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Communication Specifications For Rs-485 Communication; Operation At Alarm Occurrence; Communication Error - Mitsubishi Electric FR-A500 Instruction Manual

Transistorized inverter.
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(6) Communication specifications for RS-485 communication

Operation Location
Computer user program via
PU connector
Computer user program via
plug-in option
Control circuit terminal
(*1) As set in the operation and speed command source parameters.
(*2) At occurrence of RS-485 communication fault, the inverter cannot be reset from the computer.
(*3) As set in Pr. 75.
(*4) As set in Pr. 77.

(7) Operation at alarm occurrence

Fault Location
Inverter operation
Inverter fault
Communication
Inverter operation

Communication error

(communication from
Communication
PU connector)
Inverter operation
Communication error
(plug-in option)
Communication
(*5) Can be selected using the corresponding parameter (factory-set to continue)
(*6) Can be selected using the corresponding parameter (factory-set to stop)
(8) Communication error
Fault Location
Communication error (communication error
from PU connector)
Option fault
(communication line fault)
Communication error
(plug-in option fault)
Item
Run command (start)
Running frequency setting
Monitoring
Parameter write
Parameter read
Inverter reset
Stop command (*3)
Run command
Running frequency setting
Monitoring
Parameter write
Parameter read
Inverter reset
Stop command (*3)
Inverter reset
Run command
Running frequency setting
Status
PU connector
Plug-in option
PU connector
Plug-in option
PU connector
Plug-in option
Error Message
E.PUE
E.OP1 to E.OP3
E. 1 to E. 3
Communication
External
Operation from PU
Operation
Connector
Enabled
Disabled
Enabled
Enabled
(Combined
operation mode)
Enabled
Enabled
Enabled (*4)
Disabled (*4)
Enabled
Enabled
Enabled (*2)
Enabled (*2)
Enabled
Enabled
Disabled
Disabled
Disabled
Disabled
Enabled
Enabled
Disabled (*4)
Disabled (*4)
Enabled
Enabled
Disabled
Disabled
Disabled
Disabled
Enabled
Enabled
Disabled
Enabled
Disabled
Enabled
Communication
Operation
(PU connector)
Stop
Continued
Continued
Stop/continued (*5)
Stop
Continued
Continued
Continued
Stop
136
PARAMETERS
Operation Mode
Computer Link Operation
(plug-in option used)
Disabled
Disabled
Enabled
Disabled (*4)
Enabled
Enabled (*2)
Enabled
Enabled (*1)
Enabled (*1)
Enabled
Enabled (*4)
Enabled
Enabled (*2)
Enabled
Enabled
Enabled (*1)
Enabled (*1)
Operation Mode
Computer link
External
Operation
Operation
(plug-in option used)
Stop
Continued
Continued
Continued
Continued
Continued
Continued
Stop
Continued
Continued
Continued
Stop/continued (*6)
Continued
Continued
Stop
Stop
Stop
Stop

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