Stream 6055 and 7091 controller

[takayan]

When my friend set 7091 controller 100% and 30% with 1sec pulse, Stream 6055 does not perform 100% and 30% power. Is it because too short for the pump to switch between 30 and 100%?

 

[rvitko]

Does it not pulse at all or not speed up and slow down completely.

 

[takayan]

I need to check with my friend, but it sounds like not speed up and slow down completely. Therefore, it looks having constant speed.

 

[rvitko]

1 second is not enough time for the complete change of speed, I usually find 3 seconds is the minimum for a complete 30-100 change. In 1 second though he should see some change.