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 Energy saving monitoring list
• The items in the energy saving effect monitoring (items which can be monitored when "50" is set in Pr.52, Pr.54, Pr.158,
Pr.774 to Pr.776, and Pr.992) are listed below.
(The items which can be monitored via terminal FM or CA (Pr.54 setting) and via terminal AM (Pr.158 setting) are limited
to [1 Power saving] and [3 Average power saving].)
Energy saving
monitor item
1
Power saving
2
Power saving rate
3
Average power saving
Average power saving
4
rate
Average power cost
5
savings
308
5. PARAMETERS
5.8 (M) Item and output signal for monitoring
Description and formula
It is the saved power, defined as the difference
between the estimated power input to a motor for
the commercial power supply operation and the
inverter input power which is calculated from the
inverter output power, determined using the
following formula.
(Input power for commercial power supply
operation) - (Monitored value of inverter input
power)
It is defined as the power saving expressed as a
percentage. The rate of the power saving with
respect to the estimated input power for the
commercial power supply operation is
determined using the following formula.
[1 Power saving]
Power during commercial power supply operation
The rate of the power saving with respect to the
Pr.893 setting is determined using the following
formula.
[2 Power saving]
× 100
Pr.893
It is defined as the average hourly energy saving
during a monitoring time (set in Pr.897).
∑ ([1 Power saving] × ∆t)
Pr.897
It is defined as the average hourly energy saving
expressed as a percentage. The rate of the
average hourly energy saving with respect to the
estimated input power for the commercial power
supply operation is determined using the
following formula.
∑ ([2 Power saving rate] × ∆t)
Pr.897
The rate of the average hourly energy saving
with respect to the Pr.893 setting is determined
using the following formula.
[3 Average power saving]
× 100
Pr.893
It is defined as a monetary value of the average
hourly energy saving, determined using the
following formula.
[3 Average power saving] × Pr.896 setting
Unit and
increment
0.01/0.1
9999
*3
kW
0
×100
0.1%
1
0.01/0.1
9999
*3
kWh
0
0.1%
× 100
1
*3
0.01/0.1
Parameter setting
Pr.895
Pr.896
Pr.897
9999
9999
0 to 1000 h
0 to 500
Pr.899

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