KW8M Eco-POWER METER
72
9.5 Option Specifications (only for AKW8111H)
9.5.1 Logging
Log function
Memory of
main unit
Automatic
logging
Save cycle
60 minutes
Saved data
Integral active power, Integral reactive power, Integral
apparent power
Saved data
amount
Max. 2232 records (3 months)
Display
Monthly integral electric power,
Daily integral electric power,
Hourly integral electric power
(active, reactive, apparent)
Selected
logging *
1
Save cycle
1, 5, 10, 15, 30, 60 min.
Saved data
Integral active power, Integral reactive power, Integral
apparent power, Current, Voltage, Pulse count value
Saved data
amount
Max. 2160 records *1.5 days (when save cycle is 1 min.)
Calendar timer
Time accuracy
Monthly accuracy 240 seconds (at -10
℃
)
Monthly accuracy 70 seconds (at 25
℃
)
Monthly accuracy 240 seconds (at 50
℃
)
Integral active power
for arbitrary period
Integral active power in arbitrary period
Display range: 0.00 to 9999999.9 (kWh)
Backup contents by battery
Time measurement and log data storage
Battery life
*2,*3
About 5 years (at 25
℃
)
*1 Some software is required to check the saved data by selected logging function in memory of main
unit. The recommended tool software “KW Monitor” is available for download from our website.
*2 When battery power is reduced, “E” is blinking. Replace battery according to the procedures.
*3 Battery life will be shorten if using this under high-temperature.
9.5.2 Simple Demand
Demand span
30 minutes span fix
Span system
synchronized with the main unit clock
Data update cycle
1 minute
Measurement item
Present demand (update every 1 second),
Estimated demand (update every 1 minute)
Remaining time (update every 1 minute)
Display
Present demand, Estimated demand, Demand setting value
Remaining time
Ratio of estimated demand
Demand log, Monthly max. demand log
Saved date (main unit memory)
Demand log 336 records (7 days)
Monthly max. demand log 13 records (13 months)
Demand alarm *
Indication
[d] blinking at the bottom line
Output
Pulse output
Power Failure Memory
Monthly max. demand log, Demand log, Present demand
*Demand alarm
When the present demand or estimated demand exceeds the setting value, it notifies by the output
and the indication. You need to set “DEM” with unit for pulse output setting in order to output.
Please use this simple demand function as your standard.
It doesn’t support pulse input. It supports only CT input (power measurement).
The time used by this function is the time set up with Eco-POWER METER.
Therefore, it is different from the demand meter controlled by an electric
power company.
