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

Page: 778 / 1218

(A) Application parameters Parameters
5 - 576
●
The following shows the relationship between the input values of the analog input terminals, and
the set point and measured value.
Can be changed by Pr. 73 and Pr. 267 and the voltage/current input switch. (Refer to page 5-406.)
Selection of additive method for PID calculation result
When ratio is selected as the additive method (Pr. 128 = "42, 43"), PID calculation result × (ratio of main
speed) is added to the main speed.
The ratio is determined by the Pr. 125 "Terminal 2 frequency setting gain frequency" and C2 (Pr. 902)
"Terminal 2 frequency setting bias frequency" settings. In the initial status, 0 to 60 Hz is set for 0 to
100%. Thus, 60 Hz main speed is regarded as 100%, and the 30 Hz main speed is regarded as 50%.
Input
terminal Inspect
specification
Relationship with analog input
Calibration parameter
Set point Result
Terminal 2
0 to 5 V
0 V = 0%
5 V = 100% 0 V = 0%
5 V = 100%
Pr. 125, C2 to C4 0 to 10 V
0 V = 0%
10 V = 100% 0 V = 0%
10 V = 100%
0 to 20 mA
0 mA = 0%
20 mA = 100% 0 mA = 0%
20 mA = 100%
Terminal 1
0 to ±5 V
–5 V to 0 V = 0%
5 V = +100% –5 V to 0 V = 0%
5 V = +100%
When Pr. 128 = "10"
Pr. 125, C2 to C4
When Pr. 128
≥
"1000"
C12 to C15
0 to ±10V
–10 V to 0 V = 0%
10 V = +100% –10 V to 0 V = 0%
10 V = +100%
Terminal 4
0 to 5 V
0 V to 1 V = 0%
5 V = 100% 0 V to 1 V = 0%
5 V = 100%
Pr. 126, C5 to C7 0 to 10 V
0 V to 2 V = 0%
10 V = 100% 0 V to 2 V = 0%
10 V = 100%
0 to 20 mA
0 to 4 mA = 0%
20 mA = 100% 0 to 4 mA = 0%
20 mA = 100%
Tab. 5-243: Relationship between the analog input and the set point and measured value
I002709E
Fig. 5-282: Signal calibration at terminal 2
NOTES Even if C4 (Pr. 903) is set to other than 100%, the frequency setting signal is treated as 100%.
Even if C3 (Pr. 902) is set to other than 0%, the frequency setting signal is treated as 0%.
If C2 (Pr. 902) is set to other than 0 Hz, the frequency setting signal is 0% at the C2 (Pr. 902) fre-
quency setting or below.
0
100%
Initial value
Frequency setting signal
Bias
C2 (Pr. 902)
60 Hz
Output fr
eque
nc
y
Gain
Pr. 125