Reverse Rotation Prevention Selection; Frequency Setting Via Pulse Train Input - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

NOTE
• The command source of communication follows the Pr.550 and Pr.551 settings.
• The Pr.338 and Pr.339 settings can be changed while the inverter is running when Pr.77 = "2". Note that the setting change
is applied after the inverter has stopped. Until the inverter has stopped, communication operation command source and
communication speed command source before the setting change are valid.
 Command source switchover via external terminals (X67)
• In the Network operation mode, the start command source and speed command source can be switched over by the
command source switchover signal (X67). This can be used to control signal inputs from both the external terminals and
via communication.
• For the X67 signal, set "67" to any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function to a
control terminal.
• When the X67 signal is OFF, the start command source and speed command source are given via control terminals.
X67 signal state
Signal not assigned
ON
OFF
NOTE
• The ON/OFF state of the X67 signal is applied only during a stop. When the terminals are switched during operation, the ON/
OFF state is reflected after a stop.
• When the X67 is OFF, a reset via communication is disabled.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.28 Multi-speed input compensation
Pr.59 Remote function selectionpage 349
Pr.79 Operation mode selectionpage 370
5.9.4

Reverse rotation prevention selection

This function can prevent reverse rotation fault resulting from the incorrect input of the start signal.
Pr. Name
78 Reverse rotation
D020 prevention selection
• Set this parameter to limit the motor rotation to only one direction.
• This parameter is valid for all of the reverse rotation and forward rotation keys of the operation panel and of the parameter
unit, the start signals (STF, STR signals) via external terminals, and the forward and reverse rotation commands through
communication.
5.9.5

Frequency setting via pulse train input

A pulse train input via terminal JOG can be used to set the inverter's speed command.
386
5. PARAMETERS
5.9 (D) Operation command and frequency command
Start command source
According to Pr.338
Only commands given via the control terminals are valid.
selectionpage 391
Initial value Setting range
0
0 1
2
Speed command source
According to Pr.339
Description
Both forward and reverse rotations allowed
Reverse rotation disabled
Forward rotation disabled