Crestron CLX-1DIMU4-HP Manual

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The Crestron® CLX-1DIMU4-HP and CLX-2DIMU8 dimmer modules

provide universal dimming control for LED, incandescent, magnetic

low-voltage, electronic low-voltage, and 2-wire dimmable fluorescent

lighting loads.

The dimmer modules pair with CLT-1DIMU4 and CLT-2DIMU8 terminal

blocks to facilitate simple system wiring. The terminal blocks ship

separately to allow termination and testing of the field wiring prior to

the installation and setup of the CLX-1DIMU4-HP and CLX-2DIMU8.

The CLX-1DIMU4-HP ratings:

• Power feed: One - 16 A, 120 VAC

• Dimming channels: Four - 10 A (1,200 W) max per channel

• Maximum output: 16 A (1,920 W)

The CLX-2DIMU8 ratings:

• Power feed: Two - 16 A, 120 VAC

• Dimming channels: Eight - 4 A (480 W) max per channel

• Maximum output: 32 A (3,840 W)

The dimmer modules and terminal blocks are designed to install in a

CAEN enclosure (not supplied) as part of a centralized lighting control

system.

Check the Box

Item Qty

CLX-1DIMU4-HP or CLX-2DIMU8* 1

Cable, Interconnect (P/N 4500250) 1

Screw, 8-8B x 1/4 in., Pan Head, Phillips (P/N 2007277) 4

CLT-1DIMU4 or CLT-2DIMU8* 1

Label, Terminal Block, 120 V, Left 1

Label, Terminal Block, 120 V, Right 1

Screw, 8-8B x 1/4 in., Pan Head, Phillips (P/N 2007277) 2

* The dimming modules and terminal blocks ship separately.

Installation Overview

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.

Contact Crestron customer support if an assembled UL® Listed panel

is required. This includes complete in-factory system configuration and

assembly by Crestron for an additional fee.

WARNING:

• The CLX-2DIMU8 can be powered from multiple circuit breakers.

• A licensed electrician must mount these devices into the CAEN

enclosure in accordance with all national and local codes.

• When connecting to a third-party arc fault breaker, ensure

the load does not exceed 1,000 watts total. Crestron certified

breakers have a 2,000-watt limit.

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° to 104°F (0° to 40°C). The relative humidity must be

0% to 90% (noncondensing).

IMPORTANT NOTES: When controlling magnetic low-voltage

transformers:

• Do not use to dim or switch magnetic transformers

greater than 100 VA for the CLX-2DIMU8 and 300 VA for

the CLX-1DIMU4-HP.

• Do not hot plug transformers or add or remove bypass jumpers

while the output channel is energized.

• Do not mix magnetic and electronic transformers on the same

output channel.

Failure to follow the guidelines above can lead to damage of the

dimmer module and transformers.

Install and Wire the Terminal Block

Install the Terminal Block

Install the terminal blocks into the lowest available space in the CAEN

enclosure. Mount additional terminal blocks into the next space above

it. Refer to the CAEN Installation Guide (Doc. 5940) at

www.crestron.com for complete mounting information.

1. Turn the power OFF at the circuit breaker(s) or fuse panel(s).

2. Remove the backing from the terminal block label. Align the holes

on the label with the holes on the enclosure and attach the label

to the enclosure.

• Use the Left Terminal Block Label when mounting into a

single-wide CAEN enclosure or into the left side of a double-

wide CAEN enclosure

• Use the Right Terminal Block Label when mounting into the

right side of a double-wide CAEN enclosure.

3. Place the terminal block over the terminal block label and secure

the terminal block to the enclosure using two supplied 8-8B x 1/4

in. screws. The colors on the terminal block match the colors on

the terminal block label.

CAUTIONS:

• Bypass jumpers are provided to test the circuits and to protect

the module during installation. When properly secured by five

screws, the jumpers on the black and red sections of the terminal

block shorts line in to dim out so that the circuit is energized. Do

not remove the bypass jumpers until all feed and load wiring has

been completed, the circuit has been tested for electrical faults,

and the module has been installed. Refer to “Module Installation

and Wiring” for details.

• Do not remove the jumpers on the white sections of the terminal

block that tie the neutral in and neutral out wires.

