KROHNE OPTISONIC 3400 EN - Manual (Page 30)

4
ELECTRICAL CONNECTIONS
30
OPTISONIC 3400
www.krohne.com 11/2013 - 4002037702 - HB OPTISONIC 3400 -en-R02
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).
4.4 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 4-5: Protect housing from dust and water