Leprecon VX Series Dimmer - Manual (Page 3)

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1. General Description
The Leprecon VX and MX Dimmers are designed to meet the demanding requirements of the
lighting industry. Emphasis was placed on designing a system that is flexible, reliable, and
serviceable. The latest digital technology, combined with a modular design, bring a new level of
performance and ease of use to portable and permanent dimming systems.
Because of the many custom features available on VX / MX systems, the features described in
this manual may not cover all available options of the dimmer.
1.1. Standard Features:
• Modular Dimming & Control Electronics
Dimmer and control electronics can be serviced from the front panel, without removing the
dimmer from the rack or enclosure.
• DMX Control Input
Digital control electronics using a patented circuit allows simultaneous DMX-512 and analog
control input, with a highest-takes-precedence logic. Parallel input and output for DMX 512 allows
daisy-chaining racks together in one system. DMX start address switches allow the dimmers to be
assigned to start receiving data at any of the 512 addresses.
Full digital control electronics provides accurate dimmer output tracking from channel to channel,
eliminating any variance in output levels when multiple dimmer channels are patched together.
• Analog Control Input
Two 8 pin Jones type male plugs are provided for 0-10 DC analog control. Control cable and pin
connections are compatible with other Leprecon dimmers.
• Channel Breakers
The circuit breakers used in the VX and MX dimmers are fast response magnetic breakers. The
quality of the breaker contributes to the reliable operation of the dimmer pack, even when shorted
lamps or cables are plugged into the dimmer. The front panel toggle also allows the breaker to be
used as a switch for the dimmer channel.
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Fan Cooling
Two fans are used in the VX and MX dimmers to keep the electronics at a safe operating
temperature. The fans are controlled by a thermostat to keep fan noise to a minimum. When the
pack is lightly loaded, the fans turn at a slower rate, and are accelerated to full speed when the
temperature inside the pack increases.
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Programmable non-dim operation (VX Model only)
Any of the channels on the pack can be set for non-dim operation. The information, once set, is
stored in the pack memory and is retained permanently.