Mitsubishi Electric FR-A820-00046 Instruction Manual page 458

(D) Operation command and frequency command
Operation at fault
Conditions
Fault record
(Pr. 551 setting)
⎯
Inverter fault
2 (PU connector)
9999 (automatic
PU connector
recognition)
disconnection
Other than 2
Communication
2 (PU connector)
error at PU
connector
Other than 2
1 (RS-485
Communication
terminals)
error at RS-485
terminals
Other than 1
3 (USB connector)
Communication
9999 (automatic
error at USB
recognition)
connector
Other than 3
Communication
error at
⎯
communication
option
Tab. 5-110: Operation at fault
Selectable with Pr. 75 "Reset selection/disconnected PU detection/PU stop selection"
Selectable with Pr. 122 "PU communication check time interval", Pr. 336 "RS-485 communication
check time interval", and Pr. 548 "USB communication check time interval"
Follows the communication option
In the PU JOG operation mode, operation always stops when the PU is disconnected. The operation
of PU disconnection (E.PUE) follows the Pr. 75 "Reset selection/disconnected PU detection/PU stop
selection" setting.
When Pr. 550 "NET mode operation command source selection" = "1" (RS-485 terminals enabled),
or Pr. 550 "NET mode operation command source selection" = "9999" with no communication
option connected.
When Pr. 550 "NET mode operation command source selection" = "0" (communication option
enabled), or Pr. 550 "NET mode operation command source selection" = "9999" with communica-
tion option connected.
5 - 278
Operation in each operation mode at error occurrences
PU External
operation operation
Stop/continued
Continued
Stop/continued
Continued
Continued
Stop/continued
External/PU External/PU
combined combined
operation operation
mode 1 mode 2
(Pr. 79 =3) (Pr. 79 =4)
Stop
Stop/continued
Stop/continued
Stop/
continued
Continued
Stop/
continued
Continued
Continued
Continued
Parameters
NET
NET operation
operation
(when
(when RS-485
communication
terminals are
option is used)
used)
Continued
Continued
Stop/continued
Continued
Stop/continued