Crestron C2N-UNI8IO Original operating instructions

C2N-UNI8IO
Universal Keypad Interface
Installation & Operation Guide
Additional Resources
Visit the product page on the Crestron website (www.crestron.com)
for additional information and the latest rmware updates. Use a QR
reader application on your mobile device to scan the QR image.
Hardware Hookup
The following diagram shows a C2N-UNI8IO in a lighting and AV system application.
Connectors, Controls, and Indicators
The following diagram shows a C2N-UNI8IO in a lighting and AV system application.
Wiring Diagrams
CAUTION: Shorting non-current limited supplies may cause damage to the outputs
on the unit.
Internal 5V LED Driver (Internal 5 mA 5 V Current Limit)
NOTE: Dip switches must be in the OFF position.
NOTE: Internal 5 mA 5 V current limit can be enabled or disabled on an individual
basis.
Description
The Crestron®C2N-UNI8IO is a compact interface designed to allow virtually any keypad
to be connected directly to a Cresnet®control network. The Cresnet network is the
communications backbone for Crestron sensors, dimmers, keypads, touch panels,
shade controllers, thermostats, and many other devices. This exible 4-wire bus provides
data communications and 24 Vdc power for all of the devices on the Cresnet network.
The C2N-UNI8IO installs easily at the keypad location, sitting conveniently inside the
electrical box behind the keypad. Wiring connections to the network are made using a
detachable terminal block connector. Wiring connections to the keypad can be made
using the provided connectors with ying leads, or the keypad manufacturer can choose
to mate directly to the exposed connectors.
The C2N-UNI8IO is compatible with most keypads that provide contact closures as user
inputs and use LEDs for feedback. Up to 1 A @ 24 Vdc power and 40 mA @ 5 Vdc is
available to support a variety of keypads. The C2N-UNI8IO includes eight sensing inputs,
each capable of sensing a contact closure. The C2N-UNI8IO also includes eight
open-drain outputs capable of sinking up to 100 mA each (500 mA maximum total
current). Also provided are eight current-limiting resistors that can be switched in series
with each channel to limit the output current to 5 mA @ 5 Vdc.
Specications for the C2N-UNI8IO are listed below.
Installation
WARNING: To avoid re, shock, or death, turn off the power at the circuit breaker or
fuse and test that the power is off before wiring!
NOTE: Observe the following points:
• Install and use this prodcut in accordance with appropriate electrical codes and
regulations.
• A licensed electrician must install this product.
NOTE: Before using the C2N-UNI8IO, ensure the device is using the latest rmware.
Check for the latest rmware for the C2N-UNI8IO at www.crestron.com/rmware. Load
the rmware onto the device using Crestron Toolbox™ software.
The C2N-UNI8IO can be installed inside a standard electrical box. Refer to the following
illustration.
Installing the IDC Connector and the Cresnet Connector
OUTPUT
INPUT
G G 1 2 3 4 5 6 7 8
5V 1 2 3 4 5 6 7 8 24V
Third-party keypad
C2N-UNI8IO
Control
processor A/V
system
Lighting
system
Cresnet
Multiwire cable
OUTPUT
INPUT
Removing the IDC Connector
Use a at-blade screwdriver to loosen the IDC connector from the header. Place the
at-blade screwdriver between the header and midsection of the connector. Turn the
screwdriver to pry the IDC connector up.
Using a Third-Party Keypad
OUTPUT
INPUT
G G 1 2 3 4 5 6 7 8
5V 1 2 3 4 5 6 7 8 24V
GND
GND
LED
LED
LED
LED
LED
LED
LED
LED
1 2 3 4 5
2.05 in
(52 mm)
0.51 in
(13 mm) 2.13 in
(54 mm)
0.69 in
(18 mm)
2.07 in
(53 mm)
SPECIFICATION DETAILS
Power Requirements
Cresnet Power Usage 0.5 W (0.02 A @ 24 Vdc)
Does not account for LED, bulbs, or other device's
power consumption.
Ratings
Digital Inputs (8) Inputs rated for 0-24 Vdc, includes 10 KΩ pull-up
to 5 Vdc
Logic low threshold: ≤1 V
Logic high threshold: ≥3.7 V
Digital Outputs (8) Open drain outputs rated for 100 mA @ 24 Vdc,
500 mA max (combined for all 8 outputs), when not
in Current Limit mode
Maximum Power Load: 1 A @ 24 Vdc and
40 mA @ 5 Vdc. Actual load capability dependent
upon the amount of available Cresnet power in the
system.
