Mitsubishi Electric FR-A820-00046 Instruction Manual page 571

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Parameters
● Set the Pr. 73 and voltage/current input switch settings according to the table below.
(
Pr. 73 setting
0
1 (initial value)
2
3
4
5
6
7
10
11
12
13
14
15
16
17
Tab. 5-149: Setting of parameter 73
● Turning the Terminal 4 input selection (AU) signal ON sets terminal 4 to the main speed. With this
setting, the main speed setting terminal is invalidated.
● Set the Pr. 267 and voltage/current input switch setting according to the table below.
Tab. 5-150: Setting of parameter 267
NOTES
To enable the terminal 4, turn the AU signal ON.
Set the parameters and the switch settings so that they agree. Incorrect setting may cause a fault,
failure or malfunction.
Terminal 1 (frequency setting auxiliary input) is added to the terminal 2 or 4 main speed setting
signal.
When the override setting is selected, terminal 1 or 4 is set to the main speed setting, and terminal
2 is set to the override signal (0 to 5 V or 0 to 10 V, and 50% to 150%). (If the main speed of terminal
1 or 4 is not input, the compensation by terminal 2 is disabled.)
Use Pr. 125 (Pr. 126) (frequency setting gain) to change the maximum output frequency at the
input of the maximum output frequency command voltage (current). At this time, the command
voltage (current) need not be input.
The acceleration/deceleration time inclines up/down to the acceleration/deceleration reference
frequency, so it is not affected by change of Pr. 73.
When Pr. 858 "Terminal 4 function assignment" and Pr. 868 "Terminal 1 function assignment" = "4",
the terminal 1 and terminal 4 values are set to the stall prevention operation level.
After the voltage/current input signal is switched with Pr. 73, Pr. 267, and voltage/current input
switches, be sure to let calibration performed.
When Pr. 561 "PTC thermistor protection level" ≠ "9999", terminal 2 does not function as an analog
frequency command.
FR-A800
indicates the main speed setting.)
Terminal 2
Switch 1
input
0 to 10 V
OFF
0 to 5 V
OFF
0 to 10 V
OFF
0 to 5 V
OFF
0 to 10 V
OFF
0 to 5 V
OFF
0 to 20 mA
ON
0 to 20 mA
ON
0 to 10 V
OFF
0 to 5 V
OFF
0 to 10 V
OFF
0 to 5 V
OFF
0 to 10 V
OFF
0 to 5 V
OFF
0 to 20 mA
ON
0 to 20 mA
ON
Pr. 267 setting
0 (initial value)
1
2
(T) Multi-Function Input Terminal Parameters
Compensation input
Terminal 1
terminal compensation
input
method
0 to ±10 V
0 to ±10 V
Terminal 1
Addition compensation
0 to ±5 V
0 to ±5 V
0 to ±10 V
Terminal 2
Override
0 to ±5 V
0 to ±10 V
0 to ±5 V
0 to ±10 V
Terminal 1
Addition compensation
0 to ±10 V
0 to ±5 V
0 to ±5 V
0 to ±10 V
Terminal 2
Override
0 to ±5 V
0 to ±10 V
Terminal 1
Addition compensation
0 to ±5 V
Terminal 4 input
4 to 20 mA
0 to 5 V
0 to 10 V
Polarity reversible
Not applied
(state in which a negative
polarity frequency
command signal is not
accepted)
Applied
Switch 2
ON
OFF
OFF
5 - 391

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