NSI ND 4600 Operation Manual page 5

This built-in test function allows you to connect and test lamps at full intensity without the
need of a controller. When dipswitch #6 is off and your dimmer pack is receiving AC power
and a controller is not connected lamps will light to full intensity. Internal jumper J2 is used in
place of dipswitch # 6 on old style units.
Individual yellow LED's (Light Emitting Diodes) for each channel indicate when the dimmer is
receiving control signals. This feature is an excellent trouble-shooting tool in identifying
possible problems with signal transmissions or defective lamps and fixtures.
This is the main power cord for your dimmer pack which ultimately carries all of the ac power
consumed by lights connected to the dimmer. It must be connected to a power source capable
of supplying the total power drawn by the lights (see specification section of this manual for
details on maximum power capability).
WARNING: Do not remove grounding prong of AC plug. To do so may cause exposure to
potentially lethal voltage levels and will void the warranty on this product.
This green LED (Light Emitting Diode) will light whenever the dimmer pack is receiving AC
power and functioning properly.
Both the ND 4600 and ND 5000 are equipped with safety circuit interruption devices to protect
the units from becoming overloaded. The ND 4600 utilizes fusing while the ND 5000 features
a resetable external circuit breaker as well as internal fusing.
NSI ND 4600 and ND 5000 dimmer packs are designed to be mounted vertically. Each dimmer
pack is provided with two mounting flanges or ears designed for securing to the center of truss
bars. Most truss bars are already properly drilled to accept mounting of dimmers, however in
some cases you may need to drill holes in your truss bar to accommodate your dimmer pack.
AUTO TEST
LEVEL LED's
AC POWER CABLE
POWER INDICATOR
CIRCUIT PROTECTION
MOUNTING
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