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a_rishi · Junior 2 Joined: 29 Apr 2014 Posts: 29

I would be grateful if someone help me on this clarification please.

Wastewater pumping station: I understand that the ACQ580 ABB Drive can be used to control wastewater pumping station using an ultrasonic level transmitter (4-20 mA) and using the multipump function.

My query is that if the transmitter fail i.e. there is a loss of the analogue input on the ACQ580, this may cause an overflow or is there another function available such as a high level float switch that may be configured as backup to start the vsd.

0day · Member junior Joined: 09 Dec 2017 Posts: 54

Normally the technological engineer in wastewater must provide or a way to evacuate overflow or as you already say there must be a set of min max sensors for Emergency STOP depending the situation.
If the situation is critical the min max sensors has to be entered into a define state just in case there are a defective sensors. And more, the PLCs from waste water station must be linked in a redundant ring.

ABB ACQ580 Wastewater Pumping Station