User Manual

4 ELECTRICAL CONNECTIONS
40
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
1 Loosen the lock screw with a 2.5 mm Allen wrench.
2 Turn the cover counterclockwise with a strap wrench.
3 Remove the cover.
Equipment needed:
• Small slotted tip screwdriver (not supplied)
Procedure:
1 Do not disconnect the safety cord from the terminal compartment cover. Put the terminal
compartment cover adjacent to the housing.
2 Remove the connector from the circuit board.
3 Connect the electrical wires to the connector. Attach the connector to the circuit board. Tight-
en the cable entry glands.
1 Put the cover on the housing and push it down.
2 Turn the cover clockwise until it is fully engaged.
3 Tighten the lock screw.
4.2.2 Remote version
For more electrical installation data, refer to Compact version on page 39.
4.3 Remote device data
4.3.1 Requirements for signal cables supplied by the customer
Non-Ex devices only:
Non-Ex devices only:Non-Ex devices only:
Non-Ex devices only: The signal cable is an option for non-Ex devices. If the signal cable is not
supplied by the device manufacturer, the cable must have properties that follow:
CAUTION!
• Use the applicable electrical cables with the cable glands.
• Make sure that the power supply does not have a current more than 5 A or that there is 5 A-
rated fuse in the electrical circuit that energizes the device.
INFORMATION!
Electrical power to the output terminal energizes the device. The output terminal is also used for
HART
®
communication.
CAUTION!
• Use the applicable electrical cables with the cable glands.
• Make sure that the power supply does not have a current more than 5 A or that there is 5 A-
rated fuse in the electrical circuit that energizes the device.
DANGER!
An Ex-approved signal cable is supplied by the manufacturer with devices for hazardous
locations. Use of this signal cable is mandatory.