Actual signals and parameters 251 Group 45: Energy savingThis group defines the set-up for calculation and optimization of energy savings.Note: The values of saved energy parameters 0174 SAVED KWH, 0175 SAVEDMWH, 0176 SAVED AMOUNT 1, 0177 SAVED AMOUNT 2 and 0178 SAVED CO2are derived from subtracting the drive's energy consumed from the direct-on-line(DOL) consumption calculated on the basis of parameter 4508 PUMP POWER. Assuch, the accuracy of the values is dependent on the accuracy of the power estimateentered in that parameter.4425 PID ENABLE DEV 0.0 … 100.0% 1 = 0.1% 0.1%Defines the level when the Precharge function is disabled and PID is enabled. Whenthe level is reached, PID is enabled. PID is executed as parameterized. If referenceramp times are set, they are used.• Value in percent of the maximum feedback.4426 PIPEFILL TIMEOUT 1 … 60000 s 1 = 1 s NOT SELDefines the maximum time the Precharge function is allowed to operate. If this timeelapses, PID is preset and PID is allowed to run as it is parameterized – with or withoutreference ramps.0 = NOT SEL - 1…60000 s: Max. Precharge operating timeGroup 45: Energy savingCode Description Range Resolution Default S4501 ENERGYOPTIMIZEROFFEnables or disables the energy optimizer, which optimizes the flux so that the totalenergy consumption and motor noise level are reduced when the drive operates belowthe nominal load. The total efficiency (motor and drive) can be improved by 1…10%depending on load torque and speed.0 = OFF – Disabled.1 = ON – Enabled.4502 ENERGY PRICE 0.00 … 655.35 1 = 0.1(Currency)0.00(Currency)Price of energy per kWh. Used for reference when energy savings are calculated. Seeparameters 0174 SAVED KWH, 0175 SAVED MWH, 0176 SAVED AMOUNT 1, 0177SAVED AMOUNT 2 and 0178 SAVED CO2 (reduction in carbon dioxide emissions intn).4507 CO2 CONV FACTOR 0.0 … 10.0 tn/MWh 1 = 0.1tn/MWh0.5 tn/MWhConversion factor for converting energy into CO2 emissions (kg/kWh or tn/MWh).Used for multiplying the saved energy in MWh to calculate the value of parameter0178 SAVED CO2 (reduction in carbon dioxide emissions in tn).Group 44: Pump protectionCode Description Range Resolution Default S
