Ramp Hysteresis; Ramp 1: Fast Running Up Time; Ramp 2: Fast Running Down Time; Ramp 3: Slow Running Up Time - Xylem HYDROVAR Smart Bedienungsanleitung

7.3
Press
7.4
Time setting at Ramp 1, 2, 3, or 4 will influence the control of the pump and
MUST NOT BE CHANGED at normal operation. Possible setting of each ramp
0,05 - 1000 sec.
Please take care, that the ramp times of the connected VFD are every time faster than the
settings of the ramps 1-4 of the HYDROVAR-Smart!
The fast ramp times 1 and 2 are determined by the power of the connected drive.
(Standard settings = 4-15s, depending on the power)
Press
7.5
Press
7.6
The following ramps 3 and 4 determine the speed of the internal Hydrovar-Smart controller
and depend on the system, which should be controlled.
Press
Downloaded from www.Manualslib.com

Ramp Hysteresis

RAMP HYSTERESIS
80%
Possible setting: between 0%..100% of the window
on the Hydrovar-Smart to change to

Ramp 1: Fast running up time:

RAMP 1
4.0 Sec
on the Hydrovar-Smart to change to

Ramp 2: Fast running down time:

RAMP 2
4.0 Sec
(OVERVOLTAGE) during ramp down of the pump.
Excessively slow running down time tends to generate over pressure.
on the Hydrovar-Smart to change to

Ramp 3: Slow running up time:

RAMP 3
70 Sec
on the Hydrovar-Smart to change to
manuals search engine
Level, where the fast ramps are changing to the slow
ramps
Excessively fast running up time may overload the
inverter in the starting moment.
Excessively slow running up time may cause a break
down of the outgoing pressure during operation.
Excessively fast running down time tends to cause
oscillation or hunting or can cause an error
A too slow running up time can cause a break of the
outgoing pressure during variation of the demand.
A too fast running up time may lead to oscillation
and/or overload of the inverter.
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