YASKAWA FSDrive-MV1000 Series Instructions For Use Manual page 168

5.5 Alarm Detection
Digital Operator Display
rUn
Cause
A motor switch command was entered during
run.
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 possibly caused by inadequate
airflow.
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.
168
Motor Switch during Run
A command to switch motors was entered during run.
Possible Solutions
Change the operation pattern so the motor switch command is entered
while the drive is stopped.
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.
Clean the intake filter.
Check the parameter settings.
If the problem occurs at a low temperature, for example immediately after
applying power, contact Yaskawa or your nearest sales representative.
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.
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) has fallen below the value
set to L6-05 for longer than the time set to L6-06.
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.
YASKAWA ELECTRIC TOEP C710687 02B FSDrive-MV1000 Instructions
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
Minor Fault Name
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
Minor Fault Output
H2- =10
Yes