YASKAWA iQpump Micro CIMR-PW Series User Manual page 265

LED Display LCD Display
rr
Cause
The braking transistor is damaged
The control circuit is damaged
LED Display LCD Display
5c
Cause
IGBT fault
IGBT short circuit detection circuit fault
The drive is damaged
LED Display LCD Display
5Er
Cause
Parameters related to Speed Search are set to
the wrong values
The motor is coasting in the opposite
direction of the Run command
LED Display LCD Display
T1 E
Cause
An error has occurred in the Real-Clock Time
function of the HOA keypad.
LED Display LCD Display
vl3
Cause
Parameter settings are not appropriate for the
load
There is a fault on the machine side
LED Display LCD Display
vl4
Cause
Parameter settings are not appropriate for the
load
There is a fault on the machine side
LED Display LCD Display
vl6
Underload Det 6
Cause
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
Dynamic Braking Transistor
rr
The built-in dynamic braking transistor failed.
• Cycle power to the drive and check for reoccurrence of the fault.
• Replace the drive.
IGBT Short Circuit or Ground Fault
SC
• 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.
• 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.
Too Many Speed Search Restarts
SEr
The number of Speed Search restarts exceeded the value set to b3-19.
• 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.
Set b3-14 to 1 to enable Bi-Directional Speed Search.
Time Interval Error
TIE
Replace the HOA keypad. For instructions on replacing the HOA keypad, contact Yaskawa or your nearest
sales representative.
Undertorque Detection 1
The current has fallen below the minimum value set for torque detection (L6-02) for longer than the
UL3
allowable time (L6-03).
Check the settings of parameters L6-02 and L6-03.
Check the load for any problems.
Undertorque Detection 2
The current has fallen below the minimum value set for torque detection (L6-05) for longer than the
UL4
allowable time (L6-06).
Check L6-05 and L6-06 settings
Check the load for any problems.
Motor Underload
UL6
The load has fallen below the underload curve defined in L6-14.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
6.3 Fault Detection
6
265