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Conditions
Command
(Pr.551
interface
setting)
External
control
circuit
terminal
○: Valid, ×: Invalid, ∆: Partially valid
*1
RS-485 communication via PU connector
*2
Follows the Pr.338 Communication operation command source and Pr.339 Communication speed command source settings. (Refer to
page
239.)
*3
At occurrence of RS-485 communication error, the inverter cannot be reset from the computer.
*4
Only PU stop is enabled. "PS" is displayed on the operation panel during PU stop. Follows the Pr.75 Reset selection/Disconnected PU
detection/PUStop selection setting. (Refer to
*5
Writing of some parameters may be disabled by the Pr.77 Parameter write selection setting and the operating condition. (Refer to
*6
Some parameters are write-enabled independently of the operation mode and command source presence/absence. Writing is also enabled when
Pr.77 = "2"
(refer to
page
*7
When Pr.550 NET mode operation command source selection = "1" (RS-485 terminals enabled), or Pr.550 NET mode operation command
source selection = "9999" with no communication option connected.
*8
When Pr.550 NET mode operation command source selection = "0" (communication option enabled), or Pr.550 NET mode operation
command source selection = "9999" with communication option connected.
 Operation when a communication error occurs
Fault type
Inverter fault
PU connector
disconnection
Communication error
at PU connector
Communication error
at RS-485 terminals
Communication error
at USB connector
Communication error
at communication
option
*1
Selectable with Pr.75 Reset selection/disconnected PU detection/PU stop selection.
*2
Selectable with Pr.122 PU communication check time interval, Pr.336 RS-485 communication check time interval, and Pr.548 USB
communication check time interval.
*3
The operation depends on the communication option setting.
*4
In the PU JOG operation mode, operation always stops when the PU is disconnected. The operation of PU disconnection (E.PUE) follows the
Pr.75 Reset selection/Disconnected PU detection/PUStop selection setting.
*5
When Pr.550 NET mode operation command source selection = "1" (RS-485 terminals enabled), or Pr.550 NET mode operation command
source selection = "9999" with no communication option connected.
*6
When Pr.550 NET mode operation command source selection = "0" (communication option enabled), or Pr.550 NET mode operation
command source selection = "9999" with communication option connected.
242
5. PARAMETERS
5.6 (D) Operation command and frequency command
Item
PU
operation
Inverter reset
Operation command
×
(start, stop)
Frequency setting
×
196). Parameter clear is disabled.
Conditions (Pr.551
setting)
PU operation
Stop
2 (PU connector),
9999 (automatic
Stop/continued
recognition)
Other than 2
Stop/continued
Stop/
2 (PU connector)
continued
Other than 2
Continued
Stop/
1 (RS-485 terminals)
continued
Other than 1
Continued
3 (USB connector),
Stop/
9999 (automatic
continued
recognition)
Other than 3
Continued
Continued
Controllability in each operation mode
Combined
External
operation
operation
mode 1
(Pr.79 = "3")
×
page
188.)
Operation in each operation mode at error occurrences
Combined
External
operation
operation
mode 1
(Pr.79 = "3")
*1*4
*1
Continued
*2
Continued
*2
Continued
*2
Combined
NET operation
operation
(via RS-485
mode 2
*7
terminals)
(Pr.79 = "4")
*2
×
×
*2
×
Combined
NET operation
operation
(via RS-485
mode 2
*5
terminals)
(Pr.79 = "4")
Stop/
Continued
*2
continued
Stop/
Continued
*2
continued
Stop/
*2
continued
NET operation
*8
(via option)
page
196.)
NET
operation (via
*6
option)
Continued
Stop/
*3
continued

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