KROHNE OPTISONIC 3400 Quickstart EN - Manual (Page 22)

3
ELECTRICAL CONNECTIONS
22
OPTISONIC 3400
www.krohne.com 11/2013 - QS OPTISONIC 3400_4002741202_R02-en
100…230 VAC
• Connect the protective ground conductor PE of the mains power supply to the separate
terminal in the terminal compartment of the signal converter.
• Connect the live conductor to the L terminal and the neutral conductor to the N terminal.
24 VAC/DC
• Connect a functional ground FE to the separate U-clamp terminal in the terminal
compartment of the signal converter.
• When connecting to functional extra-low voltages, provide a facility for protective separation
(PELV) (VDE 0100 / VDE 0106 and/or IEC 364 / IEC 536 or relevant national regulations).
3.4 Laying electrical cables correctly
1 Lay the cable in a loop just before the housing.
2 Tighten the screw connection of the cable entry securely.
3 Never mount the housing with the cable entries facing upwards.
4 Seal cable entries that are not needed with a plug.
Figure 3-5: Protect housing from dust and water