Instruction manual

87
Details of Troubleshooting
3
SETTING WIZARD
3.4.9 Unable to communicate
• Causes related to serial port
• Causes related to serial communication
Cause Measures
Related
Parameters
Communication port setting of the PC and
FR Configurator SW3 are not the same.
Select [O
ptions] in [Tool] menu. Select [Communication] tab on the
option window and check the following items.
(1) Check "RS-232C" is selected for "PC Side P
ort".
(2) Check that the COM port number of the personal computer and
"Po
rt Number" setting are the same.
(3) Check that the "Th
rough" setting is "None".
When connecting through the GOT
(4) Check that the "Th
rough" setting is "GOT".
-
Cause Measures
Related
Parameters
Parameter setting for PU connector
communication is not an appropriate value.
(1) Check that the correct station number is set for PU communication
station number (Pr. 117) . When multiple inverters are connected, set
a different station number for each inverter.
(2) Set 3s or more, or "9999" in PU communication check time
interval(Pr. 122).
(3) Set "9999" in PU communication waiting time setting (Pr. 123) .
(4) Select [O
ptions] in [Tool] menu, and click [Communication] tab on
the option window. Check that the "C
ommunication Speed", "Stop
Bit", "Delimit
er", and "Parity" settings are the same as the parameter
setting for PU connector communication (Pr. 118, 119, 120, 124).
(5) Select [O
ptions] in [Tool] menu. Click [Communication] tab on the
option window and press [Ad
vanced]. Increase the value of
"TimeOut" and "R
etry Count".
(6) Set "0" in protocol selection (Pr. 549) .
Pr. 117, 118, 119,
120, 121, 122, 123,
124, 549
Parameter setting for RS-485 terminal
communication is not an appropriate value.
(1) Check that the correct station number is set for RS-485
communication station number (Pr. 331) . When multiple inverters
are connected, set a different station number for each inverter.
(2) Set 3s or more, or "9999" in RS-485 communication check time
interval(Pr. 336) .
(3) Set "9999" in RS-485 communication waiting time setting (Pr. 337) .
(4) Select [O
ptions] in [Tool] menu, and click [Communication] tab on
the option window. Check that the "C
ommunication Speed", "Stop
B
it", "Delimiter", and "Parity" settings are the same as the parameter
setting for RS-485 terminal communication (Pr. 332, 333, 334, 341).
(5) Select [O
ptions] in [Tool] menu. Click [Communication] tab on the
option window and press [Ad
vanced]. Increase the value of
"T
imeOut" and "Retry Count".
(6) Set "0" in protocol selection(Pr. 549) .
Pr. 331, 332, 333,
334, 335, 336, 337,
341, 549