0
10 V
100%
-100%
Analog input
voltage
Analog input
value
Negative input is limited to 0
Figure 5.26 Analog Input with Limit (Bias Setting -100%)
Setting 1: 0 to 10 Vdc without Limit
The input level is 0 to 10 Vdc. Negative input values will be accepted.
Example: Terminal A1 is set to supply the frequency reference, and the bias (H3-04) is set to -100%. The frequency
reference can be set from 0 to 100% with an analog input of 5 to 10 V. With an input of 0 to 5 V, the frequency reference
can be set from -100% to 0%. The drive reverses the motor rotation with negative input.
0V
10 V
100%
-100%
Analog input
voltage
Analog input
value
Figure 5.27 Analog Input without Limit (Bias Setting -100%)
Setting 2: 4 to 20 mA Current Input
The input level is 4 to 20 mA. Negative input values by negative bias or gain settings will be limited to 0 (like setting 0).
Setting 3: 0 to 20 mA Current Input
The input level is 0 to 20 mA. Negative input values by negative bias or gain settings will be limited to 0 (like setting 0).
n
H3-03/H3-04: Terminal A1 Gain/Bias Setting
Parameter H3-03 sets the level of the selected input value that is equal to 10 Vdc input at terminal A1 (Gain).
Parameter H3-04 sets the level of the selected input value that is equal to 0 V input at terminal A1.
Both can be used to adjust the analog input A1 characteristics.
No.
Name
Setting Range
Default
H3-03
Terminal A1 Gain Setting
-999.9 to 999.9%
100.0%
H3-04
Terminal A1 Bias Setting
-999.9 to 999.9%
0.0%
Default Settings
Using the factory default settings for the analog input’s function, gain, and bias, the 0 to 10 Vdc signal at the analog input
will yield a 0 to 100% frequency reference span.
5.6 H: Terminal Functions
SIEP C710606 33A OYMC AC Drive – J1000 User Manual
99
5
Parameter Details