Communication Operation - Mitsubishi Electric FR-A700 Technical Manual

2.21 Communication operation

2.21.1 Operation mode selection [Pr. 79, 340]
When power is switched on or when power comes back on after instantaneous power failure, the inverter can be started up in
the Network operation mode. After the inverter has started up in the Network operation mode, parameter write and operation
can be performed from a program. Set this mode for communication operation using the inverter RS-485 terminals or
communication option.
Initial
[Pr. ]
Name
Value
Operation mode
79
selection
Communication
340 startup mode
*1
selection
The above parameters can be changed during a stop in any operation mode.
*1 However, the parameters can be set whenever the communication option is connected. Changed setting value is valid when
powering on or resetting the inverter.
(1) Operation mode at power-on [Pr. 340]
Depending on the [Pr. 79] and [Pr. 340] settings, the operation mode at power-ON (reset) changes as described below.
[Pr. 340] [Pr. 79] Operation Mode at Power ON
Setting Setting or Power Restoration or Reset
0
(initial External operation mode
value)
1 PU operation mode
2 External operation mode
0
3, 4 External/PU combined operation mode
(initial
value)
6 External operation mode
X12 (MRS) signal ON
operation mode
7
X12 (MRS) signal OFF
operation mode
0 NET operation mode
1 PU operation mode
2 NET operation mode
3, 4 External/PU combined operation mode
1, 2
*1 6 NET operation mode
X12 (MRS) signal ON
operation mode
7
X12 (MRS) signal OFF
operation mode
0 NET operation mode
1 PU operation mode
2 NET operation mode
10, 12
*1
3, 4 External/PU combined operation mode
6 NET operation mode
7 External operation mode
*1 Setting values 2 and 12 for [Pr.340] are available only for
operation with RS-485 terminal. When [Pr. 57 Restart coasting time
selected) , the inverter will resume the same operation state which was in before after power has been restored from an
instantaneous power failure.
*2 The operation mode cannot be switched directly between the PU operation mode and Network operation mode.
*3 Operation mode can be changed between the PU operation mode and Network operation mode with
panel (PU07) and X65 signal.
Setting
Range
0 to 4, 6, Select the operation mode.
0
7 (Refer to page 209)
0 As set in [Pr. 79].
1
Started in network operation mode.
When the setting is 2, it will resume the pre-instantaneous power failure
operation mode after an instantaneous power failure occurs.
0 2
Started in network operation mode. Operation mode can be changed between
10
the PU operation mode and Network operation mode from the operation panel.
When the setting is 12, it will resume the pre-instantaneous power failure
12
operation mode after an instantaneous power failure occurs.
External
External
NET
External
common
(common)
Description
Operation Mode Switching
Switching among the External, PU, and NET operation mode is enabled
PU operation mode fixed
Switching between the External and NET operation mode is enabled
Switching to PU operation mode is disabled
Operation mode switching is disabled
Switching among the External, PU, and NET operation mode is enabled while
running
Switching among the External, PU, and NET operation mode is enabled
Fixed to External operation mode (forcibly switched to external operation mode)
Same as when [Pr. 340 = 0]
Switching between the PU and NET operation mode is enabled
Same as when [Pr. 340 = 0]
Fixed to NET operation mode
Same as when [Pr. 340 = 0]
Switching between the PU and NET operation mode is enabled while running
Same as when [Pr. 340 = 0]
. These setting values are mainly used in a communication
A700 F700
9999] (automatic restart after instantaneous power failure is
434
PARAMETER
Available
Inverters
A700 E700
F700 D700
—
—
*2
*2
*3
*3
key of the control