Miscellaneous functions
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KW2M-A/X User's Manual
Chapter 6 Miscellaneous functions
6.1 Power quality measurement and logging function
The KW2M-A Eco-POWER METER can measure harmonics and THD for power quality measurement,
which is helpful to improve the power quality.
[Max. demand]
The device measures and logs the following maximum demand values: active, reactive, apparent, active
(export), reactive (export), current.
6.2 Pulse output function
You can use 2-type pulse output, OUT1 and OUT2.
Refer to 5.5.5 Settings for Pulse Output for details.
[OUT1][OUT2] are blinking during pulse output.
6.2.1 Output depends on integral electric power
Set the unit for pulse output of integral power value and pulse output turns on every time when the
integral electric power reaches the unit (pulse width: about 100ms).
It is synchronized with the sampling cycle.
6.2.2 Stand-by alarm
When it detects stand-by power (current) of the measured load, the pulse output turns on.
Set threshold (current) (C) and stand-by time (T) to judge whether the load is on stand-by.
When the measured load satisfies the conditions you have set, the pulse output turns on.
When it exceeds the threshold you have set, it turns off and resets.
(Working flow chart)
(kW)
Normal working output turns ON
E
le
ctric
po
w
er
T
threshold
(C)
Stand-by mode
0
Time
(min)
6.2.3 Under voltage alarm
When the measured value falls below the voltage you have set, the pulse output turns on.
When the measured value exceeds the voltage you have set, the output turns off.
6.2.4 Over voltage alarm
When the measured value exceeds the voltage you have set, the pulse output turns on.
When the measured value falls below the voltage you have set, the output turns off.
6.2.5 Power interruption alarm
When the device detects that the voltage is under 5% of rated voltage for at least 5ms, the pulse output
turns on.
6.2.6 Under current alarm
When the measured value falls below the current you have set, pulse output turns on in order to notice.
When the measured value exceeds, the output turns off.
6.2.7 Current alarm
When the measured value exceeds the setting current, pulse output turns on in order to notice.
When the measured value falls below, the output turns off.
