Telecommunication Experts
Established in 1997, C-COM Satellite Systems Inc., Ottawa, Canada, is involved in the design, development and manufacture of commercial grade, fully motorized, auto-pointing mobile antennas for the delivery of broadband Internet to remote locations.
The company has been a pioneer in the one-button, auto-deploy VSAT market – with over 11,000 units in the field, in over 100 countries.
C-COM has developed Comms-on-the-Pause (COTP) antennas that operate in all major satellite bands (Ka, Ku, C, and X-band), in sizes (from 74cm to 2.4M) and in various formats (Drive-Away, Fly-Away, Manpack and Fixed Motorized).
Precise Positioning
For each system, C-COM required two gearmotors to position the antenna to connect to orbiting telecommunications satellites. The gearmotors deliver precise motion during the initial search of the satellite and then remain idle until the antenna is moved to a new location. These mobile antennas are often used in remote locations to broadcast news or sports events, or for emergency and military communications, therefore the gearmotors needed to be able to operate in harsh outdoors environments and run from a 24 VDC power source.
“Our design team recommended a 24A-60P planetary PMDC gearmotor with custom wiring, shaft, mounting and encoder. The gearmotors provide high torque and precise motion, are small enough to fit the portable application. This proved to be a more cost competitive solution,” Auchstetter said.
This design included:
A totally enclosed type 24A-60P, 24V planetary PMDC gearmotor with needle bearings for high peak torque and long life.
Sealed gearbox, high-performance lubricant for outdoor applications
Built-in encoder, 1,000 PPR, quadrature signal is fed into 2-axis motion controller for precise elevation, azimuth, and polarization angle adjustments
Watertight wiring harness
Modified mounting and shaft
The 24A4-60P gearmotor combines the high-performance 24A PMDC motor with the type-60P planetary (60 mm) gearhead. The gearmotor’s small diameter and predictable variable speed performance make it an ideal drive for industrial automation, pumps, packaging equipment and many other industrial applications. This gearmotor is suitable for applications that require higher torque than conventional helical/spur gearheads can provide, especially for intermittent duty.
Bodine DC speed controls are designed to deliver optimal performance from the company’s 12, 24, 90, or 130 Volt PMDC motors and gearmotors. Stock controls are available with either filtered or unfiltered DC output. Current limit, torque limit, maximum/minimum speed, and acceleration/deceleration time can all be adjusted to fit each application.
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