Mitsubishi Electric FR-A520-2.2K Instruction Manual page 136

( 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