Connecting The Cables; Post-Connection Check - Endress+Hauser Liquiphant FTL64 Operating Instructions Manual

Liquiphant FTL64
Endress+Hauser
6.2.9

Connecting the cables

Required tool
• Flat-blade screwdriver (0.6 mm x 3.5 mm) for terminals
• Torque wrench
2
3.5
1
 34 Example of coupling with cable entry, electronic insert with terminals
1 M20 coupling (with cable entry), example
2
Maximum conductor cross-section 2.5 mm
the electronics
3
Maximum conductor cross-section 4.0 mm
plastic housing with external protective ground connection (PE))
ød Nickel-plated brass 7 to 10.5 mm (0.28 to 0.41 in)
ød Plastic 5 to 10 mm (0.2 to 0.38 in)
ød 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:
• Secure the coupling
• Tighten the union nut of the coupling with a torque of 8 Nm (5.9 lbf ft)
• Screw the enclosed coupling into the housing with a torque of 3.75 Nm (2.76 lbf ft)
6.3

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?
3
2 (AWG 14), ground terminal inside the housing + terminals on
2 (AWG 12), ground terminal outside the housing (example of
Electrical connection
A0018023
31