Doug Fleenor Design DMX24DIM User Manual

DOUG FLEENOR DESIGN, Inc.

Model DMX24DIM Installation and

Operations Manual

Manual revision
November 23, 2010

Doug Fleenor Design, Inc.
396 Corbett Canyon Road
Arroyo Grande, CA 93420

[phone] Voice and FAX

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Product description

The DMX24DIM is a 24 channel, 100 Watt per channel dimmer pack. It is fed by a
single 120VAC 15A branch circuit. Each of the dimmers can be separately controlled
using a DMX512-based lighting controller. The DMX24DIM is housed in an enclosure
suitable portable use or for mounting in a standard 19" rack. The DMX24DIM occupies
1U of rack space.

Safety warnings

• There are no user serviceable parts in the DMX24DIM. Servicing should be
referred to qualified service personnel.

• Do not connect or disconnect loads to the DMX24DIM with the power on.

Environmental

Operating temperature: 0-40º C
Operating humidity: 10-90% non-condensing
Indoor use only

Electrical ratings

Input: 120VAC, 60Hz, 15A
Output: 24 outputs, 120VAC, 100W each, 1800W maximum total

Certification

ETL Listed to the UL508 standard

Mounting/installation

The DMX24DIM can be used as a portable unit or it can be mounted in a standard 19"
equipment rack. Care must be taken to allow for unobstructed airflow around the unit.
There must be at least 6 inches of clearance in front of the DMX24DIM and two inches
of clearance on the left side of the enclosure (as viewed from the front panel). No blank
spaces are required above or below the DMX24DIM when it is rack mounted.

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Power input (line) wiring

The DMX24DIM should be connected to a standard 15A 120VAC grounded outlet. The
outlet must be protected by an appropriate over-current protection device.

Note that if all outputs are loaded to 100W and all outputs are set to full, the 15A
branch breaker feeding the DMX24DIM will trip. If the application requires all dimmers
to be fully loaded, the DMX24DIM must be fed by a 20A branch breaker and an
appropriate receptacle. The standard 15A mains plug on the DMX24DIM must be
replaced with an appropriate 20A connector.

Power output (load) wiring

Each output can supply a 100W (maximum) 120VAC load. Each output uses a
polarized ungrounded parallel blade connector (NEMA1-15R). Cables should only be
connected and disconnected while the dimmer outputs are off or the input power to the
DMX24DIM is removed.

Control cable wiring

Standard 5 pin XLR cables should be used to connect DMX512 signals to the
connectors on the front panel of the DMX24DIM. A male input is provided and a
passive female “thru” output is provided. There is no internal termination. The last
device in the DMX512 daisy chain should be fitted with a DMX512 terminator.

Only pins 1, 2, and 3 are used by the DMX24DIM, however all 5 pins are passed
through to the “thru” connector.

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Setting the address switches

The front panel address switches are used to select the DMX512 starting address for
the DMX24DIM. Any starting address from 1 - 512 can be selected. The address
shown on the switches will be the DMX512 address for the first dimmer output. The
next 23 consecutive DMX512 levels will be applied to the remaining dimmer channels.

When the address switches are set to 000, the DMX24DIM operates as if the address
switches were set to 001.

The address switches are also used for a local test function described below.

Local control

Local control mode is used to turn on an output without the use of a DMX512 signal
source. To use local control, set the DMX address switches to 601 to turn on channel
1, 602 for channel 2, etc.

LED indicators

The LED indicators on the front of the DMX24DIM have the following functions:

LED label Function

SIGNAL On when DMX is present, flashes when local control is active

MIMIC 1 Tracks the current level of dimmer 1 for troubleshooting purposes

PWR On when power is on

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Loss of DMX512 signal

Upon loss of the DMX512 input, the DMX24DIM will begin fading all of its outputs to
zero. The fade out time is about 60 seconds from the loss of signal.

Maintenance and cleaning

The DMX24DIM’s fan intake on the front panel and the exhaust ports on the left side of
the enclosure should be cleaned periodically (see photos below). The frequency of
cleaning depends upon the working environment and the amount of time the dimmers
are running. Compressed air and a soft cloth should be used to remove excess dirt and
lint. Power to the DMX24DIM must be disconnected while cleaning.

Fan operation

The fan in the DMX24DIM will run any time any the level of any dimmer in the pack is
above 0%. The fan will continue to run for about 30 seconds after all dimmers are at
zero.

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Warranty

Products manufactured by Doug Fleenor Design carry a five year parts and labor
warranty against manufacturing defects. It is the customer's responsibility to return the
product to Doug Fleenor Design (at the customer's expense) for service. Doug Fleenor
Design will repair the unit and return it to the customer (at Doug Fleenor Design's
expense). If a trip is necessary to the customer's site to solve a problem, the expenses
of the trip must be paid by the customer.

1. Note that this warranty is against Manufacturing Defects. It does not include damage

due to misuse or abuse. Most non-warranty repairs are made for a fixed $30.00 fee.

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