Mitsubishi Electric FR-F740 EC Instruction Manual page 332

Energy saving operation and energy saving monitor
Cumulative saving power monitor (
charge,
On the cumulative saving power monitor, the monitor data digit can be shifted to the right by the
number set in Pr. 891 "Cumulative power monitor digit shifted times". For example, if the cu-
mulative power value is 1278.56kWh when Pr. 891 = 2, the PU/DU display is "12.78" (display in
100kWh increments) and the communication data is "12". If the maximum value is exceeded at
Pr. 891 = 0 to 4, the power is clamped at the maximum value, indicating that a digit shift is nec-
essary. If the maximum value is exceeded at Pr. 891 = 9999, the power returns to "0" and is re-
counted. The other monitors are clamped at the display maximum value.
The cumulative saving power monitor
mined period. Measure according to the following steps:
Write "9999" or "10" in Pr. 898 "Power saving cumulative monitor clear".
Write "0" in Pr. 898 at measurement start timing to clear the cumulative saving power monitor
value and start totalization of power saving.
Write "1" in Pr. 898 at measurement end timing to hold the cumulative saving power monitor
value.
NOTE The cumulative saving power monitor value is stored every hour. Hence, when the power
supply is switched on again within one hour after it was switched off, the previously stored
monitor value is displayed and totalization starts. (The cumulative monitor value may
decrease.)
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annual power saving amount,
power saving amount,
annual power saving amount charge)
can measure the power amount during a predeter-
Parameter
power saving amount