PI1 Process Interface (optional)
Power Analyzer NORMA 4000, NORMA 5000
63
EO1111G REV G
9.5 PI1 - technical data
9.5.1 8 inputs (analog/digital)
Each differential input can be configured individually as an analog
or a digital input.
Parameter Voltage
Range
±
10 V nominal (saturation region
approx. +2 %)
Max. input voltage
±
50 Vrms
±
10 V (without additional error)
Max. common mode voltage to
ground
±
25 V (without limitation by
protective components)
Uncertainty of measurement
±
(0.1 % of AVG+ 0.08 % of AVGR)
Parameter Frequency
Measuring signal
TTL-compatible or AC (switching
threshold approx. +1.5 V
±
0.5 V
hysteresis)
Range 0.5
Hz
... 500 kHz *
1
Max. input voltage
±
50 Vrms
Max. common mode voltage to
ground
±
25 V
Uncertainty of measurement
±
0.025 % of AVG
9.5.2 4 digital inputs for the detection of the sense of
rotation
Inputs for the detection of the sense of rotation are only used for
motors and in conjunction with the corresponding digital speed
inputs.
*
1
The number of pulses per revolution must be synchronised with the rotational
speed of the motor in such a way that the maximum measuring frequency is not
exceeded. On the other hand, ensure that the resolution is sufficient to measure
the frequency at low motor speeds.
Input configured
as analog input
Input configured
as digital input
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