Keri NXT-1RE User manual
NXT-1RE/-3RE/-5RE Exit Reader
Installation Guide
Page 1 of 4 P/N: 01250-001 Rev. B
Keri NXT controllers with Mercury firmware now provide an Entrance/Exit door control feature. This Entrance/Exit
feature allows two readers to be wired to one bus on the NXT controller to control entrance and exit through that one door.
Access requests entering through the door use a standard NXT-R Reader (designated as an Entrance Reader). Access
requests exiting through that same door use an NXT-RE Reader (designated as an Exit Reader). Otherwise, all
specifications and wiring information for the two reader types are identical.
NOTE: The Entrance/Exit Door reader feature is currently only available on NXT controllers using the optional, Mercury
Inside firmware. For NXT controllers using standard NXT firmware, a reader configured as an Out-door is not recognized
by the Doors.NET software.
1.0 Wiring and Layout Diagrams
1.1 NXT-1RE/-3RE/-5RE Exit Readers
An NXT Exit Reader is wired to a bus the same way a standard NXT Entrance Reader is wired, but both readers are wired
to the same bus. This can be done using two separate reader cables wired into the terminal block at the bus on the
controller, or by splicing the two readers together near the door and running one cable to the controller.
• This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to correct the interference at his own expense.
• Changes to this equipment not expressly approved by Keri Systems, Inc. may void FCC certification and the user’s authority to operate
this equipment.
• Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference,
including interference that may cause undesired operation of the device.
Beeper
LED
Beeper
LED
IO-Minus (White)
IO-Plus (Green)
Ground (Black)
+12 VDC (Red)
Shield (Silver)
total cable length
sFEETMMAX
FORONEREADERONLY
sFEETMMAX
FORTWOREADERSOR
ONEREADERWITH
other peripheral
"ROWN'REEN/RANGEWO3TRIPE
"ROWN'REEN/RANGEWITH3TRIPE
Blue
"LUEWITH3TRIPE
In Reader
Out Reader 0.2EV!
NXT-1R/-3R/-5R Exit Reader Installation Drawing
4-Conductor - OR - CAT-5 Cabling
Shielded 4-Conductor Cabling 3HIELDED#!4#ABLING
NXT-1RE/-3RE/-5RE Exit Reader
Installation Guide
Page 2 of 4 P/N: 01250-001 Rev. B
2.0 Verify your License
Older license keys for NXT controllers with Mercury firmware may not have this option enabled. Verify your Doors.NET
license has this feature enabled before configuring your In and Out readers in the software.
1. Open the LicenseManager.exe program in the folder where your instance of Doors.NET is installed (typically in the
C:\Keri\DoorsNET folder).
2. Click the License tab and scroll through the list of license values until you locate the “Enable NXT Exit Reader” line
item. This item should be set to “True.”
3. If this item is NOT set to True, you must contact Keri Systems’ Inside Sales department to have your license updated.
3.0 Specifications
3.1 NXT-Reader Dimensions
• NXT-1RE Euro Mount Prox Reader
- 3.25 inches tall by 3.25 inches wide by 0.5625 inches deep, not including wiring connectors
- 8.25 cm by 8.25 cm by 1.43 cm
• NXT-3RE Mullion Reader
- 3.75 inches tall by 1.625 inches wide by 0.50 inches deep
- 9.52 cm by 4.13 cm by 1.27 cm
• NXT-5RE Wall Switch Reader
- 4.50 inches tall by 3.00 inches wide by 0.625 inches deep, not including wiring connectors
- 11.43 cm by 7.62 cm by 1.59 cm
NXT-1RE/-3RE/-5RE Exit Reader
Installation Guide
Page 3 of 4 P/N: 01250-001 Rev. B
3.2 Power/Current Requirements
• 10 to 14 VDC @ 120 mA (maximum current draw at 12 VDC)
3.3 Operating Conditions
• -40°F to 150°F (-40°C to 65°C) – 0% to 90% Relative Humidity, non-condensing
3.4 Cable Options
RS-485 bus runs can daisy-chain together an NXT-4x4 and NXT-Reader on one line. The total cable run distance should
be less than 500 feet from the NXT controller for runs with two Readers or one Reader and one 4x4, and less than 1,000
feet for single Reader runs.
NOTE: Cable resistance causes a drop in voltage at the end of long cable runs. Ensure the appropriate power and current
for your device is available at the device at the end of the cable run. Heavier gauge cable reduces this affect.
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.
Table 1: Reader and 4x4 Cable Options
Connection Type Total Run
Length Minimum
AWG
Shielded,
Stranded,
2 Twisted-
Paira
a. Keri recommends this cable type for best system performance.
CAT-5b
b. Keri’s preferred low-cost option. Keri has no suggested vendor for this type of cable.
Shielded,
Stranded,
4-Conductorc
c. Use care when routing this type of cable as it can make the system more susceptible to EMI.
Suggest Suggest
RS-485 bus
from NXT-2D/-4D
to NXT-4x4 only
up to
500 feet 18 - Power
22 - Data Belden
8723 shielded Windy City:
414302-S
Tappan:
1880AB4M-CM
RS-485 bus
from NXT-2D/-4D
to NXT-4x4 and one NXT Reader
or to two NXT Readers
up to
500 feet 18 - Power
22 - Data Belden
8723 shielded Windy City:
414302-S
Tappan:
1880AB4M-CM
RS-485 bus
from NXT-2D/-4D
to one NXT Reader only
up to
1,000 feet 18 - Power
22 - Data Belden
8723 shielded Windy City:
416303-S
Tappan:
2280AB4M-CM
NXT-1RE/-3RE/-5RE Exit Reader
Installation Guide
Page 4 of 4 P/N: 01250-001 Rev. B
4.0 Contact Keri Systems
End of document.
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
This manual suits for next models
2
