Electrical connection RIA14
12 Endress+Hauser
Terminal Terminal assignment Input and output
1 Terminal for further instruments Support terminal
2 Digital limit switch (collector) Switch output
3 Digital limit switch (emitter) Switch output
Both the terminal assignment and the connection values of the device correspond to those
of the Ex-version. The device is only designed for operation in a 4 to 20 mA measuring
circuit. There must be potential equalization along the circuits (within and outside the
hazardous area).
5.3 Ensuring the degree of protection
The devices meet all the requirements of IP67. It is absolutely essential to comply with the
following points to ensure this protection is guaranteed after mounting or servicing the
device:
• The housing seal must be clean and undamaged when inserted into the groove. The seal
must be cleaned, dried or replaced if necessary.
• The cables used for connection must have the specified outer diameter (e.g., M20 x 1.5,
cable diameter 8 to 12 mm (0.3 to 0.47 in)).
• Route the cable in a loop before cable entry (→ 6, 12). This means that any
moisture that may form cannot enter the gland. Mount the measuring device so that the
cable entries are not facing upwards.
• Replace unused cable entries with dummy plugs.
• Do not remove the grommet used from the cable entry.
• The housing cover and the cable entry must be firmly tightened.
A0011260
6 Connection tips to retain IP67 protection
5.4 Post-connection check
Perform the following checks after electrical installation:
Device condition and specifications Note
Are cables or the device damaged? Visual inspection
Electrical connection Note
Is the cable type route completely isolated? No loops and cross-overs? -
Are the mounted cables strain-relieved? -
Is the terminal assignment correct? Compare the connection diagram of terminal block. → 5, 11
Are all the screws firmly tightened? Visual inspection
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