Mitsubishi Electric FR-A820-00046 Instruction Manual page 556

(M) Monitor display and monitor output signal
Cumulative power monitor and clear (Pr. 170, Pr. 891)
● On the cumulative power monitor (Pr. 52 = "25"), the output power monitor value is added up and
updated in 100 ms increments. (The values are saved in EEPROM every hour.)
● Display increments and display ranges of the operation panel, parameter unit and communication
(RS-485 communication, communication option) are as indicated below.
Operation panel, parameter unit
Range
0 to 999.99 kWh
1000.0 to 9999.9 kWh
10000 to 99999 kWh
Tab. 5-134: Units and range of the cumulative energizing monitor
Power is measured in the range of 0 to 99999.99 kWh, and displayed in five digits.When the monitor
value exceeds "999.99", a carry occurs, for example "1000.0", so the value is displayed in 0.1 kWh
increments.
● The monitor data digit can be shifted to the right by the number of Pr. 891.
For example, if the cumulative power value is 1278.56 kWh when Pr. 891 = "2", the operation panel
display is 12.78 (display in 100 kWh increments) and the communication data is 12.
● If the maximum value is exceeded at Pr. 891 = "0 to 4", the monitor value is clamped at the
maximum value, indicating that a digit shift is necessary. If the maximum value is exceeded at
Pr. 891 = "9999", the monitor value returns to 0, and the counting starts again.
● Writing "0" in Pr. 170 clears the cumulative power monitor.
NOTE If "0" is written to Pr. 170, and Pr. 170 is read again, "9999" or "10" is displayed.
Cumulative energization time and actual operation time monitor (Pr. 171, Pr. 563, Pr. 564)
● Cumulative energization time monitor (Pr. 52= "20") accumulates energization time from ship-
ment of the inverter every one hour.
● On the actual operation time monitor (Pr. 52 = "23"), the inverter running time is added up every
hour. (Time is not added up during a stop.)
● If the number of monitor value exceeds 65535, it is added up from 0. Pr. 563 allows the user to
check how many times the cumulative energization time monitor has exceeded 65535h. Pr. 564
allows the use to check how many times the actual operation time monitor has exceeded 65535h.
● Writing "0" in Pr. 171 clears the actual operation time monitor. (The cumulative energization time
monitor cannot be cleared.)
NOTES The cumulative energization time does not increase if the power is turned OFF after less than an
hour.
The actual operation time does not increase if the cumulative running time before power OFF is
less than an hour.
If "0" is written to Pr. 171 and Pr. 171 is read again, "9999" is always displayed. Setting "9999" does
not clear the actual operation time meter.
5 - 354
Unit
Pr. 170 = 10
0.01 kWh
0.1 kWh 0 to 9999 kWh
1 kWh
Communication
Range
Pr. 170 = 9999
0 to 65535 kWh
(initial value)
Parameters
Unit
1 kWh