problem.
Examine the monitor value and remove the cause of the error.
Examine the monitor value and remove the cause of the error.
Turn off the Run command then de-energize and re-energize the
drive.
Set the communications cycle of the controller in the permitted
range of the MECHATROLINK interface option.
Decrease the load.
Examine the operation sequence.
Examine the DriveWorksEZ program and remove the cause of the
error. This is not a drive fault.
Examine the DriveWorksEZ program and remove the cause of the
error. This is not a drive fault.
Examine the DriveWorksEZ program and remove the cause of the
error. This is not a drive fault.
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)
Examine the forward and reverse command sequence and correct
the problem.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input from the controller.
1. Find the device that caused the external fault and remove the
cause.
2. Clear the external fault input in the MFDI.
Correctly connect the signal line to MFDI terminal S1.
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