YASKAWA FSDrive-MV1000 Instructions Manual page 137

Digital Operator Display
SE
Cause
A digital input set to 67H (MEMOBUS/
Modbus test) was closed while the drive was
running.
Digital Operator Display
TMA1
Cause
Cooling fan fault
The intake filter is soiled.
Parameter setting error
Thermistor fault and disconnected signal line
Digital Operator Display
UL3
Cause
Inappropriate parameter settings.
Fault on the machine side.
Example: If there is undertorque, the pulley
belt may be broken.
Digital Operator Display
UL4
Cause
Inappropriate parameter settings.
Fault on the machine side.
Example: If there is undertorque, the pulley
belt may be broken.
Digital Operator Display
UL5
Cause
Undertorque was detected and matched the
conditions for mechanical loss detection set to
L6-08.
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions
MEMOBUS/Modbus Communication Test Mode Error
A digital input set to 67H (MEMOBUS/Modbus test) was closed while the drive was
running.
Possible Solutions
⇒Stop the drive and run the test again.
Transformer Temperature Fault
The temperature of the transformer has increased and has exceeded the protection level set
to L8-87.
Possible Solution
⇒If the cooling airflow is inadequate, replace the cooling fan.
⇒If the intake filter is soiled, clean it.
⇒Check the parameter settings.
⇒If the problem occurs even at a low temperature, for example
immediately after switching on the power, contact Yaskawa or your
nearest sales representative.
Undertorque Detection 1
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) less than L6-02 for
longer than L6-03 time.
Possible Solutions
⇒Check parameters L6-02 and L6-03.
Check the status of the machine.
⇒Remove the cause of the fault.
Undertorque Detection 2
Drive output current (or torque in OLV, CLV, AOLV/PM, CLV/PM) less than L6-05 for
longer than L6-06 time.
Possible Solutions
⇒Check parameters L6-05 and L6-06.
Check the status of the machine.
⇒Remove the cause of the fault.
Mechanical Weakening Detection 2
The operation conditions matched the conditions set to L6-08.
Possible Solutions
Check the load side for any problems.
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
5.5 Alarm Detection
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
Minor Fault
Output
H2- =10
Yes
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