Vari Lite VL3500 Spot Luminaire, Service Manual

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VARI
❋
LITE
®
- VL3500™ S
POT
L
UMINAIRE
S
ERVICE
M
ANUAL
1 2 0 2 . 9 6 7 8 . 0 0 1 8 A
• Low value - 0 volts, or up to approximately 0.2 volts.
Notes regarding specific mechanisms:
• The four color mixers will read high when the tab is in the optical sensor.
• The fixed color wheel will read low when the magnet is at the sensor and high at other times.
• The zoom and edge will read high when the sensor is closed, or the tab is in the sensor.
• The gobo wheel reads low when the magnet is at the sensor.
• The gobo index/rotation reads low when the slot is in the sensor.
• Pan and tilt sensors read high when the tab is in the sensor. The mechanism calibrates to the edge
and its tab covers 50% of travel. Pan and tilt encoders are best read with a scope to read the
encoder ticks.
Notes regarding lamp control:
• The douse command applies 5v to the out line. When the start command is given, this drops to 0v.
This can be measured at the MCB at the ballast connection. The Out pin of the 5-pin connector
should read 0v when the lamp is striking or On (Config>Lamp>Power>On). When the douse
command is given (Config>Lamp>Power>Off), the reading should changed to 5v. Likewise, the
standby circuit goes to standby when 5v is received on the standby line. Equally, if 5v is applied to
the standby line, the lamp will go into standby mode, and if 5v is applied to the Out line, the lamp
will douse.