Creative Conners Stagehand Pro 3, Справочное руководство

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Stagehand Pro 3 Reference Manual, 11-20
Page 14 of 56
Encoder signal is missing or faulty, the VFD will enter a fault condition and the Stagehand won’t allow
motion until the encoder is repaired. This feature is vitally important in lifting applications so that the
Stagehand can detect a free-falling load and engage the mechanical safety brakes.
Position Encoder
A set of quadrature signals used by the motion controller to drive the motor to correct positions on
cue. This encoder may be the same as the Speed Encoder or it may be a separate encoder. For
instance, a scissor lift needs a speed encoder on the pump motor, but the positioning encoder
should be placed directly on the lift platform since the relationship between the motor rotation and
platform position changes depending on the extension height of the lift as it raises and lowers. A
deck winch however, can use a single encoder mounted on the motor for both speed and
positioning.
Encoder Wiring Strategies
As mentioned above, you can use either a single encoder mounted to the motor for both Speed and
Position Encoder signals, or separate encoders mounted in different locations on the machine.
Below are two drawings that show how to wire your encoder signals in both scenarios.