Vega VEGAPULS 61 Operating Instructions Manual

Also see for VEGAPULS 61: Operating instructions Quick setup guide Operating instructions Operating instructions Quick setup guide

Contents

Vega VEGAPULS 61 Operating Instructions Manual Manual pdf 28 page image

285 Connecting to power supply and bus systemVEGAPULS 61 • Modbus and Levelmaster protocol41361-EN-160224box and at the sensor. The screen in the sensor must be connecteddirectly to the internal ground terminal. The ground terminal outsideon the housing must be connected to the potential equalisation (lowimpedance).In systems without potential equalisation, connect the cable screendirectly to ground potential at the power supply unit and at the sensor.In the connection box or T-distributor, the screen of the short stub tothe sensor must not be connected to ground potential or to anothercable screen. The cable screens to the power supply unit and to thenext distributor must be connected to each other and also connectedto ground potential via a ceramic capacitor (e.g. 1 nF, 1500 V). Thelow frequency potential equalisation currents are thus suppressed,but the protective effect against high frequency interference signalsremains.5.2 ConnectionThe voltage supply and signal output are connected via the spring-loaded terminals in the housing.Connection to the display and adjustment module or to the interfaceadapter is carried out via contact pins in the housing.Information:The terminal block is pluggable and can be removed from theelectronics. To do this, lift the terminal block with a small screwdriverand pull it out. When reinserting the terminal block, you should hear itsnap in.Proceed as follows:1. Unscrew the housing lid2. Loosen compression nut of the cable gland and remove blindplug3. Remove approx. 10 cm (4 in) of the cable mantle (signal output),strip approx. 1 cm (0.4 in) insulation from the ends of the indi-vidual wires4. Insert the cable into the sensor through the cable entryConnection technologyConnection procedure