Wiring of Pressure Sensor, Pressure Signal, Load Signal

All cables must be fed through a cable gland at a suitable position of the CAN bus module. Use suitable wire end ferrules for each wire that you place on a terminal.

900_Abmessungen_EasyNOx-in-Gehäuse

Depending on the intended NOX monitoring mode (see Preferences), connect a pressure sensor 4–20 mA, a pressure signal 4–20 mA, or a load signal 4–20 mA to input 3. You can optionally connect another 4–20 mA signal to input 4, whose current value is displayed in the EasyNOₓ in the NOX Monitoring view. Note that the large cable gland at the long side of the CAN bus module on the right is not available for input 4 if you connect a second CAN bus module to this module (see section Wiring of Power Supply and CAN Bus).

Connect the shields of the wires with the cable glands. Do not lay the shields inside the CAN bus module. No bridges may be set between the measurement inputs.

Connect a pressure sensor as shown in the following illustration. The wire cross-section of the power supply cable from the pressure sensor should be at least 0.5 mm2. For smaller wire cross-sections, ensure that the cable is appropriately fused.

900_Abmessungen_EasyNOx-in-Gehäuse

Connect active signal sources 4–20 mA (pressure signal, load signal) as shown in the following illustration. Use shielded wires for connecting active signals 4–20 mA.

900_Abmessungen_EasyNOx-in-Gehäuse