Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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12. (M) Item and Output Signal for Monitoring
12.5 Energy saving monitoring
NOTE
• Setting example for operation time rate: In the case where the average operation time per day is about 21 hours and the
average operation days per month is 16 days.
Annual operation time = 21 (h/day) × 16 (days/month) × 12 (months) = 4032 (h/year)
Therefore, set 46.03% in Pr.899 .
• Calculate the annual energy saving from the value of [3 Average power saving] cumulated according to the setting of
Pr.899 Operation time rate (estimated value) .
• When the power cost per hour is set in Pr.896 Power unit cost , the annual energy cost savings can be monitored.
The annual energy cost savings is determined by calculation using the following formula.
NOTE
• During regenerative driving, substitute the output power during the commercial power supply operation for the saved power
(therefore, input power = 0).
Parameters referred to
Pr.3 Base frequency  page 428
Pr.52 Operation panel main monitor selection  page 270
Pr.54 FM terminal function selection  page 279
Pr.158 AM terminal function selection  page 279
Operation time rate (%) =
4032 (h/year)
× 100(%)
＝
46.03%
24 (h/day) × 365 (days/year)
Annual power saving amount (kWh/year) =
With Pr.898 = 10 or 9999, average power
saving (kW) during cumulative period
× 24h × 365 days ×
Pr.899
100
Annual power cost saving = annual power saving amount (kWh/year) × Pr.896