KSB PumpDrive 2 - Variable Reference Power; Energy Savings with Variable Reference Power; Energy Savings Meter Parameters

8 Commissioning/Shutdown
107 of 212
PumpDrive 2
Variable reference power
t
(1-4-1-3)
(1-4-1-4)
(3-9-5-2)
(1-2-1-4)
P
Fig.76: Energy savings with variable reference power
P Effective power
t Time
1-2-1-4 Current input power of frequency inverter
1-4-1-3 Δ P
1-4-1-4 Energy saved
3-9-5-2 Reference power
The method with variable reference power calculates the reference power
automatically. The effective power of the pump set that would be required with the
current flow rate for fixed speed operation without a frequency inverter is calculated
and used as the reference power. For this method, the Flow Rate Estimation
parameter (3-9-8-1) must be activated.
Both methods take into account the losses directly attributed to the frequency
inverter. The energy currently being saved can be displayed via (1-4-1-3). Parameters
1-4-1-6 and 1-4-1-5 output the electricity costs saved and the CO
2
emissions avoided.
Adapt parameters (3-9-5-3) and (3-9-5-4) for this purpose if required. The energy
savings meter is reset via the Reset Energy Savings Meter parameter (1-4-1-7).
Table75: Energy savings meter parameters
Parameter Description Possible settings Refers to Factory setting
1-4-1-3 Power Saved
Power saved in relation to
fixed speed pump
Display value in kW 3-9-5-1
3-9-5-2
-
1-4-1-4 Energy Saved
Energy saved in relation to
fixed speed pump
Display value in kWh 3-9-5-1
3-9-5-2
-
1-4-1-5 CO
2
Emission Reduction
Reduction in carbon
dioxide emissions in
comparison with fixed
speed pump
Display value in t 3-9-5-3 -
1-4-1-6 Costs SavedEnergy cost
savings, in national
currency, in comparison
with fixed speed pump
Display value in national currency 3-9-5-4 -
1-4-1-7 Reset Energy Savings
Meter
Run / ESC - -