KROHNE OPTIWAVE 7300C EN - Manual (Page 42)

4
ELECTRICAL CONNECTIONS
42
OPTIWAVE 7300 C
www.krohne.com 03/2014 - 4000172405 - HB OPTIWAVE 7300 R07 en
4.3 Protection category
• Make sure that the gaskets are not damaged.
• Make sure that the electrical cables are not damaged.
• Make sure that the electrical cables agree with the national electrical code.
• The cables are in a loop in front of the device 1 so water does not go into the housing.
• Tighten the cable feedthroughs 2.
• Close unused cable feedthroughs with dummy plugs 3.
4.4 Networks
4.4.1 General information
The device uses the HART
®
communication protocol. This protocol agrees with the HART
®
Communication Foundation standard. The device can be connected point-to-point. It can also
operate in a multi-drop network of up to 15 devices.
The device output is factory-set to communicate point-to-point. To change the communication
mode from point-to-point
point-to-point point-to-point point-to-point to multi-drop multi-drop multi-drop multi-drop, refer to Network configuration on page 68.
INFORMATION!
The device fulfils all requirements per protection category IP 66/67. It also fulfils all
requirements per NEMA type 4X (housing) and type 6P (antenna).
DANGER!
Make sure that the cable gland is watertight.
Figure 4-3: How to make the installation agree with protection category IP 67