YASKAWA V7 Technical Manual page 118

Table 6-2. Fault Displays and Corrective Actions - Continued
Fault Display
Digital RUN (Green)
Operator ALARM (Red)
__
(OFF)
Note 1: This fault display only available on drive model numbers CIMR-V7AM25P51, 27P51, 45P51, and 47P51
(MVA025, MVA033, MV015, and MVB018). All other drive ratings display "0L" when a ground fault
condition occurs.
Drive
Status
or
Stops
according to
parameter
For display/clear of fault history, refer to page 6-8.
Explanation
STP (Emergency stop)
The drive stops
according to parameter
n005 after receiving the
emergency stop fault
signal.
FBL (PID feedback loss
detection)
PID feedback value drops
below the detection level.
When PID feedback loss is
detected, the Drive operates
according to the n136 setting.
Option card
communications fault
Communication fault has
occurred in a mode that
run command and
frequency reference are
set from the communication
option card.
• Insufficient power
supply voltage
• Control power supply
fault
• Hardware fault
6-8
Causes and
Corrective Actions
Check the external circuit
(sequence).
Check the mechanical
system and correct the
cause, or increase the
value of n137.
Check the
communication devices
or communication
signals for noise and
power supply.
Check the following:
• Power supply voltage
• Main circuit power
supply wiring is
connected.
• Terminal screws are
securely tightened.
• Control sequence.
Replace the drive.