Mitsubishi Electric 800 Series Instruction Manual page 235

 Monitoring and resetting cumulative power (Pr.170, Pr.891)
• When the cumulative power is monitored (Pr.52 = "25"), the output power monitor value is added up and is updated in 100
ms increments.
• The values are stored in EEPROM every 10 minutes. The values are also stored in EEPROM at power OFF or inverter
reset.
• Increments and ranges of monitoring on the operation panel or via communication are as follows.
Operation panel
Range
0 to 99.99 kWh
100.0 to 999.9 kWh
1000 to 9999 kWh
*1 Power is measured in the range of 0 to 99999.99 kWh, and displayed in 4 digits. After the watt-hour meter (cumulative power counter) reaches
"99.99" (999.99 kWh), the meter displays values in 0.1 increments such as "100.0" (1000.0 kWh). Use Pr.891 to shift the decimal point position
when the monitored value becomes equal to or higher than 10000 kWh.
• The decimal point position on the watt-hour meter can be shifted to left. The number of digits to be shifted is equal to the
setting of Pr.891 Cumulative power monitor digit shifted times. For example, when Pr.891 = "2", the cumulative power
value 1278.56 kWh is displayed as 12.78 (in 100 kWh increments) on the operation panel, or displayed as 12 on a display
used for monitoring via communication.
• When Pr.891 = "0 to 4", the meter stops at the maximum number. When Pr.891 = "9999", the meter returns to 0 and the
counting starts again.
• The cumulative power can be monitored as 32-bit data via communication by setting Pr.52 = "77 to 80". The maximum
monitored value is 42949672 kWh in 1 kWh increments or 42949672.94 kWh in 0.01 kWh increments. Pr.891 setting is
invalid while 32-bit cumulative power is monitored. (For details on communication for 32-bit cumulative power monitor, refer
to the Instruction Manual (Communication) or the Instruction Manual of the communication option.)
• Writing "0" in Pr.170 clears the cumulative power monitor.
NOTE
• When Pr.170 is read just after "0" has been written in Pr.170, the setting "9999" or "10" is displayed.
 Monitoring cumulative energization time (Pr.563)
• When the cumulative energization time is selected as a monitor item (Pr.52 = "20"), the counter of cumulative energization
time since the inverter shipment accumulated every hour is displayed.
• One hour is displayed as "0.001", and the value is counted up to "65.53".
• The EEPROM is updated every minute until the cumulative energization time reaches one hour, and then the EEPROM is
updated every 10 minutes. The EEPROM is also updated at power OFF.
• When the cumulative energization time counter reaches 65535, it starts from 0 again. The number of times the cumulative
energization time counter reaches 65535 can be checked with Pr.563.
NOTE
• The cumulative energization time does not increase if the power is turned OFF after less than an hour.
 Actual operation time monitoring (Pr.171, Pr.564)
• On the actual operation time monitoring (Pr.52 = "23"), the inverter running time is added up every hour. (Time is not added
up during a stop.)
• One hour is displayed as "0.001", and the value is counted up to "65.53".
• The values are stored in EEPROM every 10 minutes. The EEPROM is also updated at power OFF.
• When the cumulative energization time counter reaches 65535, it starts from 0 again. The number of times the actual
operation time counter reaches 65535 can be checked with Pr.564.
• Setting "0" in Pr.171 clears the actual operation time meter.
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11. (M) Item and Output Signal for Monitoring
11.2 Monitor item selection on operation panel or via communication
*1
Increment
Pr.170 = "10"
0.01 kWh
0.1 kWh 0 to 9999 kWh
1 kWh
Via communication
Range
Increment
Pr.170 = "9999"
0 to 65535 kWh
1 kWh
(initial value)