Xylem HYDROVAR (HV2.1 - 3.45) User Manual
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9.20 Configuration of the pump running relay (X2/4-5-6)
RELAY CONFIG.
Run Motor
Possible selection with Ï and Ð.
• Simple Multicontr. ⇒ Allows to start/stop a fixed speed
pump.
• Run Motor ⇒ motor run indication (via the relay)
If you have selected Simple Multicontroller, the following parameters will have new additional
functions:
The start level of the lag pump you enter at the parameter “Enable Seg. Ctl.”, and the stop
value in the parameter “Synchron. Limit”. Using the parameter “Stop Delay Fmin.” you are
able to switch on the lag pump after a selectable delay time.
e.g. if the HYDROVAR controlled pump reaches the start level, the relay will closed -> fixed
speed pump switched ON. It will be switched OFF, the output frequency drops below the
defined stop level.
Press the ¾ button to change to the next parameter
9.21 Submenu Offset
The 2
nd
analogue input either could be used as 2
nd
required value or as the source for a
recalculation (offset) of the required value.
S U B M E N U
Offset
Press ¾ for about 3 seconds to enter the submenu
Press the ¾ button shortly to change to the next
parameter (-> chapter 9.22)
9.21.1 Source of the Offset input
OFFSET INPUT
Off
Possible settings with Ï or Ð
OFF
Offset deactivated
EXT ADC-I
Offset will be calculated according to the current input (4-20mA)
connected to terminals X1/12 (X1/10=Ground).
There is also the possibility to connect a 2
nd
actual value sensor to
terminals X1/3 (supply for the sensor) and X1/12.
Notice: If the incoming offset signal is below 4mA, an error message
will be shown on the display and a failure is indicated (failure relay
is closed). The failure is also shown at a multi pump layout, but no
failure would be indicated (failure relay is not closed) only the
master-pump will be exchanged. If the offset signal fails at all
HYDROVARs, the failure would be indicated also.
EXT ADC-U 0-10V
EXT ADC-U 2-10V
Offset will be calculated according to the voltage input (0-10V or 2-
10V) connected to terminals X1/13 (X1/10=Ground)
Press the ¾ button to change to the next parameter