72 YASKAWA TM.iQp.02 iQpump Drive Programming Manual
Figure 1. 65
Figure 1. 66
Figure 65 DIP Switch S1
Table 17 DIP Switch S1
■ H3-09 Terminal A2 Function Selection
The A2 analog input can be programmed to perform many different functions. The setting of parameter H3-09 determines which of the
following functions the A2 analog input will perform.
Function: Frequency Bias (Setting: 0)
By setting H3-09 = “0: Frequency Bias,” the A2 analog input will serve as a bias signal to the A1 Speed Command. The effect of using
A2 for a frequency bias is that the level of the A2 analog input will be summed with the level of the Speed Command analog input (A1).
For example, if H3-02 = 100%, H3-03 = 0%, and the A2 analog input level is 1 Vdc, the Speed Command profile will look like the figure
below. If A1 = 0 Vdc the Speed Command would be 10% of the programmed maximum frequency because A1 (0 Vdc) + A2 (1 Vdc) = 1
Vdc.
Name Function Setting
S1-1 RS-485 and RS-422 terminating resistance
OFF: No terminating resistance
ON: Terminating resistance of 110 Ω
S1-2 Input method for analog input A2
OFF: 0 to 10 V (internal resistance: 20 kΩ)
ON: 4 to 20 mA (internal resistance: 250 Ω) (Default)
Setting Description
0 Frequency Bias
2Aux Reference
B PI Feedback (factory default)
D Frequency Bias 2
E Motor Temperature
16 PI Differential
1F Not Used
S1
1
Terminating
resistance
DIP Switch S1-1 located on
terminal board.
2
1
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