Pulse Input Specifications; Pulse Output (Transistor Output) Specifications - Panasonic KW4M User Manual

Eco-power meter
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Accuracy
(without error
in CT and VT)

8-2-2 Pulse input specifications

Input mode
Max. counting speed
Pulse input
Input signal
Output mode
Number of Digit
Decimal point
Range
Pre-scale setting
Unit

8-3 Pulse output (Transistor output) Specifications

Number of output point
Insulation method
Output type
Output capacity
Pulse width
ON state voltage drop
OFF state leakage current
Power measurement
Pulse
output unit
Pulse measurement
* We recommend the setting of minimum unit for pulse output for measurement shown as below.
Output pulse: 4 pulse or less per 1sec.
How to calculate
(Unit for pulse output:PL-P)>(Max. measurement power [kW])/(3600[s]×4 [pulse/s])
Caution (1) Improper unit setting may cause miss counting.
(2) If the OFF time is too short, there is a possibility of counting errors.
Instantaneous electric power, Integrated electrical energy
Voltage, Current, Electricity charge, Corresponding value
Basic
accuracy
Hour Meter
±1.5% F.S. /10℃ ±1digit
Temperature
characteristics
(Range of –10 to 50℃ based on 20℃ for rated input power-factor 1)
±1.5% F.S.±1 digit
Frequency
characteristics
(Frequency change±5% based on rated frequency, for rated input power-factor 1)
Addition (Fixed)
2kHz /30Hz (Select with setting mode)
Min. input signal width:
0.25ms (When selected 2kHz) /16.7ms (When selected 30Hz)
ON:OFF ratio = 1 : 1
Contact / No contact (open collector)
・Impedance when shorted: 1kΩ
・Residual voltage when shorted: Max. 2V
・Impedance when open: 100kΩ
HOLD (Over count)
6-digit (0 to 999999) (Selectable with setting mode)
Set to 3rd decimal places (Auto-setting)
0.001~100.000 (Selectable with setting mode)
「CNT」/「l」/「kl」/「m3」 (Selectable with setting mode)
(Count value does not change even if the unit setting is changed during counting.)
1 point
Optical coupler
Open collector
100mA 30V DC
approx. 10ms *
1.5V or less
100μA or less
0.001/0.01/0.1/1/10/100kWh/Alarm
HOLD (Over count)
±2.5% F.S. ±1digit
(at 20℃, rated input, rated frequency, power-factor 1)
※Accuracy coverage:10~100% of rated current of CT
±0.01%±1digit (at 20℃)
(In case power on start or current energizing,±0.01%+1s±1 digit)
(Selectable with setting mode)
35

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