Xylem hydrovar, Installation, Operation And Maintenance Manual

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3. P310 WINDOW in % of P02 REQUIRED VAL.
4. P260 FMIN TIMEFMIN TIME
5. P250 MIN.FREQ.
6. Actual value
7. Output frequency
Description
RA:RAMP FMIN A
RD: RAMP FMIN D
R1: RAMP 1 - speed ramp fast increase
R2: RAMP 2 - speed ramp fast decrease
R3: RAMP 3 - speed ramp slow increase
R4: RAMP 4 - speed ramp slow decrease
Adjust ramp settings
To adjust the ramps presented above, see separate sections in M200 CONF.INVERTER
(page 57).
11.3 Example: P330 LIFT AMOUNT
Follow these instructions to set the lift amount.
1. Enter the set pressure.
See P02 REQUIRED VAL. (page 46).
2. Close all valves in the system and start the HYDROVAR
®
to read the frequency
displayed.
Another possibility to find out the frequency for the set pressure at zero demand is to
use the P305 JOG mode. For more information, see
P305 JOG (page 69).
3. Set the frequency value (set pressure at zero demand) in P325 FRQ. LIFT.
For more information, see P325 FRQ.LIFT (page 71).
4. Set the P330 LIFT AMOUNT (increase in % of the set pressure) to compensate the
friction losses in the system.
Example: set pressure = 4 bar, lift amount: a) 0% (= 4 bar, no lift), b) 100% (= 8 bar), c)
200% (=12 bar)
For more information see
P330 LIFT AMOUNT (page 71). This is set as % of the set
pressure.
11 Technical Reference
HVL 2.015-4.220 Installation, Operation, and Maintenance Manual 103