LED Display
LCD Display
Fault Name
rr
rr
Dynamic Braking Transistor
The built-in dynamic braking transistor failed.
Cause
Possible Solution
The braking transistor is damaged
• Cycle power to the drive and check for reoccurrence of the fault.
• Replace the drive.
The control circuit is damaged
LED Display
LCD Display
Fault Name
5
c
SC
IGBT Short Circuit or Ground Fault
Cause
Possible Solution
IGBT fault
• Check motor wiring.
• Turn off the power supply, then turn it on. If the problem continues, contact your Yaskawa representative
or the nearest Yaskawa sales office.
IGBT short circuit detection circuit fault
The drive is damaged
• Check the drive output side short circuit for a broken output transistor
B1 and U/T1, V/T2, W/T3
– and U/T1, V/T2, W/T3
• Contact your Yaskawa representative or nearest Yaskawa sales office.
LED Display
LCD Display
Fault Name
5Er
SEr
Too Many Speed Search Restarts
The number of Speed Search restarts exceeded the value set to b3-19.
Cause
Possible Solution
Parameters related to Speed Search are set to
the wrong values
• Reduce the detection compensation gain during Speed Search (b3-10).
• Increase the current level when attempting Speed Search (b3-17).
• Increase the detection time during Speed Search (b3-18).
• Repeat Auto-Tuning.
The motor is coasting in the opposite
direction of the Run command
Set b3-14 to 1 to enable Bi-Directional Speed Search.
LED Display
LCD Display
Fault Name
T1 E
TIE
Time Interval Error
Cause
Possible Solution
An error has occurred in the Real-Clock Time
function of the HOA keypad.
Replace the HOA keypad. For instructions on replacing the HOA keypad, contact Yaskawa or your nearest
sales representative.
LED Display
LCD Display
Fault Name
vl3
UL3
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the
allowable time (L6-03).
Cause
Possible Solution
Parameter settings are not appropriate for the
load
Check the settings of parameters L6-02 and L6-03.
There is a fault on the machine side
Check the load for any problems.
LED Display
LCD Display
Fault Name
vl4
UL4
Undertorque Detection 2
The current has fallen below the minimum value set for torque detection (L6-05) for longer than the
allowable time (L6-06).
Cause
Possible Solution
Parameter settings are not appropriate for the
load
Check L6-05 and L6-06 settings
There is a fault on the machine side
Check the load for any problems.
LED Display
LCD Display
Fault Name
vl6
UL6
Underload Det 6
Motor Underload
The load has fallen below the underload curve defined in L6-14.
Cause
Possible Solution
6.3 Fault Detection
YASKAWA
TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
265
6
Troubleshooting
Содержание iQpump Micro CIMR-PW Series
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