2 do not, Wiegand elevator control panel – Keri Systems LC-508 Wiegand Elevator Control User Manual
Page 6
Wiegand Elevator Control Panel
2305 Bering Drive
01942-001 Rev. D
San Jose, CA 95131 USA
(800) 260-5265 (408) 435-8400 FAX (408) 577-1792
Web: www.kerisys.com E-mail: [email protected]
Page 6 of 24
Quick S
tart Guide
LC-502W/LC-508W
4.2
Do Not
•
Make modem phone line connections through PBX telephone switching systems - most
modems are not compatible with PBX systems leading to disconnection problems with the
modem.
•
Locate the LC-500W controller near EMI sources - EMI sources can affect the performance of
the controller.
•
Use switching power supplies - they are EMI sources.
•
Route network and reader cables beside power cables - transients on the power cables may be
picked-up by network and reader cables.
•
Stretch or over-tension cables.
•
Route cables over sharp objects.
•
Let the cables get tangled.
•
Mix LC-500Ws with PXL-100s in the same network.
•
Connect earth ground to the network cable shield - the LC-500W automatically connects earth
ground to the shield at one point on the network to prevent ground loops.
•
Use gender changer plugs when making RS-232 serial communication connections (unless you
know it is a "straight-through" plug) - gender changers may have internal wiring changes that
can disrupt communications.