YASKAWA iQpump Series Programming Manual page 71

Figure 1.63
As a further example, for an inverse-acting speed command, set the bias = 100% and the gain = 0%. The minimum analog input level (0
Vdc or 4 mA) will produce a 100% speed command and the maximum analog input level (10 Vdc or 20 mA) will produce a 0% speed
command.
Figure 1.64
H3-08 Terminal A2 Signal Level
■
Setting
0
2
3
The H3-08 parameter (Terminal A2 Signal Level) allows the programmer to specify the signal that will be applied to the A2 analog input.
The A2 analog input can accept either a 0–10 Vdc or 4-20 mA signal as a reference. The iQpump drive also has a DIP switch (S1) on the
removable terminal board that must be set for the proper reference signal into the A2 analog input. The S1-2 dipswitch setting determines
the internal resistance of the A2 input while parameter H3-08 determines how the iQpump drive interprets the measured signal.
YASKAWA TM.iQp.02 iQpump Drive Programming Manual
Gain = 100%
4mA
Bias = -25%
Figure 63 Output Frequency with Reduced Bias Setting
Bias
Gain = 100%
Gain
Bias = 0%
Figure 64 Output Frequency with Inverted Gain and Bias Settings
0 - 10 Vdc
4 - 20 mA (factory default)
0 - 20 mA
0V 10V
20mA
2.5V
8mA
Analog Input Signal
Analog Input Level
0V
10V
4mA 20mA
Analog Input Signal
Analog Input Level
Description
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