Keri Systems EntraGuard Silver Walk-Up Package - Manual (Page 6)

EntraGuard
®
Silver Walk-Up Package
Quick Start Guide
Page 6 of 12 P/N: 01535-001 Rev. A
3.0 Cable Requirements
RS-232 Serial Cable
•
three conductor, shielded, stranded, AWG 24 wire (Belden 9533 or a larger gauge)
• 50 foot maximum length (per RS-232 industry specification - greater lengths are not recommended)
RS-485 Network Cable
•
one twisted, shielded pair of conductors, stranded, AWG 24 wire (Belden 9501 or a larger gauge)
• 4,000 foot total network length (per RS-485 industry specification)
• extended network configurations are possible – refer to the Network Wiring Application Note (P/N 01824-002) for
extended network configurations of up to 5,000 feet per star line and 16,000 feet total network length
Telephone
•
1 pair copper phone line
NOTE: EntraGuard Silver is not to be used with a Centrex, PBX, or digital phone line. Only use a Plain Old Telephone
Service (POTS) analog phone line.
Input Power
•
two conductor, stranded, AWG 18 wire (Belden 8461 or a larger gauge)
NOTE: On long power cable runs, the cable resistance causes a drop in voltage at the end of the cable run. Be sure your
power supply does provide 12 VDC at the end of the cable run.
Earth Ground
• Single conductor, AWG 18 wire (or a larger gauge)
1
Input and Output Connections
•
two conductor, stranded, AWG 22 (or a larger gauge)
NOTE: The Lock Output relay may require a heavier gauge of wire depending upon the current demands of the lock and
the length of the lock wiring run.
NOTE: If plenum cable is required, please reference the Belden plenum equivalent to the cables listed above.
4.0 Earth Ground and the 12 VDC Power
The EntraGuard Silver panel requires 12 VDC power at 750 mA. You must make a quality earth ground connection to the
controller prior to connecting the DC power lines. The earth ground provides protection for the controller and ensures the
best possible operating conditions. Possible sources for earth ground are a ground rod, a cold water pipe, a steel building
frame, the electrical system ground at the breaker/fuse box, or the telephone system ground. The earth ground connection
should be located as close as possible to the controller.
1. Ground wire is green, with or without yellow tracer.