Keri Systems Eight-Door Concentrator - Manual (Page 7)

Eight-Door Concentrator
2305 Bering Drive 01959-001 Rev. 1.1
San Jose, CA 95131 USA
(800) 260-5265 (408) 435-8400 FAX (408) 577-1792
Web: http://www.kerisys.com E-mail: [email protected]
Page 7 of 24
KDC-8
Quick S
tart Guide
3.0 Configuration and Wiring
It takes a lot of cabling to support all eight doors in the cabinet. Knockouts are provided on all four
sides, cabinet providing maximum flexibility for routing cables.
Cabinet configuration is kept simple. The only jumpers of which to be aware are the external door
lock power jumpers, and there are two front-cover LED cables.
3.1 External Door Lock Relays
The 8-door cabinet is designed to allow the door lock relays to operate in two ways.
1. Non-powered/dry-contact for use with devices such as a gate operator or as a non-powered
general purpose output.
2. Powered through the lock relay common for electric door locks. The unit can use one power
supply to drive both the controllers and the lock relays, or have separate power supplies, one for
the controllers and one for the door lock relays.
Each door lock relay can be set according to your application: non-powered/dry-contact or powered
for an electric door lock.
NOTE: When providing power for door lock relays, Keri strongly recommends using two separate
power supplies. This isolates controller power from the transients that can be created on the lock
power line as the door relays kick on and off. This will reduce controller interference.
The factory default is to have the following jumpers set per Table 1, allowing the use of external
lock power through the relay common. Refer to Figure 8 on page 8 for jumper locations.
Jumpers listed in Table 1 must be removed for any controller/satellite board relays used in non-
powered/dry-contact mode or in non-powered, general purpose output mode.
Table 1: External Door Lock Power
Jumpers
Controller A-Door B-Door
Slot 1 J47 J44
Slot 2 J51 J50
Slot 3 J56 J55
Slot 4 J59 J58