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Rotary Drive Synchronous

The industry’s most advanced analog clock. The RDS incorporates state-of-the-art microprocessing with infrared positioning sensing creating the most accurate timekeeping system. A powerful rotary stepper motor and indexing technology not only makes this the most durable mechanism, but it also has the lowest power consumption. Less than 10 cents per year! On-demand instant reset capability gets your clocks on time when you need it… now! An industry exclusive.

The RDS clock line has been replaced by the Spectrum Wired Series clock. This page is being maintained for historical technical information only.

features

  • Revolutionary Rotary Drive Design
  • Microprocessor Controlled
  • On-Demand Instant Correction
  • Universal Reset Operation
  • Swift, Smooth, Ratchet-free Operation
  • Compatible with Existing 3-Wire Synchronous Clocks
  • Made in the U.S.A.

National Time is pleased to reintroduce the synchronous time system with today's high tech performance! Microprocessor technology has replaced the slow, troublesome spring/ratchet/solenoid engagement designs currently offered by other manufacturers. National Time's revolutionary Rotary Drive time system can instantly correct all of the building clocks to the exact hour and minute at any time of the day! With our on demand instant time correction, you no longer have to wait up to twelve hours or perform confusing, tedious sequences of manual stops, starts and resets. We give you the correct time when you need it --- NOW!
For systems not incorporating the National Time MC100, On-Demand correction may be achieved using the PS-3-OD Power supply or URTOD- HH module. Rotary Drive guarantees to outperform all existing clock technology without sacrificing the unsurpassed durability you have come to expect from National Time's synchronous motor drive systems. The 3WS series will emulate most existing synchronous clock operation without the frailties of solenoids, ratchets, switches or levers. See Compatibility List bulletin C-430. Each clock is equipped with an all metal case, convex glass crystal, and white polystyrene dial having black markings and hands. A sway-proof hanger plate is furnished that securely holds clock to wall. Cases are attractively finished in powder gray enamel. Other finishes and shatterproof lens are available upon request. Shatterproof lens now standard on 12” round.

Specifications & Related Literature

Cutsheet Name/Description
332 RDS & RDI Rotary Drive Clock Specifications
430 RDS & RDI Rotary Drive Clock Compatibility List
435 RDS & RDI Rotary Drive Analog Clock Wiring

Designed to last a lifetime

For more than 100 years, we’ve been a trusted provider of top-quality clocks. Whether it’s traditional wired master clocks or innovative Wi-Fi clock technology, we have the right system for you. Contact us today to find the option that’s best for you.

 

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