A system is required to plot the response of a sensitive detector that must receive equally from all directions. It is mounted on a rotary table that needs to be indexed in 3.6 degree increments, completing each index within one second. For set-up purposes, the table can be positioned manually at 5 rpm. The table incorporates a 90:1 worm drive.

Machine Objectives:

• Repeatable indexing
• Remote operation
• Table speed of 5 rpm

Motion Control Requirements:

• Jogging capability
• Sequence select functionality
• Capable of remote drive shutdown

Application Solution:

The maximum required shaft speed (450 rpm) is well within the capability of a stepper, which is an ideal choice in simple indexing applications. In this application, electrical noise has to be minimized to avoid interference with the detector. This can be done by using a low-EMI linear drive or by shutting down the drive after each index.

Application Solution:

The maximum required shaft speed (450 rpm) is well within the capability of a stepper, which is an ideal choice in simple indexing applications. Operating at a motor resolution of 400 steps/rev, the resolution at the table is a convenient 36,000 step/rev. In this application, it is important that electrical noise is minimized to avoid interference with the detector. Two possible solutions are to use a low-EMI linear drive or to shut down the drive after each index (with a stepper driving a 90:1 worm gear there is no risk of position loss during shutdown periods)

Product Solutions:

• Indexer/Drive - ZETA6104-240
• Motor - OS22B