Xylem HYDROVAR (HV2.1 - 3.45) - Manual (Page 39)

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b) Active MODE = Actuator:
1. ITT INDUSTRIES
Frequency XX.X Hz
1 st display at Mode Actuator
• In this mode an external controller is used, so the HYDROVAR will not control the set value
but will only be responsible for running the connected motor at a frequency proportional
to the value of the analogue input signal originating from the external source.
• In the “Actuator” mode, the output frequency is proportional to the input signal on
terminal X1/2 ⇒ 4-20 mA = 0 - max. frequency
• The frequency varies with fast RAMPS 1 and 2.
• The functions “Lack of water”, “Motor overheat”, “external ON/OFF” and all other internal
protections still work.
Press the ¾ button to change to the next parameter (menu 3)
c) Active MODE = Synch. Controller or Multi-controller:
1. ADR X (x) P X
XX.X Bar
1 st display at the Synch. Controller or Multicontroller
mode.
ADR X Pump address (see chapter 9.23.1)
(x) Indicates the source of the required value. It is always shown at the current
HYDROVAR which delivers the active required value.
(To select the source, see chapter 9.22.5)
(x)=(1) ⇒ required value 1 of the active HYDROVAR
(x)=(2) ⇒ required value 2 of the active HYDROVAR
P X Indicates the current pump positioning within the system, where as P1 = Master
pump, P2 = 1
st lag pump, and so on…
Press the ¾ button to change to the next parameter
2. REQUIRED VALUE 1
X.XX BAR
Set the desired set pressure with either Ï or Ð and
then shortly press the ¾-button.
If several HYDROVARs are connected via the RS-485 interface, one unit must be ready for
operation when the set pressure is changed, otherwise the set value will not be accepted by
the follow-up pumps. Afterwards the new required pressure has to be saved (see parameter
SAVE) in all pumps.
If you want to change to the 2 nd Required Value you have to close the external contact
connected to X1/10-X1/14.
After closing this contact, the display changes from REQUIRED VALUE 1 to
2.1 REQUIRED VALUE 2
ADC-X XX.X BAR
This window shows the condition of the second
required value. (see chapter 9.19)
ADC-X or INT: shows the source of the external or internal Required Value 2.
XX.X Bar: shows the actual value of the Required Value 2.
Press the ¾ button to change to the next parameter (menu 3)