Mitsubishi Electric FR-A820-00046 Instruction Manual page 578

(M) Monitor display and monitor output signal
Power saving
instantaneous
value [kW]
Power saving
amount [kWh]
Fig. 5-166:
NOTE The power saving cumulative monitor value is saved every hour. This means that if the power is
turned OFF after less than an hour, when then the power is turned ON again, the previously saved
monitor value is displayed, and accumulation starts. (In some cases, the cumulative monitor value
may go down.)
Estimated power value in commercial power supply operation (Pr. 892, Pr. 893, Pr. 894)
● Select the pattern for commercial power supply operation from the four patterns of discharge
damper control (fan), suction damper control (fan), valve control (pump) and commercial power
driving, and set it in Pr. 894 "Control selection during commercial power-supply operation".
● Set the motor capacity (pump capacity) in Pr. 893 "Energy saving monitor reference (motor
capacity)".
● As shown below, the consumed power ratio (%) during commercial power supply operation is
estimated from the rotations per minute ratio for each operation pattern and rating (current
output frequency/Pr. 3 "Base frequency").
5 - 376
Running
0
Accumulation
Accumulation start
0
(Pr. 898 = 0)
Cumulative energy saving monitor
Commercial power-supply drive
Discharge side
damper control
(fan)
Valve control
(pump)
Inlet damper control
(fan)
Ratio of speed to rating [%]
Running
During stop
Power is off
Pause
(Pr. 898 = 1)
Resume accumulation
(Pr. 898 = 10 or 9999)
Fig. 5-167:
Characteristic of the power consumption
Parameters
Time
Time
Clear (Pr. 898=0)
I002619E
I001181