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11.7.14 Duty/standby (3.17)
Settings
The duty/standby function can be set to these values:
•Active
• Not active.
Activate the duty/standby function as follows:
1. Connect one of the pumps to the mains supply.
Set the duty/standby function to "Not active".
Make the necessary settings in the "OPERATION" and
"INSTALLATION" menus.
2. Set the operating mode to "Stop" in the "OPERATION" menu.
3. Connect the other pump to the mains supply.
Make the necessary settings in the "OPERATION" and
"INSTALLATION" menus. Set the duty/standby function to
"Active".
The running pump will search for the other pump and
automatically set the duty/standby function of this pump to
"Active". If it cannot find the other pump, a fault will be indicated.
The duty/standby function applies to two pumps connected in
parallel and controlled via GENIbus. Each pump must be
connected to its own CUE and sensor.
The primary targets of the function is the following:
• To start the standby pump if the duty pump is stopped due to
an alarm.
• To alternate the pumps at least every 24 hours.
11.7.15 Operating range (3.18)
How to set the operating range:
• Set the min. speed within the range from a pump-dependent
min. speed to the adjusted max. speed. The factory setting
depends on the pump family.
• Set the max. speed within the range from adjusted min. speed
to the pump-dependent max. speed. The factory setting will be
equal to 100 %, i.e. the speed stated on the pump nameplate.
The area between the min. and max. speed is the actual
operating range of the pump.
The operating range can be changed by the user within the
pump-dependent speed range.
For some pump families, oversynchronous operation (max. speed
above 100 %) will be possible. This requires an oversize motor to
deliver the shaft power required by the pump during
oversynchronous operation.
Fig. 53 Setting of the min. and max. curves in % of maximum performance
The two pumps must be connected electrically
via the GENIbus, and nothing else must be
connected on the GENIbus.
TM04 3581 4608
Nominal speed
Max. speed
Actual speed range
Min. speed
Pump-dependent speed range
Min. speed, adjusted
Max. speed, adjusted
Speed [%]
Min.
Max.
100 %
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