YASKAWA GA50U Series

13 Troubleshooting
YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation 111
Code Name Causes Possible Solutions
Electrical interference caused a
communication data error.
• 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.
The communication protocol is not
compatible.
• Examine the values set in H5-xx.
• Examine the settings on the controller
side and correct the difference in
communication conditions.
The value set in H5-09 [CE
Detection Time] is too small for
the communications cycle.
• Change the controller software settings.
• Increase the value set in H5-09.
The controller software or
hardware is causing a
communication problem.
Examine the controller and remove the
cause of the problem.
CP1
Comparator 1 Limit
Error
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].
Examine the monitor value and remove the
cause of the fault.
CP2
Comparator 2 Limit
Error
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].
Examine the monitor value and remove the
cause of the fault.
CrST Cannot Reset
The drive received a fault reset
command when a Run command
was active.
Turn off the Run command then de-energize
and re-energize the drive.
CyC
MECHATROLINK
CommCycleSettingErr
The communications cycle setting
of the controller is not in the
permitted range of the
MECHATROLINK interface
option.
Set the communications cycle of the
controller in the permitted range of the
MECHATROLINK interface option.
CyPo
Cycle Power to Accept
Changes
Although F6-15 = 1 [Comm.
Option Parameters Reload =
Reload Now], the drive does not
update the communication option
parameters.
Re-energize the drive to update the
communication option parameters.
dEv Speed Deviation
The load is too large. Decrease the load.
The acceleration/deceleration
times are too short.
Increase the values set in C1-01 to C1-08
[Acceleration/Deceleration Times].