-26-
2
RUN voltage MAX voltage Function
< 2 V < 1 V Pump stopped
> 3 V < 1 V Internal regulation
< 2 V 2..10 V Minimum curve
> 3 V 2..10 V
Figure 1: External 2..10 V transfer curve for Mode 1
0..10 V
(RUN+MAX)
Figure 2: External 0..10 V transfer curve for Mode 1
Sequence of Operation:
• Increase of 0-10Vdc signal
- 0 to 2 V pump o
- 2 to 3 V pump runs at min speed (25% of max speed) or min head (15% of max head)
NOTE: Min speed user adjustable to meet min ow requirements
- 3 to 10 V speed increases linearly to V
• Decrease of 0-10Vdc signal
- 10 to 3 V speed decreases linearly to V
- 3 to 1 V pump runs at min speed
- 1 to 0 V pump o
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