Taco VR30

-25-
Sequence of Operation:
• Set 3 and Set 1 Open – Pump in Standby (VFD powered, motor is o, no ow), regardless of 0-10Vdc signal
• Set 3 and Set 1 Closed – increasing 0-10Vdc signal
- 0 to 2 V pump runs at medium speed (pre-purge)
- 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
• Set 3 and Set 1 Closed – decreasing 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 runs at med speed (post-purge)
MODE 1 – External analogue 0-10Vdc speed or head control and enable / disable
Application:
Using an external 0-10Vdc signal to control the speed or head of the pump and enable / disable the pump