Mitsubishi Electric FR-A700 Technical Manual page 402

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2.21.2 Operation command source and frequency command source [Pr. 338, 339, 550*,
common
551]
(common)
When the RS-485 terminals or communication option is
used, the external operation command and speed
command can be valid.
[Pr.]
Name
Communication
338
operation command
source
Communication
339
speed command
source
NET mode operation
command source
550
*
selection
PU mode operation
551
command source
*
selection
The above parameters can be set whenever the communication option is connected.
* [Pr. 550, Pr. 551] are always write-enabled. Changed setting value is valid when powering ON or resetting the inverter.
(1) Command
source
Network
operation
550]
A700 F700 E700
Command source in the Network operation mode can
be RS-485 terminal (
or a communication option.
For example, set [Pr. 550 =1] in
485 terminal to write parameters and to send start
and frequency commands whether a communication
option is connected or not.
In the initial setting, [Pr.550 =9999] (automatic
communication option recognition) is set. When a
communication option is installed in that initial
setting,
parameter
commands cannot be sent using RS-485 terminal
(
)/PU connector (
A700 F700
parameter read can be performed.
(2) Command source selection for the PU
operation mode [Pr. 551]
Any of PU connector, RS-485 terminal (
USB connector (
A700 E700
source of control in the PU operation mode. Set [Pr.
551=1] when writing parameters and sending start and
frequency commands by the communication from RS-
Initial
Setting
Value
Range
0
Operation command source communication
0
1
Operation command source external
0
Speed command source communication
Speed command source external (Frequency setting from
1
communication is invalid, terminal 2 and 1 setting from external is
0
valid)
Speed command source external (Frequency setting from
2
communication is valid, terminal 2 and 1 setting from external is
invalid)
0
Communication option is valid
1
RS-485 terminals are valid
PU connector is the command source when NET operation
2
9999
mode.
Automatic communication option recognition
9999
Normally, the RS-485 terminals are valid. When a communication
option is mounted, the communication option is valid.
Selects RS-485 terminal as the PU operation mode command
1
source.
Selects the PU connector as the PU operation mode command
2
A700
source.
Selects the USB connector as the PU operation mode command
F700
3
2
source.
4
Operation panel is the command source when PU operation mode.
E700
USB
E700
D700
automatic recognition
9999
9999
Normally, operation panel is the command source. When the parameter
unit is connected to the PU connector, PU is the command source.
When USB is connected, USB connector is the command source.
selection
for
mode
)/PU connector (
A700 F700
when using RS-
A700
write,
start
and
frequency
). (Monitoring and
E700
A700 F700
)can be assigned as the
Also, the operation command source in the PU operation
mode can be selected.
Description
/ parameter unit
D700
the
485 terminal in the PU operation mode (
[Pr.
[Pr. 551=3] when sending these commands from USB
connector (
PU operation mode has priority over other control
modes when [Pr. 550 =1] (NET mode with RS-485
)
terminal) or [Pr. 551 =1] (PU mode with RS-485
E700
terminal) in
mode with PU connector) or [Pr. 551 =2] (PU mode with
PU connector) in
cannot be switched to the Network operation mode
when a communication option is not installed.
The initial setting in
(automatic USB/PU connector recognition). Therefore,
parameter write, start and frequency commands cannot
be sent from an operation panel when using USB or
parameter unit. (Monitoring and parameter read can be
performed.)
Also, PU connector cannot be the command source for
the PU operation mode when RS-485 communication is
performed from the PU connector while [Pr. 551 =9999].
Change to NET mode for changing the command
source.
), or
436
PARAMETER
(*[Pr. 550] is not available for
Available Inverters
A700 F700 E700 D700
).
A700 E700
and when [Pr. 550 =2] (NET
A700 F700
. Therefore, the operation mode
E700
is [Pr. 551 =9999]
E700 D700
.)
D700
). Set
A700 F700

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