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Mitsubishi Electric FR-E520 Instruction Manual Page 157

Transistorized inverter.
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(5) Communication specifications for RS-485 communication
Operation
Location
Run command (start)
Running frequency setting Enabled
Computer
user program
Monitoring
via PU
Parameter write
connector
Parameter read
Inverter reset
Stop command (*1)
Inverter reset
Control circuit
Run command
terminal
Running frequency setting Disabled
*1. As set in Pr. 75 "reset selection/disconnected PU detection/PU stop selection".
*2. As set in Pr. 77 "parameter write disable selection".
Note: At occurrence of RS-485 communication fault, the inverter cannot be reset from
the computer.
(6) Operation at alarm occurrence
Fault Location
Inverter fault
Communication error
(Communication from
PU connector)
*3. Can be selected using the corresponding parameter (factory-set to stop).
(7) Communication error
Fault Location
Communication error
(Error in communication from PU connector)
Item
Enabled
Enabled
Enabled (*2)
Enabled
Enabled
Enabled
Enabled
Disabled
Status
Inverter operation
Communication
PU connector
Inverter operation
Communication
PU connector
147
Operation Mode
Communication
Operation from PU
Connector
Communication
Operation
(PU connector)
Stop
Continued
Stop/continued (*3)
Stop
Error Message
Not displayed
Error code is E.PUE
PARAMETERS
External Operation
Disabled
Enabled
(Combined operation
mode)
Enabled
Disabled (*2)
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Operation Mode
External
Operation
Stop
Continued
Continued
Stop
Remarks
4

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