Xylem HYDROVAR Smart - Manual (Page 22)

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7.7 Ramp 4: Slow running down time:
RAMP 4
70 Sec
A too fast setting leads to oscillation
A too slow setting delays the switching off too much
Diagram: Ramp – Window
Press ¾ on the Hydrovar-Smart to change to
7.8 Maximum Frequency
MAX. FREQUENCY
50.0 Hz
Possible setting between 40 and 70 Hz.
The Hydrovar-Smart gives an analogue output signal of 0-10VDC as a speed signal, which is
connected to the frequency drive, where 0V corresponds to 0Hz and 10VDC corresponds to
the maximum frequency.
It is important that this values correspond with the values of the inverter.
Note: The setting of the Maximum frequency in the HYDROVAR-Smart has to
be the same than in the connected VFD!
Press ¾ on the Hydrovar-Smart to change to
7.9 Minimum Frequency
MIN. FREQUENCY
0.0 Hz
Here you can set the minimum frequency between 0,0
and the Maximum frequency.
Attention!: If there is set f>fmin in the parameter CONFIG. FMIN the pump will not stop in
the normal mode. It will keep running with the set minimum frequency.
!! Possibility of overheating of the pump !!
Press ¾ on the Hydrovar-Smart to change to