Mitsubishi Electric FR-A800, Instruction Manual

Page: 539 / 1042

Parameters (M) Monitor display and monitor output signal
FR-A800 5 - 359
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").
I002619E
Fig. 5-162: Cumulative energy saving monitor
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.)
Fig. 5-163:
Characteristic of the power consumption
I001181
0
0
During stop
Power is off
Running
Accumulation
Accumulation start
(Pr. 898 = 0)
Power saving
instantaneous
value [kW]
Power saving
amount [kWh]
Running
Time
Time
Clear (Pr. 898=0)
Pause
(Pr. 898 = 1)
Resume accumulation
(Pr. 898 = 10 or 9999)
Commercial power-supply drive
Discharge side
damper control
(fan)
Inlet damper control
(fan)
Valve control
(pump)
P
o
wer cons
umption
[%
]
Ratio of speed to rating [%]