YASKAWA GPD315/V7-4X Technical Manual page 117

Table 6-1. Alarm Displays and Corrective Actions - Continued
Alarm Display
Digital RUN (Green)
Operator ALARM (Red)
Blinking
Blinking
or
Blinking
Blinking
Blinking
(Note 1)
Drive
Explanation
Status
BB (External baseblock)
Baseblock command at
multi-function terminal is
active, the drive output
is shut OFF (motor coasting).
Temporary condition is
cleared when input command
is removed.
EF (Simultaneous FWD/
REV run commands)
When FWD and REV
run commands are
simultaneously input
for over 500ms, the
drive stops according
to parameter n005.
Warning
only. STP (Operator function
Fault stop)
contacts
is pressed
do not
change during running by the
state. control circuit terminals
FWD / REV command.
The drive stops according
to parameter n005.
STP (Emergency stop)
Drive receives emergency
stop alarm signal.
Drive stops according
to parameter n005.
Protective When under torque is
operation. detected, drive performs
Output is operation according to the
shut OFF preset setting of constant
and motor n117.
coasts to
a stop.
FAN (Cooling fan fault)
Cooling fan is locked.
Warning. UL3 (Under torque detection)
Fault
contacts do
not change
state.
V/f mode: Drive output
current fell below the preset
value in parameter n118.
Vector mode: Motor current
or torque fell below the
preset value in parameter
n097 and n118.
Protective GF (Ground Fault)
operation. The ground fault current at
Output is the drive output exceeded
shut OFF approximately 50% of the
and motor inverter rated output current.
coasts to
a stop.
6-3
Causes and
Corrective Actions
Check the external circuit
(sequence).
Check the external circuit
(sequence).
Open FWD/REV
command of control
circuit terminals.
Check the external circuit
(sequence).
Parameter n118 up to the
lowest value allowed for
the machine.
Check the following:
• Cooling fan
• Cooling fan wiring is not
connected.
Load (output current or
output torque) is too low.
Check the driven machine
and correct the cause of
the fault, or decrease the
value of parameter n118
A Ground Fault occurred
at the Inverter Output.
Reset fault after correcting
its causes.