Mitsubishi Electric FR-A820-00046 Instruction Manual page 585

Parameters
● There are three methods to adjust the frequency setting voltage (current) bias/gain.
³( Adjust any point with application of a voltage (current) between terminals 2 and 5 (4 and 5).
Refer to page 5-406.
·( Adjust any point without application of a voltage (current) between terminals 2 and 5 (4 and
5). Refer to page 5-407.
»( Adjust frequency only without adjustment of voltage (current). Refer to page 5-408.
NOTES Performing terminal 2 calibration that includes a change of the setting frequency incline changes
terminal 1 setting.
Calibration with voltage input to terminal 1 sets (terminal 2 (4) analog value + terminal 1 analog
value) as the analog calibration value.
Always calibrate the input after changing the voltage/current input signal with Pr. 73, Pr. 267, and
the voltage/current input selection switch.
Analog input display unit changing (Pr. 241)
● The analog input display unit (%/V/mA) for analog input bias and gain calibration can be changed.
● Depending on the terminal input specification set to Pr. 73, Pr. 267, and voltage/current input
switches, the display unit of C3 (Pr. 902), C4 (Pr. 903), C6 (Pr. 904), and C7 (Pr. 905) change as
described below:
Analog command (terminals 2, 4)
(depending on Pr. 73, Pr. 267, and
voltage/current input switch)
0 to 5 V input
0 to 10 V input
0 to 20 mA input
Tab. 5-156: Units when displaying the set value
NOTE When the terminal 1 input specification (0 to ±5 V, 0 to ±10 V) does not agree with the main speed
(terminal 2, terminal 4 input) specification (0 to 5 V, 0 to 10 V, 0 to 20 mA), and if the voltages are
applied to terminal 1, the analog input is not correctly displayed. (For example, in the initial status,
when 0 V is applied to terminal 2 and 10 V is applied to terminal 1, and the analog value is dis-
played as 5 V (100%).)
Use the inverter with the Pr. 241 = "0 (initial value)" setting. (0% display).
FR-A800
(T) Multi-Function Input Terminal Parameters
Pr. 241 = 0 (initial value)
0 to 5 V ➔ 0 to 100% (0.1%)
0 to 10 V ➔ 0 to 100% (0.1%)
0 to 20 mA ➔ 0 to 100% (0.1%)
Pr. 241 = 1
0 to 100% ➔ 0 to 5 V (0.01 V)
0 to 100% ➔ 0 to 5 V (0.01 V) display
0 to 100% ➔ 0 to 20 mA (0.01 mA)
5 - 405