Schneider Altivar 61 VW3A3502 handleiding

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Handleiding

12 1765272 10/2011

Operating Principle

The Altivar 61 controls the pumps via logic outputs LO51, LO52, LO53, etc., according to the operating mode that has been programmed.

The logic inputs indicate the state of the pumps to the Altivar 61:

- LI = 1, the pump is ready to operate

- LI = 0, the pump is faulty

Hour counters are used to determine the total operating time of each pump.

Choosing a variable speed pump

Single variable

In this mode, the same variable pump is always used. It is always controlled by the drive.

Multiple variable

In this mode, all the pumps can be variable (one at a time). The variable pump is chosen according to its operating time stored by the

Altivar 61: the pump with the shortest operating time is selected. The variable pump can only be changed over if all the auxiliary pumps are

off.

Choosing an auxiliary pump (fixed speed)

2 options:

- The auxiliary pumps are started in ascending order of the logic outputs (example: LO51, then LO52, then LO53, then LO54, then LO55).

The auxiliary pumps are stopped in descending order of the logic outputs (example: LO55, then LO54, then LO53, then LO52, then

LO51)

- Switching the auxiliary pumps

Starting up an auxiliary pump: the pump with the shortest operating time stored in the drive is selected.

Stopping an auxiliary pump: the pump with the longest operating time stored in the drive is selected.

Operation using limited relative operating time

A relative operating time differential between each pump can be programmed to ensure better distribution of operating times, thereby

limiting pump wear. If the total operating time differential between an operating auxiliary pump and one which is off exceeds the programmed

differential, the first pump is stopped and replaced by the second one.

The variable pump can only be replaced if all the auxiliary pumps are off, and if its operating frequency is below the programmed threshold

[V.pumpSwFr] (O18).

Special cases

If a pump is shown as "faulty" (LI=0), it is not taken into account by the Altivar 61 and the starting and stopping conditions apply only to the

other pumps.

Bekijk gratis de handleiding van Schneider Altivar 61 VW3A3502, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.