Connection examples
Connection examples (digital, open collector output, 0/4...20 mA, 0...2/10 V)
| 1 | Main terminal block of the 4-Channel Data Logger | 4 | 2-wire mA sensor |
| 2 | Isolated relay contact | 5 | 3-wire mA sensor or 3-wire U-sensor |
| 3 | Sensor with open collector output |
Connection examples (active mA output)
| 1 | Main terminal block of the 4-Channel Data Logger | 2 | Active mA output, transducer or isolation transformer |
Note: The "Cnt.Day"
and "Cnt.Intrvl." operating modes require a permanent supply of the sensors. One of the
two switchable sensor supplies must be permanently active for this purpose. The use of VEXT is
recommended for this purpose (see sensor 1 in the connection example above). The power
consumption per input when the switch contact is closed can be up to 384 µA
due to the load of 10k086 .
Note: Since the universal inputs of the device are not galvanically isolated, it is
not possible to add the 4-Channel
Data Logger to an existing
4-20 mA current loop (e.g. between sensor and SPS). Use a suitable isolation transformer
in this case.
