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Chapter 5 Various Functions
5.1 Power quality measurement and logging function
KW2M-A Eco-POWER METER can measure harmonics and THD for power quality measurement,
therefore it is helpful to improve the power quality.
[Max. demand]
Maximum value of measured demand value (active, reactive, apparent, active (export), reactive (export),
current)) are considered to the max. demand value. And it records the max. demand value.
5.2 Pulse output function
You can use 2-type pulse output, OUT1 and OUT2.
Refer to 4.5.5 Settings for pulse measurement for setting.
[OUT1][OUT2] are blinking when pulse output.
5.2.1 Output depends on integral electric power
Set the unit for pulse output of integral power value and pulse output turns on every time when integral
electric power reaches the unit. (Pulse width: about 100ms)
It judges at the same time of sampling cycle.
5.2.2 Stand-by alarm
When it detects stand-by power (current) of the measured load, pulse output turns on in order to notice.
Set threshold (current) (C) and stand-by time (T) to judge stand-by power.
When the measured load is satisfied the setting conditions, pulse putout turns on in order to notice.
When it exceeds the setting threshold, it turns off and reset it.
(Working flow chart)
(kW)
0
5.2.3 Under voltage alarm
When it falls below the setting voltage, pulse output turns on in order to notice.
When it exceeds, the output turns off.
5.2.4 Over voltage alarm
When it exceeds the setting voltage, pulse output turns on in order to notice.
When it falls below, the output turns off.
5.2.5 Power interruption alarm
When it detects the voltage under 5% of rated voltage for 5ms or more, pulse output turns on in order to
notice.
5.2.6 Under current alarm
When it falls below the setting current, pulse output turns on in order to notice.
When it exceeds, the output turns off.
5.2.7 Current alarm
When it exceeds the setting current, pulse output turns on in order to notice.
When it falls below, the output turns off.
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Normal working
T
Stand-by mode
Time
output turns ON
threshold
(C)
(min)
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