Wire the Terminal Block

Connect the feed (Line and Neutral) and the load (controlled circuit)

wires to the terminal block. For 2-feed systems, the two power feeds

can be different phases. Follow the labeling on the wiring label.

NOTE: Use copper conductors only, rated 75 °C or greater.

When connecting wires:

• Use 14-10 AWG wire.

• Strip wire to 1/2 in. (13 mm).

• Tighten the terminal blocks to 9 in.-lb.

Connect the Ground wires to the ground bus inside the enclosure:

• Strip wire to 1/2 in. (13 mm).

• Tighten 14-10 AWG wire to 35 in.-lb.

• Tighten 8 AWG wire to 40 in.-lb.

• Tighten 6-4 AWG wire to 45 in.-lb.

Connect the Feed and Load Wires to the Terminal Block

(CLT-2DIMU8 Terminal Block Shown)

LINE 1

Connection from a 15

or 20 A circuit

breaker

Bypass

jumpers

Terminal

block

To loads

Left-side

wiring label

LINE 2

Connection from a 15

or 20 A circuit

breaker

Ground

bus

NEUTRAL

GND

CLX-2DIMU8

DIM 1

DIM 2

DIM 3

DIM 4

DIM 5

DIM 6

DIM 7

DIM 8

N IN 1

N OUT 1

N OUT 2

N OUT 3

N OUT 4

N IN 2

N OUT 5

N OUT 6

N OUT 7

N OUT 8

LINE 1

LINE 2

2 FE ED

8 DI M

120VAC 60 Hz

SINGLE PHASE

16A MAX/FEED

Module

location

label

NOTES: When wiring the terminal block on right-side double-wide, the

connection points on the label are reversed.

Test the Terminal Block Wiring:

1. Turn the power ON at the circuit breaker(s) or fuse panel(s).

2. Verify that the circuit breakers do not trip.

3. Verify that the power is delivered to the proper loads.

4. Repeat steps 1-3 for the other circuit breaker.

Install and Wire the Dimming Module

Install the dimmer module alongside the terminal block. Refer to

the CAEN Installation Guide (Doc. 5940) at for ww w.crestron.com

complete mounting information.

CAUTION: The module contains electrostatic sensitive devices (ESDs);

the unit must be handled from the metal chassis. Do not touch the PC

board or components.

NOTE: Install the dimmer module after the enclosure has been

completely wired. Refer to “Install and Wire the Terminal block” for

details.

Install the Dimming Module

1. Turn the power OFF at the circuit breaker(s) or fuse panel(s).

2. Secure the dimming module to the enclosure using four

8-8B x 1/4 in. screws. The wires on the dimming module should

face the terminal block and align with the terminal block label.

3. Connect the wires from the dimming module to the terminal

block. Each wire exits the module directly in line with, and is the

same color as, the terminal to which it should be connected.

Wires are prestripped to 1/2 in. (13 mm). Tighten to 9 in.-lb.

NOTE: The CLX-2DIMU8 is powered from the LINE 1 connection.

Wiring the Terminal Block to the Module

(CLT-2DIMU8 and CLX-2DIMU8 Shown)

Black from breaker

White from panel

Red to loads

White to loads

CLX-2DIMU8

DIM 1

DIM 2

DIM 3

DIM 4

DIM 5

DIM 6

DIM 7

DIM 8

N IN 1

N OUT 1

N OUT 2

N OUT 3

N OUT 4

N IN 2

N OUT 5

N OUT 6

N OUT 7

N OUT 8

LINE 1

LINE 2

2 F EED

8 D IM

120VAC 60 Hz

SINGLE PHASE

16A MAX/FEED

Install the Module Interconnect Cable (Optional)

If multiple modules are installed within an enclosure, use the module

interconnect cable (supplied) to pass control system communication

to the module. The illustration below shows 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.

Using Module Interconnect Cable to Wire One Module to Another

Module interconnect

cable attached

Connection not

made

CLX-1DIMU4-HP/CLX-2DIMU8/CLT-1DIMU4/CLT-2DIMU8

Dimmer Module and Terminal Block

Test the Dimming Module Wiring:

1. Turn the power ON at the circuit breaker or fuse panel.

2. Verify the following:

• The circuit breakers do not trip.

