Keri Systems NXT-4R - Manual (Page 2)

NXT-4R Reader
Installation Guide
Page 2 of 2 P/N: 01999-003 Rev. A
NOTE: Keri does not recommend hot-plugging a Reader, RIM, or 4x4 into an NXT controller.

Remove power from the controller prior to connecting these devices.
3.0 Contact Keri Systems
End of document.
Table 1: Reader and 4x4 Cable Options
Connection Type
Total
Run
Length
Shielded, Stranded,
2 Twisted-Pair
a
a. Keri recommends this cable type for best system performance.
CAT-5
b
b. Keri’s preferred low-cost option. Keri has no suggested vendor for this type of cable.
Shielded, Stranded,
4-Conductor
c
c. Use care when routing this type of cable as it can make the system more susceptible to EMI.
AWG Suggest AWG Suggest
RS-485 bus

from NXT-2D/-4D

to NXT-4x4 only
up to
500 feet
18 - Data plus
4x4 Power
22 - Data only
Belden
8723
unshielded 18 - Data plus
4x4 Power
22 - Data only
Windy City:
414302-S
West Penn: 244
Tappan:
1880AB4M-CM
RS-485 bus

from NXT-2D/-4D

to NXT-4x4

and NXT Readers
up to
500 feet
18 - Data plus
4x4 Power
22 - Data only
Belden
8723
shielded 18 - Data plus
4x4 Power
22 - Data only
Windy City:
414302-S
West Penn: 244
Tappan:
1880AB4M-CM
RS-485 bus

from NXT-2D/-4D

to NXT Readers only
up to
1,000 feet
22 for Data Belden
8723
shielded 22 for Data Windy City:
416303-S
West Penn: 241
Tappan:
2280AB4M-CM
Keri USA Keri UK, Ireland, Europe
2305 Bering Drive
San Jose, CA 95131 Unit 17

Park Farm Industrial Estate

Ermine Street

Buntingford

Herts SG9 9AZ UK
Telephone: (800) 260-5265
(408) 435-8400
Telephone: + 44 (0) 1763 273 243
Fax: (408) 577-1792 Fax: + 44 (0) 1763 274 106
Web: www.kerisys.com Web: www.kerisystems.co.uk
E-mail: [email protected]

[email protected]
E-mail: [email protected]
[email protected]