YASKAWA FSDrive-MV1000 Series - Page 168

5.5 Alarm Detection
168 YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
Digital Operator Display Minor Fault Name
rUn
Motor Switch during Run
A command to switch motors was entered during run.
Cause Possible Solutions
Minor Fault Output
H2-=10
A motor switch command was entered during
run.
Change the operation pattern so the motor switch command is entered
while the drive is stopped.
Yes
Digital Operator Display Minor Fault Name
SE
MEMOBUS/Modbus Communication Test Mode Error
A digital input set to 67H (MEMOBUS/Modbus test) was closed while the drive was running.
Cause Possible Solutions
Minor Fault Output
H2-=10
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive was
running.
Stop the drive and run the test again. Yes
Digital Operator Display Minor Fault Name
TMA1
Transformer Temperature Fault
The temperature of the transformer has increased and has exceeded the protection level set to
L8-87.
Cause Possible Solution
Minor Fault Output
H2-=10
Cooling fan fault possibly caused by inadequate
airflow.
If the cooling airflow is inadequate, replace the cooling fan.
Yes
The intake filter is soiled. Clean the intake filter.
Parameter setting error Check the parameter settings.
Thermistor fault and disconnected signal line
If the problem occurs at a low temperature, for example immediately after
applying power, contact Yaskawa or your nearest sales representative.
Digital Operator Display Minor Fault Name
UL3
Undertorque Detection 1
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) has fallen below the value
set to L6-02 for longer than the time set to L6-03.
Cause Possible Solutions
Minor Fault Output
H2-=10
Inappropriate parameter settings Check parameters L6-02 and L6-03.
Yes
Fault on the machine side
Example: If there is undertorque, the pulley belt
may be broken.
Check the status of the machine. Remove the cause of the fault.
Digital Operator Display Minor Fault Name
UL4
Undertorque Detection 2
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) has fallen below the value
set to L6-05 for longer than the time set to L6-06.
Cause Possible Solutions
Minor Fault Output
H2-=10
Inappropriate parameter settings Check parameters L6-05 and L6-06.
Yes
Fault on the machine side
Example: If there is undertorque, the pulley belt
may be broken.
Check the status of the machine. Remove the cause of the fault.
Digital Operator Display Minor Fault Name
UL5
Mechanical Weakening Detection 2
The operation conditions matched the conditions set to L6-08.
Cause Possible Solutions
Minor Fault Output
H2-=10
Undertorque was detected and matched the
conditions for mechanical loss detection set to
L6-08.
Check the load side for any problems. Yes