How To Check For Error Using The Leds - Mitsubishi FR-E520-0.1KN Instruction Manual

5.1.6 How to Check for Error using the LEDs

(1) When one inverter is connected
The following example indicates the causes of faults which may be judged from the
operating status indicator LED states of the inverter under the condition that the
SW, M/S and PRM LEDs of the master unit are off (the master unit setting is
correct) in the system configuration where one inverter is connected.
LED States
L. RUN SD RD
!
" "
!
" "
!
" #
!
" #
!
# "
!
# "
!
# #
!
# #
# " "
# " "
# " #
# " #
# # "
# # "
# # #
# # #
# # "#
!
" "
# # #
Power CPU Master
supply unit
L. ERR
Normal communication is made but CRC error has
"
occurred due to noise.
#
Normal communication
"
Hardware fault
#
Hardware fault
"
Cannot answer due to CRC error of receive data.
#
Data sent to the host station does not reach destination.
"
Hardware fault
#
Hardware fault
Polling response is made but refresh receive is in CRC
"
error.
#
Hardware fault
"
Hardware fault
#
Hardware fault
"
Data sent to the host station is in CRC error.
There is no data sent to the host station, or data sent to
#
the host station cannot be received due to noise.
#
Hardware fault
#
Cannot receive data due to open cable, etc.
!
Invalid baud rate or station number setting
"
Baud rate or station number changed during operation.
WDT error occurrence (hardware fault), power off, power
!
supply failure
149
PROTECTIVE FUNCTIONS
Station 1
Inverter
Cause
!
: On, #: Off, ": Flicker
5