• The power is delivered to the proper loads.

• The green PWR LED on the module lights.

3. Repeat steps 1 and 2 for the other circuit breaker.

4. Turn the power OFF at the circuit breaker or fuse panel.

Remove the Bypass Jumpers

NOTE: Before removing the bypass jumpers, make sure to properly

connect and program the control system that provides functionality to

the system.

1. Turn the power OFF at the circuit breaker or fuse panel.

2. Remove the bypass jumpers on the black and red sections of the

terminal block. The jumpers on the white sections of the terminal

block must remain installed.

Removing the Bypass Jumpers after Testing (CLT-2DIMU8 Shown)

Jumper removed

Jumper installed

Jumper removed

Jumper installed

CLX-2DIMU8

DIM 1

DIM 2

DIM 3

DIM 4

DIM 5

DIM 6

DIM 7

DIM 8

N IN 1

N OUT 1

N OUT 2

N OUT 3

N OUT 4

N IN 2

N OUT 5

N OUT 6

N OUT 7

N OUT 8

LINE 1

LINE 2

2 F EED

8 D IM

120VAC 60 Hz

SINGLE PHASE

16A MAX/FEED

3. Turn the power ON at the circuit breaker or fuse panel.

Test the System

Use Local mode to verify that each load is connected to the proper

output on the modules. Refer to the illustration below for button

locations.

1. Press the SETUP button to enter Local mode. Output 1 turns on

and its associated LED lights.

2. Press the mode button to cycle through the dimming modes until

the desired dimming mode is selected. The dimming mode is

identified by a flashing LED.

• Yellow/green: Auto-load detection, reverse-phase dimming.

• Yellow/red: Auto-load detection, forward-phase dimming.

• Green: Forced reverse-phase dimming.

• Red: Forced forward-phase dimming.

• Red/green: Forced non-dim (switch).

3. Press the SETUP button to accept the dimming mode and to

advance to output 2. Repeat step 2 for the remaining outputs.

4. After the last output is accepted, all loads turn on. Confirm that

all outputs are operating correctly.

5. Press the SETUP button to turn off all outputs and LEDs and exit

Local mode.

NOTE: Changing the dimming mode using the local controls is

disabled if the dimming mode is defined in the control system

program.

Mode and SETUP Button Locations

Setup button

Mode button

Operation

NOTE: Before using the dimming module, ensure the device is using the

latest firmware. Check for the latest firmware for the dimming module

at . Load the firmware onto the device www.crestron.com/firmware

using Crestron Toolbox™ software.

Buttons

• SETUP - Press to enter Local mode or to identify the device when

Touch Settable ID (TSID) is active.

• Mode - Press and hold to display the current dimming phase

modes of all channels.

LEDs

• POWER - Lights to indicate that the device is receiving power.

• NET - Lights to indicate that the device has been polled on the

Cresnet network within the last two seconds.

• 1 8– - The LED lights red to indicate that the load is on, flashes to

indicate the dimming mode, or flashes to indicate an error on the

output.

Troubleshoot Symptoms

The following table provides corrective action for possible trouble

situations. If further assistance is required, please contact a Crestron

Customer service representative.

Symptom Issue Action

The output does

not appear to dim

below 50%.

The dimmer

channel may have

been damaged.

Contact Crestron customer

service.

The connected

LED load buzzes

and flickers when

dimmed.

An incompatible

LED fixture is

installed.

Verify the connected LED

load is dimmable and

has been tested. Refer to

Crestron’s Light Fixture

Compatibility Listing

at www.crestron.com/

resources/lighting-

fixture-compatibility.

An incorrect

dimming phase is

selected.

Set the dimming phase

to Auto or Reverse Phase

mode to reduce current

spikes to load.

The connected

LED load flickers

or turns off when

dimmed to a low

level.

The minimum

dimming level is set

too low.

Adjust the minimum

dimming level to match the

minimum level required by

the LED load.

The LED load does

not dim to a low

brightness level.

An incorrect

dimming phase is

selected.

Set the dimming phase to

Forward Phase mode.