Environmental
Temperature 32°F to 104°F (0°C to 40°C)
Humidity 10% to 95% RH (noncondensing)
Dimensions
Height 2.06 in (53 mm)
Width 2.05 in (52 mm)
Depth 0.68 in (18 mm)
Weight 1 oz (24 g)
# CONNECTORS,
CONTROLS, AND
INDICATORS
DESCRIPTION
1 SETUP (1) Red LED and (1) miniature push button, used
for touch-settable ID (TSID)
2 OUTPUT CURRENT
LIMIT
(1) 8-position DIP switch, engages 1 K ohm
current limiting resistor per output, limits each
output to 5mA @ 5VDC for use with LEDs
NOTE: When in “current limit” mode, be sure to
not exceed the above rating.
3 NET (1) 4-pin 3.5mm detachable terminal block;
Cresnet slave port, connects to Cresnet control
network
4 OUTPUT (1) 10-pin 0.1” IDC connector, includes (10) single
conductor 22 AWG 3” ying leads Outputs
comprised of (1) 24VDC, (1) 5VDC, and (8) digital
outputs (referenced to GND)
Note: 24V connector is a Cresnet power pass-
through.
5 INPUT (1) 10-pin 0.1 in (3 mm) IDC connector comprised
of (10) single-conductor 22 AWG 3 in (76 mm)
ying leads
Inputs comprised of (2) GND references and (8)
digital inputs (referenced to GND)

External 24 V LED Driver (100 mA Open Collector Output)
NOTE: Dip switches must be in the ON position.
NOTE: Internal 5 mA 5 V current limit can be enabled or disabled on an individual
basis.
Using Internal 24 Vdc Power Supply (100 mA Open Collector Output)
NOTE: Dip switches must be in the ON position.
NOTE: Internal 5 mA 5 V current limit can be enabled or disabled on an individual
basis.
OUTPUT
INPUT
G G 1 2 3 4 5 6 7 8
5V 1 2 3 4 5 6 7 8 24V
GND
GND
Resistor / LED
Lamp
Relays
OUTPUT
INPUT
G G 1 2 3 4 5 6 7 8
5V 1 2 3 4 5 6 7 8 24V
GND
GND
24VDC External Power Supply
+
Resistor / LED
Lamp
Relays
24
Y
Z
G
Wire nuts and
jumper wires
Pair A
22 AWG
twisted
Pair B
18 AWG parallel
To control
system
G
Z
Y
24
24
Y
Z
G
Make Cresnet Connections
Connect the C2N-UNI8IO to the Cresnet Network via a Cresnet network cable (sold
separately).
NOTE: When wiring, observe the following points:
• Do not power up the system until all wiring is veried. Use care to ensure that data
(Y and Z) and power (24 and G) connections are not crossed.
• Ground the Cresnet shield at the Control System end only.
• Use the Crestron CNTBLOCK network terminal expander and diagnostic tool for
testing.
• Use #18 AWG jumper wires. Use a wire nut that accommodates all three wires.
This product is Listed to applicable UL®Standards and requirements by Underwriters Laboratories
Inc.
Ce produit est homologué selon les normes et les exigences UL applicables par Underwriters
Laboratories Inc.
As of the date of manufacture, the device has been tested and found to comply with specications
for CE marking.
Federal Communications Commission (FCC) Compliance Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following
conditions:(1) This device may not cause harmful interference and (2) this device must accept any
interference received, including interference that may cause undesired operation.
CAUTION: Changes or modications not expressly approved by the manufacturer responsible for
Crestron Electronics, Inc. Installation & Operation Guide - DOC. 6956C
15 Volvo Drive Rockleigh, NJ 07647 (2027241)
Tel: 888.CRESTRON 11.16
Fax: [phone] Specications subject to
www.crestron.com change without notice.
compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Industry Canada (IC) Compliance Statement
CAN ICES-3(B)/NMB-3(B)
The product warranty can be found at www.crestron.com/warranty.
The specic patents that cover Crestron products are listed at patents.crestron.com.
Certain Crestron products contain open source software. For specic information, please visit
www.crestron.com/opensource.
Crestron, the Crestron logo, Cresnet, and Crestron Toolbox are either trademarks or registered
trademarks of Crestron Electronics, Inc. in the United States and/or other countries. UL and the UL logo
are either trademarks or registered trademarks of Underwriters Laboratories, Inc. in the United States
and/or other countries. Other trademarks, registered trademarks, and trade names may be used in this
document to refer to either the entities claiming the marks and names or their products. Crestron
disclaims any proprietary interest in the marks and names of others. Crestron is not responsible for
errors in typography or photography.
This document was written by the Technical Publications department at Crestron.
©2016 Crestron Electronics, Inc.