Specifications
KW2M-A/X User's Manual
85
11.4 Input Specifications (main unit only)
Number of inputs
1
Insulation method
Designated insulation for input (insulate to the other functions)
Input method
Contact / non-voltage contact or open-collector
Input signal
Non-voltage
・
Impedance: Max.
1kΩ
(when short-circuit current: max. 10mA)
・
Residual voltage when shorted: max. 3V
・
Impedance when open: min.
100kΩ
Input mode
Pulse input or synchronized with input from external device
Max. counting speed
2000Hz / 30Hz
Min. input signal width
0.25ms (when 2000Hz is set) / 16.7ms (when 30Hz is set)
ON:OFF ratio
=
1:1
Pre-scale
Decimal point
Under 3 digits
Range
0.001 to 100.000 (set in setting mode)
Output mode when pulse output is
selected
HOLD
Protective elements
Zener diode
Pulse input
Input signal
1,000 to 99,000 pulse/kWh (set in setting mode)
(External pulse converter is necessary.)
Pulse rate
0.001 to 100.000 kWh/pulse
Input condition
2000Hz
Pulse width
Min. 0.25ms
Pulse interval
Min. 0.5ms
(OFF time min. 0.25ms)
30Hz
Pulse width
Min. 16.7ms
Pulse interval
Min 33.4ms
(OFF time min. 16.7ms)
Operation
voltage/current
5V DC 10mA
<Internal input circuit>
R: resistor
C: capacitor