Atmospheric Pre-aligner Manual
4000-0015 Rev 1
8
Safety Features
A pre-aligner is a low-inertia mechanism and turns off servo motors
quickly when an obstruction is encountered. Low mass and inertia allow
the following error to be set low, even when high speeds are required.
Mechanical stops are placed at the positive and negative limits of the r and
z axes to prevent the pre-aligner from over travel and possible damage.
The following conditions result in an internally generated signal that
disables the amplifiers:
• The controller bus power fails
• A servo amplifier fails
• Motor power fails inside the pre-aligner
• The signal cable connection is broken
• The servo motor control fails.
Cable Connectors
Cable connectors for the CCD data cable, motor signal cable, and power
cable are heavy-duty locking D-type connectors. If you disconnect the
signal cable, the amplifier is disabled.
WARNING:
Be sure the connector locking screws are locked down
during installation and operation!
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