Xylem HYDROVAR (HV2.1 - 3.45) - Manual (Page 49)

49
Manual Control:
If MANUAL CONTROL is selected, the parameter REQUIRED VALUE will change to MANUAL
CONTROL in the main menu, where the actual frequency and the actual value are displayed
(according to the JOG-MODE in the submenu).
• Now the frequency can be changed with the Ï and Ð buttons
• The speed of the pump will change along the fast Ramps
• After selecting the right frequency, it can be saved in the standard SAVE window
• After a supply failure, the pump will run with this selected frequency (depending on the
parameter AUTO-START) automatically.
• In the 1 st display, the actual frequency is shown.
• CONFIG. FMIN will not work in this mode.
Attention: Driving the pump in a not allowed speed range can damage the motor or
the HYDROVAR!
Press the ¾ button to change to the next parameter
9.17 Regulation mode
REGULATION MODE
Normal
Normal: Speed is increased with falling actual value
signals. (e.g.: Control at constant output pressure)
Inverse: Speed is reduced with falling actual value
signal. (e.g.: Control at constant suction pressure or at
constant level)
Press the ¾ button to change to the next parameter
9.18 Start Value
START VALUE
disabled
This parameter gives you the start value after pump stop
in percentage of the required value.
Adjustable between disabled and sensor range.
e.g. required value: 5.0 bar
start value: 2.5 bar
If the pump system has reached the required pressure of 5.0 bar and there is no more
consumption, the HYDROVAR shuts off the pump.
When the consumption grows up and the pressure goes down the pump will normally start. If
you have selected a START VALUE of 2,5bar the pump will start after the pressure drops
below.
Press the ¾ button to change to the next parameter