Crestron CLX-PWS75 Operating Manual

CLT- & CLX-PWS75

Functional Summary

The Crestron 75 Watt Power Supply Terminal Block and
Module (CLT-PWS75 and CLX-PWS75, respectively)
are considered a single entity and must be used together.
They ship separately to permit termination of the field
wiring to the CLT-PWS75 prior to installation of the
CLX-PWS75, as described in this guide. The
CLX-PWS75 is a power supply module that provides up
to 75 Watts of Cresnet power to Crestron equipment. The
terminal block and module can be mounted in any
Crestron Automation Enclosure (CAEN-Series
Enclosures, refer to the NOTE in the next column). The
terminal block is designed to terminate the circuit feed
(LINE and NEUTRAL) and distribute the power to a
connector on a supplied cable assembly (LOAD) that
connects to the power supply module. The power supply
module operates with an input of 100 to 250 VAC, 2.3A
(maximum). The power supply module has a fuse that
protects the 24 VDC output. If the network power lines
are shorted, the fuse is blown. As a result, the NET
POWER LED extinguishes.

Industry Compliance

This product has been evaluated to US and Canada
Standards: (CSA60950-1-03/UL 60950-1, First edition)
by CSA under NRTL Program.

NOTE: Modules and terminal blocks must be installed
into the lowest available spaces and continue toward the
top of the enclosure.

Terminal Block & Module Locations (Single-wide Enclosure)

GROUNDING

TERMINAL

BLOCK

BLOCK

MODULETERMINAL

Terminal Block & Module Locations (Double-wide Enclosure)

TERMINAL BLOCK

(LEFT)

MODULE

MODULE

TERMINAL BLOCK

(RIGHT)

Installation

The terminal block and module must be mounted into a
Crestron Automation Enclosure by a licensed electrician,
in accordance with all national and local codes.

CAUTION: This equipment is for indoor use only and
needs to be air-cooled. Mount in a well-ventilated area.
The ambient temperature must be 32°F to 104°F (0°C to
40°C). The relative humidity must be 0% to 90% (non­condensing).

Terminal blocks are installed along the left side of single­wide enclosures and along the outside edges (left and
right sides) of double-wide enclosures. Modules are
installed along the right side of single-wide enclosures
and side-by-side in the center of double-wide enclosures.
When installing modules and terminal blocks in a double­wide enclosure, be sure to invert units on the right side so
that they can be properly wired. Refer to the illustrations
shown in the next column when considering the location
of terminal blocks and modules within an enclosure.

Crestron Electronics, Inc. Installation Guide – DOC. 6348A

15 Volvo Drive Rockleigh, NJ 07647 (2012603)
Tel: 888.CRESTRON 03.07
Fax: [phone] Specifications subject to
www.crestron.com change without notice.

GROUNDING TERMINAL BLOCKS

Terminal Block & Module Crestron CLT- & CLX-PWS75

P

NOTE: Unless otherwise indicated, the lighting system
specified in this guide is modular, requiring assembly in
the field by a licensed electrician, in accordance with all
national and local codes.

If you require an assembled UL Listed panel, Crestron
offers this service through its UL Listed panel shop. This
includes complete in factory system configuration and
assembly by Crestron for an additional fee.

Terminal Block Installation and Field Wiring

CAUTION: RISK OF ELECTRIC SHOCK—MORE
THAN ONE DISCONNECT SWITCH MAY BE
REQUIRED TO DE-ENERGIZE THE EQUIPMENT
BEFORE SERVICING.

NOTE: Both left-side and right-side adhesive wiring

labels are provided. The left-side labels are used in both
single and double-wide enclosures. The right-side labels
are only used in double-wide enclosures.

1. Remove the backing from the left or right
adhesive wiring label.

2. Apply the adhesive label by aligning the holes in
the label with the holes on the Crestron
Automation Enclosure where the terminal block
is to be mounted. The wiring label lies beneath
the terminal block as shown in the two wiring
diagrams on this page.

connected. Wires are pre-stripped to ½ inch.
Tighten to 9 in-lbs.

7. Test the circuit for electrical faults by turning on
the circuit breaker and checking that the breaker
does not trip and that power is supplied to the
connector of the cable assembly.

