Mitsubishi FR-A800

(D) Operation command and frequency command
PARAMETERS
315
5
GROUP
D
5.9.2 Startup in Network operation mode at power-ON
Selecting the operation mode for power-ON (Pr.340)
• Depending on the Pr.79 and Pr.340 settings, the operation mode at power-ON (reset) changes as described below.
 Use Pr.340="2 or 12" setting to perform communication with the RS-485 terminals.
Even if an instantaneous power failure occurs while Pr.57 Restart coasting time  "9999" (with automatic restart after instantaneous power
failure), inverter continues operation at the condition before the instantaneous failure.
 The operation mode cannot be directly changed between the PU operation mode and Network operation mode.
 Switching between the PU and NET operation modes is available with the key on the operation panel and the X65 signal.
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Parameters referred to
Pr.57 Restart coasting time page 528, page 534
Pr.79 Operation mode selection page 306
When power is switched ON or when power comes back ON after an instantaneous power failure, the inverter can be
started up in the Network operation mode. After the inverter starts up in the Network operation mode, parameter writing
and operation can be commanded from programs.
Set this mode when performing communication operation using the RS-485 terminals or a communication option.
Pr. Name
Initial
value
Setting
range
Description
79
D000
Operation mode selection
0 0 to 4, 6, 7
Selects the operation mode.
(Refer to page 306.)
340
D001
Communication startup
mode selection
0
0 Follows the Pr.79 setting.
1, 2
The inverter starts up in the Network operation mode.
If an instantaneous power failure occurs when "2" is set, the operating
status before the instantaneous power failure is maintained.
10, 12
The inverter starts up in the Network operation mode. The operation
mode can be changed between the PU operation mode and Network
operation mode from the operation panel.
If an instantaneous power failure occurs when "12" is set, running is
continued at the condition before the instantaneous power failure.
Pr.340
setting
Pr.79
setting
Operation mode at power-ON, at power res-
toration, or after a reset
Operation mode switching
0
(initial
value)
0(initial
value)
External operation mode
Switching among the External, PU, and NET operation
modes is enabled.

1 PU operation mode PU operation mode fixed
2 External operation mode
Switching between the External and NET operation modes
is enabled.
Switching to PU operation mode is disabled
3, 4 External/PU combined operation mode Operation mode switching is disabled
6 External operation mode
Switching among the External, PU, and NET operation
mode is enabled while running.
7
X12 (MRS) signal ON External operation mode
Switching among the External, PU, and NET operation
modes is enabled.

X12 (MRS) signal OFF External operation mode
External operation mode fixed. (Forcibly switched to
External operation mode.)
1, 2

0 NET operation mode
Same as Pr.340="0" setting
1 PU operation mode
2
NET operation mode
3, 4 External/PU combined operation mode
6
NET operation mode
7
X12(MRS) signal ON NET operation mode
X12 (MRS) signal OFF External operation mode
10, 12

0 NET operation mode
Switching between the PU and NET operation mode is
enabled

1 PU operation mode Same as Pr.340="0" setting
2
NET operation mode NET operation mode fixed
3, 4 External/PU combined operation mode Same as Pr.340="0" setting
6
NET operation mode
Switching between the PU and NET operation mode is
enabled while running.

7 External operation mode Same as Pr.340="0" setting