KSB PumpDrive 2 - Functional Check Run; Head; Flow Rate Diagram; Operating Point Monitoring Parameters; Functional Check Run after Idle Period

8 Commissioning/Shutdown
94 of 212
PumpDrive 2
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1
3
4
2
H
3-4-3-30 3-4-3-31
Q
0
Fig.65: Head / flow rate diagram
Permissible operating range
1 Nominal speed 2 Minimum speed
3 Low flow limit 4 Overload limit
Table67: Operating point monitoring parameters
Parameter Description Possible settings Refers to Factory setting
3-4-3-30 Low Flow Limit Flow Rate in % of Q
opt
Flow rate for low flow limit at nominal speed
0..100% 3-4-3-8 30%
3-4-3-31 Overload Limit Flow Rate in % of Q
max
Flow rate for the overload limit at nominal speed
0..100% 3-4-3-7 98 %
8.8.2.10 Functional check run
When a pump is stopped for an extended period of time, the pump can be operated
cyclically to prevent the pump from seizing up.
NOTE
The functional check run is only performed in automatic mode. The functional
check run also remains active if system start has not been activated for the
respective pump. The pump will start up.
The speed that is used for the functional check run can be set via the Speed for
Functional Check Run parameter (3-9-2-5). The duration of the functional check run
(3-9-2-4) is extended by ramp times. The functional check run also works for pumps
that were stopped by standby mode (sleep mode). If a functional check run is in
progress, it can be interrupted, or cancelled, at any time by changing to the OFF
mode.
Functional check run after idle period
After a configurable idle period has passed (3-9-2-1), a functional check is performed
on the pumps in automatic mode. For this purpose, the Automatic Functional Check
Run (3-9-2-1) parameter must be set to After Idle Period. The Functional Check Run
Duration (3-9-2-4) parameter is used to specify the duration of the functional check
run.