Xylem HYDROVAR Smart - Manual (Page 33)

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7.21.6.2 Synchronous Window
SYNCHRON-WINDOW
2.0 Hz
Frequency offset
Adjustable between 0...10 Hz
Threshold lift for switching off the 3 rd and 4 th follow-up pump.
Setting the Synchronous Limit:
1.
Set the desired set value and close the outgoing valves for no flow.
2. Start the first pump in JOG Mode (1st Window in the submenu), increase the frequency,
till you reach the required value. Read the frequency ( = f
0
)
3. Set the synchronous threshold (f
0
+ 2-3 Hz)
4. Set the synchronous offset to 1-2 Hz
(depending on the pump curve and operating point).
To leave the submenu press the ¾ longer than 3 sec. to change to
S U B M E N U
Synch. Control
Press ¾ on the Hydrovar-Smart to change to
7.21.7 Pump status indication
PUMP – SEQUENCY
Adr1 disabled
Shows the status of the individual drives
- for follow-up pump switching
- settings from address 1 to 4, (address 5 is reserved for external control
devices)
- Information concerning the actual sequential status of each pump.
The following diagnosis parameters can be also be read in this display window:
hold Px Pump is stopped (control released)
run Px Pump is running (control released)
stop Px Pump is stopped, because f< start frequency of the previous
pump
Disabled Hydrovar-Smart not ready to start (no release)
Error Hydrovar-Smart error
Fault Polling failure (RS-485)
(interface connection wrong or not connected)
Detected Polling successful (RS-485)
AdrX * “*” -> Address of the pump that is being read
Press ¾ on the Hydrovar-Smart to change to