Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 374

 Operation mode selection flow
Referring to the following table, select the basic parameter settings or terminal wiring related to the operation mode.
Method to give Frequency setting
start command
External (terminal 2 and 4,
JOG, multi-speed, etc.)
PU (digital setting)
External signal input
(terminal STF, STR)
Communication
(RS-485 terminals)
Communication
(communication option)
External (terminal 2 and 4,
JOG, multi-speed, etc.)
PU
(FWD/REV key) PU (digital setting)
Communication (RS-485
terminals/communication
option)
External (terminal 2 and 4,
JOG, multi-speed, etc.)
Communication PU (digital setting)
(RS-485 terminals)
Communication
(RS-485 terminals)
External (terminal 2 and 4,
JOG, multi-speed, etc.)
Communication
(Communication PU (digital setting)
option)
Communication
(communication option)
 External operation mode (Pr.79 = "0" (initial value), "2")
• Select the External operation mode when the start command and the frequency command are applied from a frequency
setting potentiometer, start switch, etc. which are provided externally and connected to the control circuit terminals of the
inverter.
• Generally, parameter change cannot be performed in the External operation mode. (Some parameters can be changed.
Refer to Pr.77 on page 328.)
Terminal wiring
method
STF (forward rotation)/STR
(reverse rotation) (Refer to
page 502.)
Terminal 2 and 4 (analog) RL,
RM, RH, JOG, etc.
STF (forward rotation)/STR
(reverse rotation) (Refer to
page 502.)
STF (forward rotation)/STR
(reverse rotation) (Refer to
page 502.)
RS-485 terminals (Refer to
page 627.)
Terminals for communication
option (Refer to the
Instruction Manual of the
communication option.)
Terminal 2 and 4 (analog) RL,
RM, RH, JOG, etc.
—
Not available
RS-485 terminals (Refer to
page 627.)
Terminal 2 and 4 (analog) RL,
RM, RH, JOG, etc.
Not available
RS-485 terminals (Refer to
page 627.)
Terminals for communication
option (Refer to the
Instruction Manual of the
communication option.)
Terminal 2 and 4 (analog) RL,
RM, RH, JOG, etc.
Not available
Terminals for communication
option (Refer to the
Instruction Manual of the
communication option.)
Parameter setting Operation method
• Frequency setting
Pr.79 = "2"
Frequency setting terminal ON
(External operation
• Start command
mode fixed)
STF(STR)-ON
Pr.79 = "3" • Frequency setting
(External/PU DU digital setting
combined • Start command
operation mode 1) STF(STR)-ON
• Frequency setting
Transmit a frequency command
Pr.338 = "1"
via communication.
Pr.340 = "1, 2"
• Start command
STF(STR)-ON
• Frequency setting
Transmit a frequency command
Pr.338 = "1"
via communication.
Pr.340 = "1"
• Start command
STF(STR)-ON
Pr.79 = "4" • Frequency setting
(External/PU Frequency setting terminal ON
combined • Start command
operation mode 2) FWD/REV key ON
• Frequency setting
Pr.79 = "1"
Digital setting
(PU operation
• Start command
mode fixed)
FWD/REV key ON
• Frequency setting
Frequency setting terminal ON
Pr.339 = "1"
• Start command
Pr.340 = "1, 2"
Transmit a start command via
communication
• Frequency setting
Transmit a frequency command
via communication.
Pr.340 = "1, 2"
• Start command
Transmit a start command via
communication
• Frequency setting
Frequency setting terminal ON
Pr.339 = "1"
• Start command
Pr.340 = "1"
Transmit a start command via
communication
• Frequency setting
Transmit a frequency command
via communication.
Pr.340 = "1"
• Start command
Transmit a start command via
communication
5.9 (D) Operation command and frequency command
1
2
3
4
5
6
7
8
9
10
373
5. PARAMETERS