YASKAWA iQpump Series Programming Manual page 72

Figure 1.65
Figure 1.66
Name
S1-1 RS-485 and RS-422 terminating resistance
S1-2 Input method for analog input A2
H3-09 Terminal A2 Function Selection
■
Setting
0 Frequency Bias
2 Aux Reference
B PI Feedback (factory default)
D Frequency Bias 2
E Motor Temperature
16 PI Differential
1F Not Used
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.
72
S1
1
1
2
Figure 65 DIP Switch S1
Table 17 DIP Switch S1
Function
Terminating
resistance
DIP Switch S1-1 located on
terminal board.
OFF: No terminating resistance
ON: Terminating resistance of 110 Ω
OFF: 0 to 10 V (internal resistance: 20 kΩ)
ON: 4 to 20 mA (internal resistance: 250 Ω) (Default)
Description
Setting
YASKAWA TM.iQp.02 iQpump Drive Programming Manual