Dove Systems DM 624 RM User Manual

OWNER'S MANUAL

DIMMERMASTER 624

DIGITAL DIMMER

Dove Systems

3563 Sueldo Street Unit E

San Luis Obispo, CA 93401

[phone]

fax [phone]

[e-mail]

www.dovesystems.com

DM624 Rev. 1.10 02/26/98

TABLE OF CONTENTS

1) SETUP AND CONNECTION 1
A) Mechanical Installation 1
B) Rack Mounting 1
C) Electrical Installation 1
D) Grounding 1
E) Load Connections 2
F) Control Connections and Overtemp Sensing 2
G) Channel Selection and Testing 3
H) Indicators 3

2) TROUBLESHOOTING CHART 3

3) WARRANTY INFORMATION 4

PAGE

1. SETUP AND CONNECTION

A) MECHANICAL INSTALLATION
Remove all packing material from the unit. Make certain that all holes are free of obstruction on all sides of the unit.

Replace all packing material in the carton and store it for reuse.
For portable use, set the Dimmermaster on a smooth, cool surface. Up to 2 packs may be stacked vertically. Do not

remove the feet when stacking. Do not block any vent holes. Make certain that the vent holes all have at least 6 inches
of free air around them. It is essential that this unit have adequate cooling for safe, reliable performance. Maximum
air temperature must not exceed 40E Centigrade (105E Fahrenheit).

B) RACK MOUNTING
The Dimmermaster may be rack mounted in a standard EIA 19-inch equipment rack. The rubber feet may be

removed. Do not remove the top and bottom panels. The Dimmermaster occupies 5.25 inches of space in the rack,
or three rack units. For best cooling, an additional 1.75 inches, or one rack unit, between packs is recommended. The
rack should be ventilated from the top at a minimum of 120 CFM.

C) ELECTRICAL INSTALLATION
The dimmer must be supplied with an amount of current equal to the combined total current of the lamps it controls.

To calculate this current, use the formula amps = watts ÷ volts. For example, if six 2400-watt, 120 volt lighting units
are connected to the dimmer, it would require 14,400 ÷ 120, or 120 amps total power. This is available from a three
phase 4 wire 40 amp or a single phase 3 wire 60 amp service. Usually this much power is not required and a 30 - 50
amp service may be used with lower power loads plugged in.

The Dimmermaster accepts either three phase or single phase power input and is factory configured for three
phase. Line to neutral voltage is always 120 volts. Line 1 to Line 2 voltage is 208 volts in three phase service
and 240 volts in single phase service. It is very important that the input voltages be checked with a meter to
insure that they are correct. A mistake can place 208 to 240 volts across a 120 volt lamp. The breakers will
protect the unit but may not save the lamps. A double check of voltages before applying power can guard
against such disaster.

The power input connector is a terminal block. Each leg of the power feed connects to one terminal on the dimmer
pack. These are marked "L1", "L2", and "L3". The neutral connection is made on the neutral bar, just to the left of the
power block. The ground connection is made on the ground terminal, just to the right of the power block. The pack has
circuit breakers to protect each dimmer channel, but the primary circuit protection and disconnect is to be provided
by the user.

When single phase service is used switch SW1, located near the center of the board, must be moved from the "6"
position to the "4" position. The power input terminal marked "L3" is not used. The two blue wires wrapped with red
tape must be moved to the terminal marked "L1" and the two wrapped with black tape to "L2". The tiny blue wire stays
in terminal "L3". Please refer to the diagrams at the rear of this manual.

D) GROUNDING
The term GROUNDING refers to a separate wire with green insulation which is connected from the equipment case

to earth ground (often through a properly grounded conduit system). This is not the same as the neutral or common
and must not be confused with them. The neutral is a separate, load-carrying circuit conductor. The ground conductor
should not normally carry current.

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