User Manual

4 ELECTRICAL CONNECTIONS
46
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
1 Remove the terminal compartment cover.
2 Remove the 4-pin connector.
3 Put the signal cable into the opening of the cable gland.
4 Put the electrical wires in the connector terminals. Tighten the terminal screws with a small
slotted-tip screwdriver. Make sure that the electrical wires agree with the terminals. For
more data, refer to the electrical schema in this section.
5 Put the connector into the 4-pin socket. Attach the Faston connector (drain wire).
6 Attach the terminal compartment cover.
7 Tighten the cable gland. Make sure that the probe housing is correctly sealed.
4.4 Electrical connection for current output
4.4.1 Non-Ex devices
4.4.2 Devices for hazardous locations
4.5 Protection category
Figure 4-6: Electrical connections for non-Ex devices
1 Power supply
2 Resistor for HART® communication
3 Optional connection to the grounding terminal
4 Output: 11.5...30 VDC for an output of 22 mA at the terminal
5 Device
DANGER!
For electrical data for device operation in hazardous locations, refer to the related certificates of
compliance and supplementary instructions (ATEX, IECEx, cFMus, ...). You can find this
documentation on the DVD-ROM delivered with the device or it can be downloaded free of charge
from the website (Download Center).
INFORMATION!
The device fulfils all requirements per protection category IP66 / IP67. It also fulfils all
requirements per NEMA type 4X (housing) and type 6P .
DANGER!
Make sure that the cable gland is watertight.