Mitsubishi Electric FR-A800, Instruction Manual

Page: 571 / 1042

Parameters (T) Multi-Function Input Terminal Parameters
FR-A800 5 - 391
●
Set the Pr. 73 and voltage/current input switch settings according to the table below.
(
indicates the main speed setting.)
●
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.
Pr. 73 setting
Terminal 2
input
Switch 1
Terminal 1
input
Compensation input
terminal compensation
method
Polarity reversible
0 0 to 10 V OFF 0 to ±10 V
Terminal 1
Addition compensation
Not applied
(state in which a negative
polarity frequency
command signal is not
accepted)
1 (initial value) 0 to 5 V OFF 0 to ±10 V
2 0 to 10 V OFF 0 to ±5 V
3 0 to 5 V OFF 0 to ±5 V
4 0 to 10 V OFF 0 to ±10 V
Terminal 2
Override
5 0 to 5 V OFF 0 to ±5 V
6 0 to 20 mA ON 0 to ±10 V
Terminal 1
Addition compensation
7 0 to 20 mA ON 0 to ±5 V
10 0 to 10 V OFF 0 to ±10 V
Applied
11 0 to 5 V OFF 0 to ±10 V
12 0 to 10 V OFF 0 to ±5 V
13 0 to 5 V OFF 0 to ±5 V
14 0 to 10 V OFF 0 to ±10 V
Terminal 2
Override
15 0 to 5 V OFF 0 to ±5 V
16 0 to 20 mA ON 0 to ±10 V
Terminal 1
Addition compensation
17 0 to 20 mA ON 0 to ±5 V
Tab. 5-149: Setting of parameter 73
Pr. 267 setting Terminal 4 input Switch 2
0 (initial value) 4 to 20 mA ON
1 0 to 5 V OFF
2 0 to 10 V OFF
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.