7 Troubleshooting
YASKAWA ELECTRIC
TOBP C730600 86F YASKAWA AC Drive Option SI-T3 Installation Manual
39
n
Minor Faults and Alarms
Keypad Display
Minor Fault Name
AEr
Station Address Error
Option is set to an address outside the allowable setting range.
Cause
Possible Solution
Minor Fault
(H2-
= 10)
MECHATROLINK-II
Option is set to an address
outside the allowable setting
range.
Set F6-20 to an address within the specified range.
YES
Keypad Display
Minor Fault Name
CALL
Serial communication transmission error
Communication is not established.
Cause
Possible Solution
Minor Fault
(H2-
= 10)
Communication wiring is
faulty.
• Check for wiring errors.
• Correct the wiring.
YES
An existing short circuit or
communications
disconnection
Check disconnected cables and short circuits and repair as needed.
Programming error on the
master side.
Check communications at start-up and correct programming errors.
Communication circuitry is
damaged.
• Perform a self-diagnostics check
• If the problem continues, replace either the control board or the
entire drive. For instructions on replacing the control board,
contact Yaskawa or a Yaskawa representative.
Termination resistor of the
MEMOBUS/Modbus
communications is not
enabled.
Set DIP switch S2 to the ON position to enable the termination
resistor on a drive located at the end of a network line.
Keypad Display
Minor Fault Name
CyPo
Cycle Power to Active Parameters
Comm. Option Parameter Not Upgraded
Cause
Possible Solution
Minor Fault
(H2-
= 10)
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.
Note: If the option software version is not compatible or if you
install an incorrect option to the drive, it will trigger an alarm.
YES
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