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Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual Page 136

Transistorized inverter, high function & low acoustic noise.
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( 5 ) Communication specifications for RS-485 communication
Operation Location
Run command (start)
Running frequency setting
Computer user program via
Monitoring
PU connector
Parameter write
Parameter read
Inverter reset
Stop command (*3)
Run command
Running frequency setting
Monitoring
Computer user program via
Parameter write
inboard option
Parameter read
Inverter reset
Stop command (*3)
Inverter reset
Control circuit terminal
Run command
Running frequency setting
(*1) As set in the operation and speed command write 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.
( 6 ) Operation at alarm occurrence
Fault Location
Description
Inverter operation
Inverter fault
Communication
Communication
Inverter operation
error
(Communication
Communication
from PU connector)
Inverter operation
Communication
error
Communication
(Inboard option)
(*5) Can be selected using the corresponding parameter (factory-set to continue)
(*6) Can be selected using the corresponding parameter (factory-set to stop)
( 7 ) Communication error
Fault Location
Communication error
(Communication from PU connector)
Communication error
(Inboard option)
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Communication
Item
Operation from PU
Connector
Enable
Enable
Enable
Enable (*4)
Enable
Enable
Enable
Disable
Disable
Enable
Disable (*4)
Enable
Disable
Enable
Enable
Disable
Disable
Communication
Operation
(PU connector)
Stop
PU connector
Continued
Inboard option
Continued
Stop/continued (*5)
PU connector
Stop
Inboard option
Continued
Continued
PU connector
Continued
Inboard option
Stop
Error Message
E.PUE
E.OP1 to E.OP3
123
PARAMETERS
Operation Mode
External
Computer Link Operation
Operation
(inboard option used)
Disable
Disable
Enable
(Combined
Disable
mode)
Enable
Enable
Disable (*4)
Disable (*4)
Enable
Enable
Enable
Enable
Enable
Enable
Disable
Enable (*1)
Disable
Enable (*1)
Enable
Enable
Disable (*4)
Enable (*4)
Enable
Enable
Disable
Enable
Enable
Enable
Enable
Enable
Enable
Enable (*1)
Enable
Enable (*1)
Operation Mode
Computer link Operation
External Operation
(inboard option used)
Stop
Stop
Continued
Continued
Continued
Continued
Continued
Continued
Stop
Stop
Continued
Continued
Continued
Stop/continued (*6)
Continued
Continued
Stop
Stop

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