Vari Lite VL3000 Wash, Service Manual

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T
ESTING
: A
UTO
R
ECALIBRATION
02.9678.0010 D 13
2
Auto Recalibration
Most mechanisms with sensors will check their sensor when at a zero position, if the sensor is not
detected within 3 seconds, the mechanism will recalibrate. This applies to all except pan and tilt, pan
and tilt are corrected continuously if required by encoders fitted to the motor shaft.
It is possible to recalibrate sections of the luminaire from a console. This allows greater flexibility and
speed by only forcing a recalibration on specific mechanisms
Partial recalibration values:
•
Hold DMX value 102 for 3 seconds then 0 recalls color: Color wheel, CYM, CTO, Dimmer
• Hold DMX value 114 for 3 seconds then 0 recalls gobos: Gobo wheels and Index
• Hold DMX value 128 for 3 seconds then 0 recalls lenses: Edge, Zoom or beam spreader
• Hold DMX value 140 for 3 seconds then 0 recalls dimmer and strobe
Sensor Testing
Most mechanisms within the VL3000 luminaire are equipped with either optical or magnetic sensors.
The VL3000 master control board (MCB) has labeled test points for reading DC voltages at each
sensor. Testing is best performed with a digital voltmeter for sensor readings or an Oscilloscope for
pan/tilt encoder readings. The values can be used to determine whether a circuit is opening correctly or
for further troubleshooting.
Guidelines:
•
The values will change depending on whether the sensor reading is Open or Closed.
• The values will be different depending on the type of sensor: optical or magnetic.
• As a general rule, if a change occurs from 5v to 0 or visa versa, then it is working.
• An Open reading occurs when the sensor is not aligned -tab not at sensor (tipsily a non-zero DMX
value).
• A Closed reading occurs when the sensor is aligned -tab in or at sensor (typically a zero DMX
value).
• Optical sensors read high when the sensor is Closed.
• Magnetic sensors read Low when the sensor is Closed.
• High value - 5v (typically 4.9 volts).
• Low value - 0 volts, or up to approximately 0.2 volts.