Wiring Diagram of the Terminal Block to the Feed and
Load(s)(Single-wide and Left Side Double-wide Enclosures)

LINE

FROM 15 OR 20 AMP

CIRCUIT BREAKER

NEUTRAL

GROUND

AREA FOR MODULE

LOCATION LABEL

WIRING LABEL

Wiring Diagram of the Terminal Block to the Feed and
Load(s)(Right Side Double-wide Enclosures)

TERMINAL

BLOCK

TO BLACK LEAD OF
CABLE ASSEMBLY

TO WHITE LEAD OF
CABLE ASSEMBLY

TO GREEN LEAD OF
CABLE ASSEMBLY

3. Use the two supplied self-tapping pan Phillips
screws (8B x ¼ length) to secure the terminal
block to the Crestron Automation Enclosure.

NOTE: Use copper conductors only – rated 75°C.

4. With the circuit breaker turned off, connect the
circuit feeds (LINE, NEUTRAL, and GROUND)
to the terminal block per the markings provided
on the wiring label (as shown in the following
diagram). Terminal blocks accept one 14 - 10
AWG wire. Wires should be stripped to ½ inch.
Tighten terminal blocks to 9 in-lbs.

NOTE: LINE and NEUTRAL lines can be jumped
to other terminal blocks in the enclosure.

5. Grounding terminal blocks are available in the
cabinet for termination of ground wires. Tighten
to 35 in-lbs. (14 – 10 AWG).

6. Connect each wire from the connector assembly
to the terminal block. Each wire is the same
color as the terminal to which it should be

TO GREEN LEAD OF
CABLE ASSEMBLY

TO WHITE LEAD OF
CABLE ASSEMBLY

TO BLACK LEAD OF
CABLE ASSEMBLY

TERMINAL

BLOCK

WIRING LABEL

GROUND

NEUTRAL

LINE

FROM 15 OR 20 AM

CIRCUIT BREAKER

AREA FOR MODULE

LOCATION LABEL

Module Installation

CAUTION: The module contains electrostatic sensitive
devices (ESDs); unit must be handled from metal chassis
– do not touch PC board or components.

2 • Terminal Block & Module: CLT- & CLX-PWS75 Installation Guide – DOC. 6348A

Crestron CLT- & CLX-PWS75 Terminal Block & Module

NOTE: Modules are to be installed after enclosure has
been completely wired. Refer to the terminal block
installation procedure on the top of the page for details.

1. Use the four supplied self-tapping screws (8B x
¼ length) to secure the module to the enclosure.

2. If the module is being installed below another
module within the enclosure, attach the supplied
module interconnect cable between the two
modules. The following illustration depicts the
area within a double-wide enclosure where the
corners of four modules meet.

NOTE: One wire on the module interconnect cable
may be a different color from the rest. The color has
no bearing on its orientation during installation.

Use Module Interconnect Cable to Wire Module to Module

MODULE

INTERCONNECT

CABLE ATTACHED

CONNECTION

NOT

MADE

3. Connect the module’s female connector to the
male connector that is wired to the terminal
block.

4. Turn on the circuit breaker and verify that the
breaker does not trip.

NOTE: If the fuse is to be replaced, replace only
with the same fuse type and rating. A time lag is
required.

Network Device Wiring

CAUTION: In order to ensure optimum performance
over the full range of your installation topology, Crestron
Certified Wire and only Crestron Certified Wire may be
used. Failure to do so may incur additional charges if
support is required to identify performance deficiencies
because of using improper wire.

CAUTION: Use only Crestron power supplies for
Crestron equipment. Failure to do so could cause
equipment damage or void the Crestron warranty.

CAUTION: Provide sufficient power to the system.
Insufficient power can lead to unpredictable results or
damage to the equipment. Please use the Crestron Power

Calculator (www.crestron.com/calculators

) to help

calculate how much power is needed for the system.

CAUTION: Possible equipment damage if miswired.

NOTE: When installing network wiring, refer to the

latest revision of the wiring diagram(s) appropriate to
your specific system configuration, available from the
Crestron website.

NOTE: Do not power up system until all wiring is
verified. Care should be taken to ensure data (Y, Z) and
ground (G) connections are not crossed when connecting
Cresnet devices.

When calculating the length of wire for a particular
Cresnet run, the wire gauge and the Cresnet power usage
of each network unit to be connected must be taken into
consideration. Use Crestron Certified Wire only. If
Cresnet units are to be daisy-chained on the run, the
Cresnet power usage of each network unit to be daisy­chained must be added together to determine the Cresnet
power usage of the entire chain. If the unit is home-run
from a Crestron system power supply network port, the
Cresnet power usage of that unit is the Cresnet power
usage of the entire run. The wire gauge and the Cresnet
power usage of the run should be used in the following
equation to calculate the cable length value on the
equation’s left side.

