Post-Connection Check - Endress+Hauser Liquiphant FTL51B Operating Instructions Manual

Electrical connection
34
2
3.5
1
 31 Example of coupling with cable entry, electronic insert with terminals
1 M20 coupling (with cable entry), example
2
Conductor cross-section maximum 2.5 mm
the electronics
3
Conductor cross-section maximum 4.0 mm
plastic housing with outer protective ground connection (PE))
⌀d Nickel-plated brass 7 to 10.5 mm (0.28 to 0.41 in)
⌀d Plastic 5 to 10 mm (0.2 to 0.38 in)
⌀d Stainless steel 7 to 12 mm (0.28 to 0.47 in)
Pay attention to the following when using the M20 coupling
Following cable entry:
• Counter-tighten the coupling
• Tighten the union nut of the coupling with 8 Nm (5.9 lbf ft)
• Screw the enclosed coupling into the housing with 3.75 Nm (2.76 lbf ft)
6.4

Post-connection check

 Is the device or cable undamaged (visual inspection)?
 Do the cables used comply with the requirements?
 Do the mounted cables have adequate strain relief?
 Are the cable glands mounted and firmly tightened?
 Does the supply voltage match the information on the nameplate?
 No reverse polarity, is terminal assignment correct?
 If supply voltage is present, is the green LED lit?
 Are all the housing covers installed and tightened?
 Optional: Is the cover tightened with securing screw?
24/25 mm
8.0 Nm
3
2 (AWG14), ground terminal on inside in housing + terminals on
2 (AWG12), ground terminal on outside of the housing (example:
Liquiphant FTL51B
A0018023
Endress+Hauser