Xylem hydrovar - Page 61

P215 RAMP 1
4 sec
Actual Value Output Freq.
Left fct. Up fct. Down fct. Right fct.
This parameter adjusts the fast acceleration time, and it effects the control of the pump;
the ramp depends on the type of HYDROVAR and the type of pump.
HVL Possible setting (sec) Default setting (sec)
2.015 ÷ 2.040 1–250 4
3.015 ÷ 3.040
4.015 ÷ 4.040
3.055 ÷ 3.110 1–1000 8
4.055 ÷ 4.110
4.150 ÷ 4.220 1–1000 12
For more information, see Example: P200 Ramp Settings (page 102).
P220 RAMP 2
G
NOTICE:
• Fast running down time often causes overvoltage.
• Slow running down time often causes over-pressure.
P220 RAMP 2
4 sec
Actual Value Output Freq.
Left fct. Up fct. Down fct. Right fct.
This parameter adjusts the fast deceleration time, and it effects the control of the pump;
the ramp depends on the type of HYDROVAR and the type of pump.
HVL Possible setting (sec) Default setting (sec)
2.015 ÷ 2.040 1–250 4
3.015 ÷ 3.040
4.015 ÷ 4.040
3.055 ÷ 3.110 1–1000 8
4.055 ÷ 4.110
4.150 ÷ 4.220 1–1000 12
For more information, see Example: P200 Ramp Settings (page 102).
P225 RAMP 3
G
NOTICE:
• Fast running up time can cause oscillation and overload.
• Slow running up time can cause a drop of the outgoing operating pressure, during
variation of the demand.
8 Programming
HVL 2.015-4.220 Installation, Operation, and Maintenance Manual 59