wtw IQ SENSOR NET System 2020 XT, Руководство по эксплуатации, Страница: 183 / 216

System 2020 XT C
ONNECT
What to do if...
10 - 3
ba75970e01 10/2012
Tapping points for
measuring the voltage
Fig. 10-1 Tapping points for measuring the voltage
Safe voltage measurement is possible on the module con
-
tacts on the outside of MIQ/PS and relay output modules
(see Fig. 10-1).
The supply voltage (...+ U) must be measurable at both
SENSORNET wires, i. e. left and right of the shielding. Oth
-
erwise, the functioning of the component is not ensured.
Admissible values for the internal voltage supply (+U) are
given in section 11.1.
Front:
SENSORNET connections on the terminal strip (example):
...+ U ...+ U
0 V
...+ U
...+ U
...+ U
...+ U
0 V
0 V
SENSORNET 1
SENSORNET 2