Fuji Electric FVR-C11S-7EN Series - Page 64

6-2 6 Protective Function
FVR-C11S-EN
6
Table 6-1-1 List of Protective Functions
Alarm Name
Ke
y
pad
panel
displa
y
Contents of operation
External Alarm OH2
If the control circuit terminal THR (functional chan
g
e of X1 to X3 ter-
minals) is set to OFF, an alarm is issued and the inverter is tripped.
Motor
overload
OL
If the motor current exceeds the operatin
g
level set b
y
the electronic
thermal O/L rela
y
, output is shut down to protect the motor, an alarm
is issued, and the inverter is tripped.
Inverter
overload
OLU
If the output current exceeds the inverter rated overload current, out-
put is shut down, an alarm is issued, and the inverter is tripped.
Memor
y
Error Er1
If memor
y
error occurs, such as a missin
g
or invalid data, output is
shut down, an alarm is issued , and the inverter is tripped.
CPU Error Er3
If CPU error occurs because of noise, etc., output is shut down, an
alarm is issued , and the inverter is tripped.
RS485
Communica-
tion
Error
Er8
If an error occurs in serial communication via the RS485, output is
shut down, an alarm is issued , and the inverter is tripped. For further
details, refer to the instruction manual for RS485 communication
cards.