VARILITE VL4 - Principles of Operation; Operation Overview; Operation Description; Electronics Components

C
HAPTER
1. I
NTRODUCTION
1-17
02.9628.0010 CONFIDENTIAL
7-Oct-97
1.5 Principles of Operation
1.5.1 Operation Overview
Operation of the luminaire is provided by software within the luminaire.
The processing functions are carried out on the universal control board
(composed of the lamp control board and the interface board).
The voltage selector board senses the incoming voltage and automatically
configures the power supplies for either 110 or 220 VAC. Lamp power is
provided by the arc power supply plus. From the low voltage supply
board, the voltage is channeled to the following main mechanical
subassemblies:
•
Blue/amber bulkhead assembly
•
Diffuser assembly
•
Dimmer/filter/douser assembly
•
Rear bulkhead and bulb mounting assembly
•
Pan mechanism and tilt mechanism.
1.5.2 Operation Description
1.5.2.1 Electronics Components
Voltage Selector Board (VSB)
The voltage selector board senses the amplitude of the AC input power and
switches the transformer primaries in series (for 220 mode) or parallel (for
110 mode). When in 110 mode, the voltage selector board accepts an
incoming voltage of between 85 and 130 volts. When in 220 mode, the
voltage selector board accepts an incoming voltage of between 170 and
260 volts.
Transformer/Capacitor Assembly (XFMR)
This assembly provides unregulated DC power for use by the lamp power
supply assembly and low voltage supply board.
Low Voltage Supply (LVS 4)
The low voltage supply PCB provides DC voltage regulation for the
luminaire.
Motherboard PCB Assembly (MBD 4)
The motherboard routes power to the luminaire electrical components.