KeriSystems NXT-6RK User manual

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 1 of 7 P/N: 01217-001 Rev. A
The Keri NXT-6RK is a keypad reader typically used for card + PIN dual verification applications. It
transmits keypad data in either 8-bit burst (default) or 26-bit Wiegand formats and can be used as a
keypad-only device. Since the NXT-6RK communicates via Wiegand format it requires an NXT-RIM
for operation.
1.0 Specifications
1.1 NXT-Reader Dimensions
• 4.6 inches tall by 3.0 inches wide by 0.7 inches deep
• 11.7 cm by 7.7 cm by 1.8 cm
1.2 Power/Current Requirements
• 10 to 14 VDC @ 115 mA (maximum current draw at 12 VDC)
1.3 Operating Conditions
• -40°F to 150°F (-40°C to 65°C) – 0% to 90% Relative Humidity, non-condensing
1.4 Read Range
• w/NXT-C - up to 6 inches (15.2 cm)
• w/NXT-I/S - up to 4 inches (10.2 cm)
• w/NXT-K - up to 3 inches (7.6 cm)
Read range is stated in a clean RF and electrical environment using credentials presented parallel to
the reader surface with the reader operating at 12 VDC. Read range may be affected by local
installation conditions. Read range will be reduced when mounted on metal.
• 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.

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 2 of 7 P/N: 01217-001 Rev. A
1.5 Keypad Formats
• 8-bit burst (default)
• 26-bit Wiegand
The Keypad format can be toggled between 8-bit burst and 26-bit Wiegand using the
KeypadDataMode card that is provided with the keypad. Present this card within 60 seconds of power
up to toggle between states.
1.6 Cable Options
NOTE: On long cable runs, cable resistance causes a drop in voltage at the end of the cable run.
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 effect.
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: Cable Requirements
Connection Total
Run
Length
# of
Conductors Shielded Stranded Twisted Pair AWGa
a. Heavier gauges than those listed are always acceptable.
Belden
Equivalent
RIM to
NXT-6RK
Reader
500 feetb
b. Run lengths greater than 500 feet are not supported.
7 Y Y N 22 9537

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 3 of 7 P/N: 01217-001 Rev. A
2.0 Installation Drawing
Cover snaps onto Base.
Insert screwdriver blade here
to remove Cover from Base.
3.00" (77 mm)
4.6" (117 mm)
0.70"
(18 mm)
Reader Cover Reader Base
Drill Size for
Cable & Beeper
Access Hole
7/8" Dia
(22 mm)
3.125"
(79 mm)
Base mounting measurements
include Cover size in dimensions.
0.625"
(15.87 mm)
1.5" (38.10 mm)
3.314"
(84 mm)
3.939"
(100.05 mm)

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 4 of 7 P/N: 01217-001 Rev. A
3.0 Wiring and Configuration Drawing
P/N: 01217-002 Rev. A
D10 - 12VDC
Reader Power
Selected
SW2
SW1 J2
1 2 345 6 7 8
NXT-6RK to RIM Wiring and Configuration Drawing
Step
Switch Select
Switch 12VDC 5VDC
J2 Jumper Settings
for Reader Power
NXT-6RK Keypad Reader - D6
RS-485 Comm - D8
Reader Type
1
2
3
4
5
6
7
8
n/a
Beeper
LED
n/a
+ 12 VDC
Ground
Data0
Data1
n/a
Blue
Brown
n/a
Red
Black & Shield
Green
White
n/a
Beeper
Red LED
Green LED
+ 12 VDC
Ground
Data0
Data1
n/a
Blue
Brown
Orange
Red
Black & Shield
Green
White
Single-Line LED Dual-Line LED
Wire Color Wire ColorConnectionConnectionPin #
Reader LED Configuration
D1 - Single-line, three-color LED
D2 - Dual-line LED - Keri default
D3 - Single-line, two-color LED

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 5 of 7 P/N: 01217-001 Rev. A
4.0 RIM Configuration
The default RIM configuration is for an MS-Series Reader using two line LED control (multi-color).
Perform the following steps to configure the RIM for the NXT-6RK Keypad Reader. Refer to the
Wiring and Configuration Drawing on page 4 for switch and LED locations, and Table 2 on page 6
for switch and LED definitions.
4.1 Enter Configuration Mode
1. Hold down both SW1 and SW2 for about two seconds.
2. All seven LEDs on the RIM will flash three times.
3. Release both SW1 and SW2, and the RIM is now in configuration mode.
4.2 Configure the RIM
The RIM is configured for the NXT-6KR when the Reader Type LED (D6) is set and the Reader LED
Configuration LED (D2) is set.
1. First the RIM allows you to configure the Reader Type.
2. Press SW1 to step through the supported reader types. Each press of SW1 will step to the next
reader type.
3. When the D6 LED is lit, press SW2. The reader type is now set.
4. Now the RIM is ready to configure the Reader LED Configuration.
5. LED D2 should be lit indicating the RIM is set in it’s default mode. This is the correct mode for
the NXT-6RK Keypad Reader. If D2 is not lit, press SW1 to step through the supported LED line
configuration types. Each press of SW1 will step to the next LED configuration type.
6. When the D2 LED is lit, press SW2. The LED line control mode is now set.
7. The RIM is now configured and it reboots to accept the new parameters. The RIM’s LEDs will be
off for about 10 seconds as the unit resets itself. All seven LEDs will flash as the unit is rebooting
with the new configuration parameters. When the LEDs stop flashing, the unit is operational.
NOTE: Do not remove power from the RIM during the reboot process. Loss of power during
rebooting will invalidate any configuration changes you have made.

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 6 of 7 P/N: 01217-001 Rev. A
4.3 Verifying RIM Configuration
The corresponding reader type and line control mode LEDs are illuminated during operation. Refer to
the Drawing on page 1 for switch and LED locations, and the Table on page 2 for switch and LED
definitions to confirm your configuration settings.
Table 2: RIM LED Guide
LED Reader Type
D4 Keri MS Series
Keri factory default setting
D5 Wiegand
D6 NXT-6RK
D7 Wiegand Reader/Keypad Combo
LED Control
D1 single wire LED control – red, green, amber, off
D2 two wire LED control – red, green, amber, off
Keri factory default setting
D3a
a. This table is valid for RIM Firmware v03.01.06 and later. Please upgrade your firmware as necessary.
single wire LED control – red, green, off
standard setting for Wiegand Readers using a single wire to drive the
LED (no amber)
Communication Active
D8 RS-485 Bus
J2 Reader Power Setting
D10 lit when set for 12 VDC reader power

NXT-6RK Proximity Reader and Keypad
Installation Guide
Page 7 of 7 P/N: 01217-001 Rev. A
5.0 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: [phone]
[phone] Telephone: + 44 (0) 1763 273 243
Fax: [phone] 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]