Panasonic KW8M User Manual

KW8M Eco-POWER METER (1A/5ACT input type)478.2.2 Pulse inputInput mode Addition (Fixed)Max. counting speed 2kHz /30Hz (Select with setting mode)Pulse inputMin. input signal width:0.25ms (When 2kHz selected) /16.7ms (When 30Hz selected)ON:OFF ratio = 1 : 1Input signalContact / No contact (open collector)・Impedance when shorted: Max. 1kΩ・Residual voltage when shorted: Max. 2V・Impedance when open: Min. 100kΩOutput mode HOLD (Over count)Decimal point Set to 3rd decimal placesPre-scale setting Range 0.001 to 100.000 (Selectable with setting mode)8.3 Pulse output (Transistor output) SpecificationsNumber of output point 1 pointInsulation method Optical couplerOutput type Open collectorOutput capacity 100mA 30V DCPulse width approx. 100msON state voltage drop 1.5V or lessOFF state leakage current 100μA or lessPulse output unit0.001/0.01/0.1/1/10/100kWh/Alarm(AL-P)/Current alarm( AL-C) /Stand-by alarm (AL-S) /Counter(Cnt)(Selectable with setting mode)* 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.