Crestron CNRACKX AD User Manual

CNRACKX Addendum - DOC. 8154 Information Update for CNRACKX •• 1

Information Update for CNRACKX

Introduction

This is an addendum to the CNX Card Cage System: CNRACKX Operations Guide
(Doc. 8133). The purpose of this addendum is to release the latest information about
the CNRACKX control system. The information contained in this addendum has
been updated due to human safety concerns, equipment safety factors, design
refinements, or a variety or combination of improvements.

Information Updates

Rear Faceplates

The blank faceplates for the empty expansion slots at rear of the CNRACKX are
included but are no longer being shipped installed. Ten faceplates are provided and
additional faceplates are available through the Crestron dealer. The “CNRACKX
Physical Views” diagram (page 2 of Doc. 8133) has been updated as shown below.

CNXCPU

CONTROL

PROCESSOR

PWR

NET

LAN

COMPUTER

DPA

24

Y

C

Z

R

G

E
S
N
E
T

CRESTRON

Rear Faceplate Installation Specification

For the rear faceplate installation tightening specification (not previously provided),
refer to the note below:

CAUTION: Do not over-tighten the faceplate mounting screws. Tighten screws to
4-inch pounds (.45 Nm).

Power Requirements

The “Leading Specifications” table (page 6 of Doc. 8133) details the power
requirements of the CNRACKX as 5 watts. This information is updated to 6 watts as
shown below.

Updated Leading Specifications of the CNRACKX

SPECIFICATION DETAILS

Power Requirements

24VDC from the CNPWS-75 External Power
Supply (not supplied), Load Factor for the
CNRACKX (2 Watts for the front panel display
and indicators plus 4 Watts for the CNXCPU) is

1

6 Watts.

Information Update Crestron CNRACKX

Total Load Factor Footnote

Footnote 1 (page 7 of Doc. 8133) of the “Leading Specifications” table has been
rewritten for clarity. The following is the updated footnote:

1

CAUTION: The total load factor of the CNRACKX depends upon the
components of the control system. Add the power requirements of the
CNRACKX plus the CNXCPU requirements plus the combined requirements
of all expansion cards. Do not exceed 75 watts for the total load factor.

Crestron Electronics, Inc. Specifications subject

15 Volvo Drive to change without notice.
Rockleigh, NJ 07647
Tel: 888.CRESTRON Doc. 8154
Fax: [phone]
www.crestron.com