Cable Length Equation

40,000

L <

R = 6 Ohms (Crestron Certified Wire: 18 AWG (0.75 MM

Where:

Make sure the cable length value is less than the value
calculated on the right side of the equation. For example,
a Cresnet run using 18 AWG Crestron Certified Wire and
drawing 20 watts should not have a length of run more
than 333 feet. If Cresnet HP is used for the same run, its
length could extend to 1250 feet.

NOTE: All Crestron certified Cresnet wiring must
consist of two twisted pairs. One twisted pair is the +24V
conductor and the GND conductor and the other twisted
pair is the Y conductor and the Z conductor.

NOTE: When daisy-chaining Cresnet units, strip the
ends of the wires carefully to avoid nicking the
conductors. Twist together the ends of the wires that share
a pin on the network connector and tin the twisted
connection. Apply solder only to the ends of the twisted
wires. Avoid tinning too far up the wires or the end
becomes brittle. Insert the tinned connection into the

or 1.6 Ohms (Cresnet HP: 12 AWG (4MM
L = Length of run (or chain) in feet.
P = Cresnet power usage of entire run (or chain).

R x P

2

2

))

))

Installation Guide – DOC. 6348A Terminal Block & Module: CLT- & CLX-PWS75 • 3

Terminal Block & Module Crestron CLT- & CLX-PWS75

Cresnet connector and tighten the retaining screw. Repeat
the procedure for the other three conductors.

NOTE: For larger networks (i.e., greater than 28 network
devices), it may become necessary to add a Cresnet
Hub/Repeater (CNXHUB) to maintain signal quality
throughout the network. Also, for networks with lengthy
cable runs it may be necessary to add a Hub/Repeater
after only 20 devices.

Hardware Hookup

The venting holes on the sides and top of the module
should not be obstructed under any circumstances. If the
module is hot to the touch, consider using forced air
ventilation or implementing additional supplies to
distribute the load.

Hookup Preparation

Prior to making hardware connections, it is assumed that
all wiring is run. This includes the connection of network
connectors. However, the network connectors should not
yet be plugged into the network devices. Use an
ohmmeter to verify that none of the four network
conductors are shorted or crossed. Furthermore, each
network device must have a unique Net ID. If necessary,
refer to the product documentation for the appropriate Net
ID assignment procedure of each device.

Hookup Methods

The hookup diagram on the next page illustrates the home
run and daisy chain methods of connecting the module. It
also illustrates multiple modules within a single Cresnet
system (each module must be installed in its own CAEN
enclosure). Only use the methods shown; do not connect
multiple power supplies together in parallel. If only one
power supply is necessary, use either method connected
to a control system.

NOTE: Always disconnect AC power to the module
supplying power to a Cresnet system before connecting a
network device to that system or installing a card in the
control system.

NOTE: Never connect multiple modules in parallel.

Hookup Procedure

1. Connect the control system and each network device
to a network connector on the module.

2. Connect AC power to the module.

3. If a PC (running SIMPL Windows) is available,
connect the PC to the Cresnet system via the
computer port on the control system.

4. Establish communications with the control system as
described in the latest version of the Crestron
2-Series Control Systems Reference Guide (Doc.

6256) which is available from the Crestron website
(www.crestron.com/manuals).

5. Using Crestron Toolbox, display the network device
tree (Tools | Network Device Tree) to show all
network devices connected to the control system. If a
device is properly connected, it will be listed in the
network device tree.

Problem Solving

Troubleshooting

The table after this paragraph provides corrective action
for possible trouble situations. If further assistance is
required, please contact a Crestron customer service
representative.

CLX-PWS75 Troubleshooting

TROUBLE POSSIBLE

CAUSE(S)

NET
POWER

LED is not
illuminated.

NET
POWER

LED
flashes.

Network
devices
are not
receiving
power.

Module is
not
receiving
power.

Fuse is
blown.

Cresnet
power
requirements
for supply is
exceeded.

Varied

CORRECTIVE

ACTION

Verify that
module is
properly
connected to
terminal block
and terminal
block is properly
connected to
circuit breaker.

Refer to “Hookup
Procedure” and
test the network
for shorts.
Replace fuse.

Confirm load on
supply. Add more
power supplies to
the network if
necessary.

From SIMPL
Windows, select

Tools | Network
Analyzer and

perform voltage­level tests on the
troubled network
device. Refer to
the SIMPL
Windows help file
for details.

