Specifications

7 Troubleshooting
28 YASKAWA ELECTRIC TOEP C710616 27A YASKAWA AC Drive - A1000 Quick Start Guide
 Operator Programing Errors
An Operator Programming Error (OPE) occurs when an inapplicable parameter is set or an individual parameter setting
is inappropriate. When an OPE error is displayed, press the ENTER button to display U1-18 (OPE fault constant). This
monitor will display the parameter that is causing the OPE error.
 Auto-Tuning Errors
Digital Operator Cause Corrective Action
Drive capacity and value set to o2-04 do not match. Correct the value set to o2-04.
Parameters were set outside the allowable setting range. Set parameters to the proper values.
A contradictory setting is assigned to multi-function contact
inputs H1-01 through to H1-08.
• The same function is assigned to two inputs. (this excludes
“External fault” and “Not used”)
• Input functions which require the setting of other input
functions were set alone.
• Input functions that are not allowed to be used
simultaneously have been set.
• Fix any incorrect settings.
• Refer to the Technical Manual for more details.
• The run command source (b1-02) or frequency reference
source (b1-01) is set to 3 but no option board is installed.
• The frequency reference source is set to pulse input but H6-
01 is not 0.
• Install the required option board.
• Correct the values set to b1-01 and b1-02.
Settings to multi-function analog inputs H3-02 and H3-10
and PID functions conflict.
• H3-02 and H3-10 are set to the same value. (this excludes
settings “0” and “F”)
• PID functions have been assigned to both analog inputs and
the pulse input at the same time.
• Fix any incorrect setting.
• Refer to the Technical Manual for more details.
A function has been set that cannot be used in the control
mode selected.(might appear after control mode change)
• Fix any incorrect setting.
• Refer to the Technical Manual for more details.
The V/f pattern setting is incorrect.
• Check the V/f pattern settings.
• Refer to the Technical Manual for more details.
Digital Operator Cause Corrective Action
Motor data fault
The input motor data are not valid. (e.g. the base frequency
and base speed do not fit).
Re-enter the data and repeat Auto-Tuning.
Minor Fault
• The wiring is faulty.
• The load is too heavy.
• Check the wiring.
• Check the load. Always perform Auto-Tuning with the load
decoupled from the motor.
The STOP button was pressed and Auto-Tuning was
canceled.
Repeat the Auto-Tuning.
Resistance fault
• Wrong input data.
• Auto tuning exceeded the given time frame.
• Calculated values out of range.
• Check the input data.
• Check the wiring.
• Re-enter the data and repeat the Auto-Tuning.
No-Load Current Error
• Incorrect data was entered.
• Auto tuning took too long.
• Calculated values out of range.
Rated Slip Error
• Wrong data input.
• Auto tuning exceeded the given time frame.
• Calculated values out of range.
Acceleration error
The motor did not accelerate for the specified acceleration
time.
• Increase the acceleration time C1-01.
• Check the torque limits L7-01 and L7-02.
Motor speed fault.
The torque reference was too high.
• Increase the acceleration time (C1-01).
• If possible, disconnect the load.
oPE01
oPE02
oPE03
oPE05
oPE07
oPE08
oPE10
Er-01
Er-02
Er-03
Er-04
Er-05
Er-08
Er-09
Er-11