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Crestron® 8 Channel Universal Dimmer Module

At a Glance

Crestron® 8 Channel Universal Dimmer Module with 2 feeds and 277 voltage

Proposition 65 Warning for California Residents

Provides eight channels of technologically advanced universal dimming for 277 Volt commercial lighting applications. Supports LED, incandescent, magnetic low-voltage, electronic low-voltage, and 2-wire dimmable fluorescent lighting loads. Installs in a CAEN wall mount automation enclosure as part of a complete Crestron® centralized lighting control system.Photo shows module with terminal block on left. CLT-2DIMU8-277 terminal block sold separately.Visit the Crestron® Lighting Fixture Compatibility page to find out which Crestron lighting devices have been tested and are compatible with third party lighting fixtures.

The Crestron® CLX-2DIMU8-277 is an eight-channel, two-feed universal dimmer module designed for 277V lighting system applications. It installs in a CAEN enclosure and provides control of a wide range of dimmable lighting load types including electronic and magnetic low-voltage, LED, incandescent, and 2-wire fluorescent. It may also be used to switch non-dimmable lighting loads. Dual feed capability provides two independent four-channel dimmers in one module space. Each output channel is rated for 692 Watts (2.5 Amps), with a total module rating of 5540 Watts (20 Amps) when fed from two separate 15 or 20 Amp feeds.

Auto-Detecting Universal Dimming

Under normal operation, the CLX-2DIMU8-277 detects the connected load type on each channel and selects the appropriate operating mode for each channel automatically. Reverse phase (trailing edge) mode supports incandescent and electronic low-voltage load types, while forward phase (leading edge) mode handles magnetic low-voltage, neon, and other inductive load types. The operating mode may also be selected manually via software or programmatically via the control system.

Ultra-Reliable Performance

The CLX-2DIMU8-277 is a technologically advanced universal dimmer that delivers unparalleled reliability and optimal dimming performance, even in noisy electrical environments. Patented “Constant Power” technology dramatically reduces lamp flicker and maximizes stability under noisy power conditions. This cutting-edge technology quickly adjusts the dimmer’s on-time response to changes in input voltage so that power is constantly and consistently delivered to the load. Voltage sag and peak overshoot no longer cause changes in load output, ensuring reliable lighting performance and a comfortable working environment.

To further reduce lamp flicker, the CLX-2DIMU8-277 features proprietary zero-cross filter technology which compensates for line voltage and frequency fluctuations for superior immunity to noise on the power line. Built-in protection against over-current, over-voltage, and over-temperature conditions helps to prevent failure due to temporary wiring faults and other abnormalities. An air-gap relay on each channel output allows individual circuits to be serviced without disabling the entire module. Low-maintenance convection cooling with over-sized heatsinks affords silent operation with no mechanical components to wear out.

Centralized Lighting Cabinet Installation

Crestron CLX series lighting control modules are designed to be installed in a CAEN wall mount enclosure. Available in a variety of sizes, CAEN enclosures provide a scalable, high-density centralized lighting control solution for any-sized commercial facility. A selection of CLX module types is offered to accommodate a wide range of load types and system configurations.

Termination of high-voltage wiring to the CLX-2DIMU8-277 module is facilitated using a CLT-2DIMU8-277 terminal block, which is sold separately to enable termination of the wiring prior to installing the module. This terminal block mounts beside the module within the enclosure. Low-voltage control signals are bussed between each of the modules within an enclosure via a simple 5-wire link (interconnect jumpers included), which terminates to a single terminal block (model CAEN-BLOCK, sold separately) at the bottom of the enclosure.

Cresnet® Communications

The CLX-2DIMU8-277 interfaces with a Crestron control system (a.k.a., control processor or automation processor) via Cresnet. Cresnet is a simple 4-wire network bus that provides the communications backbone for a system of Crestron lighting dimmers, switches, keypads, shades, thermostats, and other devices.

Emergency Lighting Control

The CLX-2DIMU8-277 is UL® 924 and CSA® C22.2 No. 141-15 listed for use in controlling emergency lighting loads. In the event of a power failure, a contact closure from a power loss sensor (Crestron GLS-PLS-120/277, sold separately) activates the override mode in the CLX-2DIMU8-277 to turn on each designated lighting load if it is off (assuming line power is supplied by a backup power source). The override dimming level can be preset to any value when commissioning the lighting system, so even if the load is already on prior to a power failure, it will change to the preset level when override mode is activated.

Key Features

Eight-channel universal dimmer module for commercial lighting applications

Installs in a Crestron® CAEN enclosure

Supports dimmable LED, incandescent, electronic low-voltage, magnetic low-voltage, and 2-wire fluorescent lighting loads

Single or dual feeds — two four-channel dimmers in one module

Rated 2.5 Amps per channel at 277 Volts AC

Auto load type detection

Forward and reverse phase modes

Customizable dimming curves via software

Patented Constant Power dimming technology

Zero-cross filter technology

Extreme stability under noisy power line conditions

Dramatically reduced lamp flicker

Over-current, over-voltage, and over-temperature protection

Built-in air gap relay per channel

Convection cooled for silent operation

Closure-activated override mode

UL® 924 and CSA® C22.2 No. 141-15 listed for emergency lighting control

Crestron system integration via Cresnet®

Easy termination using a CLT-2DIMU8-277 terminal block (sold separately)

CEC Title 24 2013 compliant