The dimming module displays error codes using the 1 - 8 LEDs. The LED

flashes a pattern, such as 1-2 or 2-4, to indicate an error on that output.

For example, the LED during a 1-2 error flashes one time, pauses for

one second, flashes two times, pauses for two seconds, and then the

pattern repeats until the error is corrected. The LED during a 2-4 error

flashes two times, pauses for one second, flashes four times, pauses for

two seconds, and then the pattern repeats until the error is corrected.

Refer to the following table for possible corrections.

Error

Code

Error Name Fault Description

1-1 Dimming

Module in

Bootloader

The firmware upgrade has failed or has been

aborted. Power-cycle the unit to reinitiate the

firmware upgrade.

1-2 Dimming

Processor

Unresponsive

Communications to the corresponding dimming

processor have failed. Confirm that power is

supplied to the line input(s) and then reboot the

unit.

1-3 Dimming

Processor

Firmware

Upgrade

Failed

The firmware upgrade has failed or has been

aborted, leaving the dimming processor in

bootloader. Reinitiate the firmware upgrade

from Crestron Toolbox.

Error

Code

Error Name Fault Description

2-1 Overcurrent

Tripped

A short circuit or overload has been detected

and the output has been switched off.

• Check wiring for shorts.

• Verify that the total load connected

to the channel is less than 4 A for the

CLX-2DIMU8 and less than 10 A for the

CLX-1DIMU4-HP.

• Verify that the dimming phase is

not set to Forward Phase mode if

an incandescent or electronic load is

connected.

The channel attempts to resume normal

operation after receiving another command to

turn on.

2-2 Shorted FET The dimmer channel has failed. Disconnect the

load and contact Crestron Technical Support.

2-3 Over-

temperature

Tripped

The dimming channel has overheated and shut

down due to excessive load.

• Verify that the total load connected

to the channel is less than 4 A for the

CLX-2DIMU8 and less than 10A for the

CLX-1DIMU4-HP.

• Verify that the panel ventilation is not

blocked.

The channel resumes normal operation after

cooling.

2-4 Overvoltage

Detected

High voltage spikes have been detected and

output has been shut down. If a magnetic load

is connected, verify that the dimming phase has

been set to Forward Phase mode.

3-1 Zero Cross

Fault

The dimmer is unable to lock onto the AC line.

If the unit is powered by a generator, verify that

generator output is 50/60 Hz and stable.

3-2 No AC Power

on LINE 2

The CLX-2DIMU8 powers itself from LINE 1

input.

Verify that the breaker providing LINE 2 input

power is energized.

For Additional Information

Scan or click the QR code for detailed product information.

CLX-1DIMU4-HP CLX-2DIMU8

CLT-1DIMU4 CLT-2DIMU8

Compliance and Legal

Original Instructions: The U.S. English version of this document is the original instructions. All

other languages are a translation of the original instructions.

This product is Listed to applicable UL® Standards and requirements tested by Underwriters

Laboratories Inc.

Ce produit est homologué selon les normes et les exigences UL applicables par Underwriters

Laboratories Inc.

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 modifications not expressly approved by the manufacturer responsible

for 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 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.

Industry Canada (IC) Compliance Statement

CAN ICES-3 (B)/NMB-3(B)

SCCR: 30 kA

The product warranty can be found at .www.crestron.com/warranty

The specific patents that cover Crestron products are listed at www.crestron.com/legal/

patents.

Certain Crestron products contain open source software. For specific information, please visit

www.crestron.com/opensource.

Crestron and the Crestron logo 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.

Crestron Electronics, Inc.

15 Volvo Drive, Rockleigh, NJ 07647

Tel: 888.CRESTRON

Fax: 201.767.7576

www.crestron.com

Quick Start - Doc. 7628F

(2053364)

02.19

Specifications subject to

change without notice.

Produkt Specifikationer

Mærke:	Crestron
Kategori:	Ikke kategoriseret
Model:	CLX-1DIMU4-HP
Type:	Lysdæmper
Vekselstrømsindgangsspænding:	120 V
Bredde:	176 mm
Dybde:	87 mm
Højde:	194 mm
Relativ luftfugtighed ved drift (H-H):	10 - 90 %
Driftstemperatur (T-T):	0 - 40 °C