Siemens SIMEAS Q80 Operating Instruction page 112

E-36 SIMEAS Q80 7KG8080
10.2.3 Digital inputs
SIMEAS Q80 7KG8080 has four digital inputs which are electrically isolated from the measurement system.
Power Quality Recorder SIMEAS Q80 7KG8080, Operating instruction
E50417-B1074-C419-A2, Release 09.02.2011
Level detection and LED
Digital input connection scheme for a 230V voltage
These mainly serve to process 230V
voltages, but it is also possible to monitor lower
DC or AC voltages. The terminals are designed
for connecting a cable.
For appropriate cable cross-sections, please
see the technical specs
inputs.
If the signal is above the switching
threshold (typ. 16 V), the state of the input
bit = 1 is displayed and the LED shines
green.
Below the switching threshold (typ. 16 V),
the state is = 0 and the LED is off. Below –
16 V the LED shines yellow.
eff
for the digital
72