4 • Terminal Block & Module: CLT- & CLX-PWS75 Installation Guide – DOC. 6348A

Crestron CLT- & CLX-PWS75 Terminal Block & Module

CLX-PWS75 Hardware Hookup

HOME RUN METHOD

NETWORK

DEVICE

CLX-PWS75

POWER EXPANSION
NETWORK DATA LINK

CLX-PWS75

TO EXPANSION CLX-PWS75

NETWORK DATA LINK
TO ADDITIONAL
EXPANSION CLX-PWS75

DAISY CHAIN METHOD

Installation Guide – DOC. 6348A Terminal Block & Module: CLT- & CLX-PWS75 • 5

DEVICE

NETWORK

DEVICE

NETWORK

SYSTEM

CONTROL

Crestron CLT- & CLX-PWS75 Terminal Block & Module

Further Inquiries

If you cannot locate specific information or have
questions after reviewing this guide, please take
advantage of Crestron's award winning customer service
team by calling the Crestron corporate headquarters at
1-888-CRESTRON [1-888-273-7876]. For assistance in
your local time zone, refer to the Crestron website
(www.crestron.com

) for a listing of Crestron worldwide

offices.

You can also log onto the online help section of the
Crestron website to ask questions about Crestron
products. First-time users will need to establish a user
account to fully benefit from all available features.

Future Updates

As Crestron improves functions, adds new features, and
extends the capabilities of the module, additional
information may be made available as manual updates.
These updates are solely electronic and serve as
intermediary supplements prior to the release of a
complete technical documentation revision.

Check the Crestron website periodically for manual
update availability and its relevance. Updates are
identified as an “Addendum” in the Download column.

Return and Warranty Policies

Merchandise Returns / Repair Service

1. No merchandise may be returned for credit, exchange or service
without prior authorization from CRESTRON. To obtain
warranty service for CRESTRON products, contact an authorized
CRESTRON dealer. Only authorized CRESTRON dealers may
contact the factory and request an RMA (Return Merchandise
Authorization) number. Enclose a note specifying the nature of
the problem, name and phone number of contact person, RMA
number and return address.

2. Products may be returned for credit, exchange or service with a
CRESTRON Return Merchandise Authorization (RMA) number.
Authorized returns must be shipped freight prepaid to
CRESTRON, 6 Volvo Drive, Rockleigh, N.J. or its authorized
subsidiaries, with RMA number clearly marked on the outside of
all cartons. Shipments arriving freight collect or without an RMA
number shall be subject to refusal. CRESTRON reserves the right
in its sole and absolute discretion to charge a 15% restocking fee
plus shipping costs on any products returned with an RMA.

3. Return freight charges following repair of items under warranty
shall be paid by CRESTRON, shipping by standard ground
carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.

CRESTRON Limited Warranty

CRESTRON ELECTRONICS, Inc. warrants its products to be free from
manufacturing defects in materials and workmanship under normal use
for a period of three (3) years from the date of purchase from
CRESTRON, with the following exceptions: disk drives and any other
moving or rotating mechanical parts, pan/tilt heads and power supplies
are covered for a period of one (1) year; touchscreen display and overlay
components are covered for 90 days; batteries and incandescent lamps
are not covered.

This warranty extends to products purchased directly from CRESTRON
or an authorized CRESTRON dealer. Purchasers should inquire of the
dealer regarding the nature and extent of the dealer's warranty, if any.

CRESTRON shall not be liable to honor the terms of this warranty if the
product has been used in any application other than that for which it was
intended or if it has been subjected to misuse, accidental damage,
modification or improper installation procedures. Furthermore, this
warranty does not cover any product that has had the serial number
altered, defaced or removed.

This warranty shall be the sole and exclusive remedy to the original
purchaser. In no event shall CRESTRON be liable for incidental or
consequential damages of any kind (property or economic damages
inclusive) arising from the sale or use of this equipment. CRESTRON is
not liable for any claim made by a third party or made by the purchaser
for a third party.

CRESTRON shall, at its option, repair or replace any product found
defective, without charge for parts or labor. Repaired or replaced
equipment and parts supplied under this warranty shall be covered only
by the unexpired portion of the warranty.

Except as expressly set forth in this warranty, CRESTRON makes no
other warranties, expressed or implied, nor authorizes any other party to
offer any warranty, including any implied warranties of merchantability
or fitness for a particular purpose. Any implied warranties that may be
imposed by law are limited to the terms of this limited warranty. This
warranty statement supersedes all previous warranties.

Trademark Information

All brand names, product names, and trademarks are the sole property of their respective
owners. Windows is a registered trademark of Microsoft Corporation. Windows95/98/Me/XP
and WindowsNT/2000 are trademarks of Microsoft Corporation..

Installation Guide – DOC. 6348A Terminal Block & Module: CLT- & CLX-PWS75 • 6