i.6 Troubleshooting
NOTICE
Refer to the Z1000 AC Drive User Manual TOEP C710616 45 for detailed information on Troubleshooting and complete
product instructions necessary for proper installation, set-up, troubleshooting and maintenance.
The Z1000 AC Drive User Manual is posted on the Yaskawa website, www.yaskawa.com.
u
Fault Detection
n
Fault Displays
A fault is indicated by a code on the data display and the ALM LED is on. The drive output is always switched off immediately
and the motor coast to stop.
To reset a fault, trace and remove the cause, and push the Reset key on the keypad or cycle the power supply.
Refer to the User Manual for a complete list of causes and possible solutions.
Table i.28 Fault Displays
HOA
Keypad
Display
Name
bAT HOA Keypad Battery Voltage Low
bUS
Option Communication Error
• The connection was lost after establishing initial
communication.
• Only detected when the run command frequency
reference is assigned to an option card.
CE
MEMOBUS/Modbus Communication Error
Control data was not received for the CE detection time set
to H5-09.
CoF
Current Offset Fault
Drive starts operation while the current-detection circuit
failure, or the induced voltage remains in the motor
(coasting and after rapid deceleration).
CPF00,
CPF01
<1>
Control Circuit Error
CPF02
A/D Conversion Error
An A/D conversion error or control circuit error occurred.
CPF03
Control Board Connection Error
Connection error between the control board and the drive.
CPF06
EEPROM Memory Data Error
There is an error in the data saved to EEPROM.
CPF07,
CPF08
Terminal Board Connection Error
CPF20,
CPF21
<2>
Control Circuit Error
CPF22 Hybrid IC Failure
CPF23
Control Board Connection Error
Connection error between the control board and the drive.
CPF24
Drive Unit Signal Fault
The drive capacity cannot be detected correctly (Drive
capacity is checked when the drive is powered up).
CPF46
Terminal Board Error
A terminal board that is not supported has been installed in
the drive.
HOA
Keypad
Display
Name
EF0
Option Card External Fault
An external fault condition is present.
EF1 to EF7
External Fault (input terminal S1 to S7)
External fault at multi-function input terminal S1 to S7.
Err
EEPROM Write Error
Data cannot be written to the EEPROM
FAn
Internal Fan fault
Fan or magnetic contactor failure
Fn1
External Fan fault
External fan failure
FbH
Excessive PI Feedback
PI feedback input is greater than the level set to b5-36 for
longer than the time set to b5-37. Set b5-12 to 2 or 5 to
enable fault detection.
FbL
PI Feedback Loss
This fault occurs when PI feedback loss detection is
programmed to trigger a fault (b5-12 = 2) and the PI
feedback level is below the detection level set to b5-13 for
longer than the time set to b5-14.
GF
Ground Fault
• A current short to ground exceeded 50% of rated current
on the output side of the drive.
• Setting L8-09 to 1 enables ground fault detection in
models 2A0075 to 2A0396, 4A0052ooA, and 4A0065
to 4A0590.
LF
Output Phase Loss
• Phase loss on the output side of the drive.
• Setting L8-07 to 1 or 2 enables Phase Loss Detection.
LF2
Output Current Imbalance
One or more of the phases in the output current are lost.
nSE
Node Setup Error
A terminal assigned to the node setup function closed
during run.
oC
Overcurrent
Drive sensors detected an output current greater than the
specified overcurrent level.
i.6 Troubleshooting
62
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide
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