Mitsubishi Electric GT15, Connection Manual

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15. INVERTER CONNECTION
15.5 FREQROL Series Inverter Side Settings
15.5.10 Connecting FREQROL-A700 series

Communication settings
Make the communication settings of the inverter.
Be sure to perform the inverter reset after updating each parameter.
(1) Communication port and corresponding parameters
(2) Communication settings of inverter
Set the following parameters using the PU (parameter unit).
Do not change these parameters, even though they can be monitored from the GOT. If they are changed,
communication with the GOT is disabled.
*1 Setting items are parameter names described in the manual of FREQROL-A700 series.
*2 Settings on the GOT can be changed.
When changing the settings on the GOT, be sure to change the parameters on the inverter to correspond with the GOT settings.
*3 Inverter default values (No need to change)
*4 Since the value has been set as a default, no setting is required when connecting to the PU connector on the inverter side.
GOT connection
destination
Parameters corresponding to inverter
PU connector Pr.79, Pr.117 to Pr.124, Pr.340, Pr.342
RS-485 terminal Pr.79, Pr.331 to Pr.337, Pr.340 to Pr.342, Pr.549
Setting item
*1
Parameter No.
Set value Contents of setting
PU connector RS-485
PU communication station number/RS-485
communication station number
Pr.117 Pr.331 0 to 31
15.5.14 Station number
setting
PU communication speed/RS-485
communication speed
*2
Pr.118 Pr.332
192
*4
19200bps
PU communication stop bit length/
RS-485 communication stop bit length
*2
Pr.119 Pr.333 10
Data length: 7bit
Stop bit length: 1bit
PU communication parity check/
RS-485 communication parity check
*2
Pr.120 Pr.334 1 Odd
Number of PU communication retries/
RS-485 communication retry count
Pr.121 Pr.335 9999
The inverter will not come to an
alarm stop.
PU communication check time interval/
RS-485 communication check time interval
Pr.122 Pr.336
9999
*4
Communication check
suspension
PU communication waiting time setting/
RS-485 communication waiting time setting
Pr.123 Pr.337 0 0ms
PU communication CR/LF selection/
RS-485 communication CR/LF selection
Pr.124 Pr.341
1
*3
With CR, without LF
Protocol selection ― Pr.549
0
*3
Mitsubishi Electric inverter
protocol
Operation mode selection Pr.79
PU
connector
1 PU operation mode
RS-485
0
*3
External operation mode at
power on
Communication startup mode selection Pr.340
PU
connector
0
*3
Refer to Pr.79 settings.
RS-485 1 Network operation mode.
Communication EEPROM write selection Pr.342
0
*3
Written to RAM and EEPROM