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| Title | Size | Download |
|---|---|---|
| 02-Appendix A Installation of Lightning Arrester for Network Interfaces | 47.02 KB |
l You can install a lightning arrester only for each 10/100 Mbps electrical Ethernet interface supporting RJ-45 connectors.
l No lightning arrester for network interface is supplied with the access controller.
If an outdoor network cable should be directly led to the access controller, to prevent possible damages to the access controller due to lightning strike, please serially connect the lightning arrester for the network interface before you plug the outdoor cable into the access controller.
Tools
l Philips or flat-blade screwdrivers
l Multimeter
l Diagonal cutting plier
Installation Procedure
Step1 Remove the protective paper on one side of the double-faced adhesive tape and stick it on the shell of the arrester; remove the protective paper on the other side and stick the arrester on the chassis of the access controller. Keep the arrester as close to the grounding screw of the access controller as possible.
Step2 Cut the ground cable of the arrester of a suitable length according to the distance between the arrester and the grounding screw and then fasten the cable on the grounding screw tightly.
Step3 Use the multimeter to verify whether the ground cable of the arrester has a close touch with the grounding screw and chassis of the access controller.
Step4 Follow the instruction of the arrester to connect the arrester for network interface with a transit cable. Pay attention to the direction: IN end of the cable is connected to the arrester while OUT end of the cable is connected to the access controller. After the connection, check whether the LEDs of the interface modules are normal.
Technical parameters, installation and maintenance methods of an arrester have been given in the arrester instruction. Read the instruction carefully before installing the lightning arrester for the network interface.
Step5 Tie the cables together with nylon clips.
Figure A-1 Installation of a lightning arrester for network interface
Precautions
To ensure performance of the lightning arrester for network interface during installation, observe the following rules:
l Properly connect the lightning arrester for network interface, with IN connecting to the lightning arrester while OUT connecting to the network interface of the access controller.
l Correctly ground the lightning arrester. When connecting the ground cable, make sure that the ground cable is of a proper length and has a good touch with the grounding screw of the access controller. Check the ground cable with a multimeter after connection.
l Install adequate lightning arresters for network interfaces. When there are more than one network interface connecting to outdoor cables, you should install a lightning arrester for each of the network interfaces to guard the interfaces against possible damages.