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Chapter 7 Maintenance and Troubleshooting
JT550 Series Inverter Manua
l
- 90 -
F3.09
Output max.Freq of DO
Range:0.01kHz~100.00kHz
Default:50.00Hz
If the Y2/DO terminal is used for pulse output, this parameter is used to set the maximum frequency of
pulse output.
F3.10
AO1 offset coefficient
Range:-100.0~+100.0
Default:0.0
F3.11
AO1 gain
Range:-10.00~+10.00
Default:1.00
F3.12
AO2 offset coefficient
Range:-100.0~+100.0
Default:0.0
F3.13
AO2 gain
Range:-10.00~+10.00
Default:1.00
These four function parameters generally correct zero offset of analog output and output amplitude error.
They can also define required AO curve.
Zero offset coefficient 100% of AO1 and AO2 corresponds to 10 V or 20 mA. You can calculate
the gain and the zero offset coefficient from the following formulas:
%
100
*
max
*
)
2
1
(
)
1
*
2
2
*
1
(
max
*
)
2
1
(
max
*
)
2
1
(
Y
X
X
Y
X
Y
X
b
Y
X
X
X
Y
Y
K
For example, AO1 is used for output of frequency reference. To implement output of 2 V (Y1) at 0
Hz (x1) and output of 10 V (Y2) at 50 Hz (X2) according to the formulas, you can obtain gain and
zero offset coefficient as follows:
%
20
%
100
*
10
*
)
50
0
(
)
2
*
50
10
*
0
(
8
.
0
10
*
)
50
0
(
50
*
)
10
2
(
b
K
Then you can set F3.10 to 20 and set F3.11 to 0.8
In the formulas:
● "b" represents zero offset.
● "k" represents gain.
● "X" represents output frequency.
● "Y" represents actual output of the AO.
● " Xmax " represents max. output frequency (determined by F0-10).
● "Ymax" represents max. output 10 V or 20 mA.
AO output signal type and corresponding max. value are as follows:
AO output signal
Corresponding Max. Output (Ymax)
Voltage
10 V
Current
20 mA
F3.14
Y1 switch-on delay
0.0s~3600.0s
0.0s
F3.15
Y1 switch-off delay
0.0s~3600.0s
0.0s
F3.16
Y2 switch-on delay
0.0s~3600.0s
0.0s
F3.17
Y2 switch-off delay
0.0s~3600.0s
0.0s
F3.18
R-relay switch-on delay
0.0s~3600.0s
0.0s
F3.19
R-relay switch-off delay
0.0s~3600.0s
0.0s
F3.20
E-relay switch-on delay
0.0s~3600.0s
0.0s
F3.21
E-relay switch-off delay
0.0s~3600.0s
0.0s
F3.22
Monopulse Output Time Y1
0.0s~30.0s
0.0s
F3.23
Monopulse Output Time Y2
0.0s~30.0s
0.0s
F3.24
Monopulse Output Time Relay R
0.0s~30.0s
0.0s
F3.25
Monopulse Output Time Relay E
0.0s~30.0s
0.0s
ON
OFF
Switch-on delay
Switch-off delay
actual