Actual signals and parameters 251
Group 45: Energy saving
This group defines the set-up for calculation and optimization of energy savings.
Note: The values of saved energy parameters 0174 SAVED KWH, 0175 SAVED
MWH, 0176 SAVED AMOUNT 1, 0177 SAVED AMOUNT 2 and 0178 SAVED CO2
are derived from subtracting the drive's energy consumed from the direct-on-line
(DOL) consumption calculated on the basis of parameter 4508 PUMP POWER. As
such, the accuracy of the values is dependent on the accuracy of the power estimate
entered 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. When
the level is reached, PID is enabled. PID is executed as parameterized. If reference
ramp times are set, they are used.
• Value in percent of the maximum feedback.
4426
PIPEFILL TIMEOUT
1 … 60000 s 1 = 1 s NOT SEL
Defines the maximum time the Precharge function is allowed to operate. If this time
elapses, PID is preset and PID is allowed to run as it is parameterized – with or without
reference ramps.
0 = NOT SEL - 1…60000 s: Max. Precharge operating time
Group 45: Energy saving
Code Description Range Resolution Default S
4501
ENERGY
OPTIMIZER
OFF
Enables or disables the energy optimizer, which optimizes the flux so that the total
energy consumption and motor noise level are reduced when the drive operates below
the 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. See
parameters 0174 SAVED KWH, 0175 SAVED MWH, 0176 SAVED AMOUNT 1, 0177
SAVED AMOUNT 2 and 0178 SAVED CO2 (reduction in carbon dioxide emissions in
tn).
4507
CO2 CONV FACTOR
0.0 … 10.0 tn/MWh 1 = 0.1
tn/MWh
0.5 tn/MWh
Conversion 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 parameter
0178 SAVED CO2 (reduction in carbon dioxide emissions in tn).
Group 44: Pump protection
Code Description Range Resolution Default S
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