HG100A6 by Danaher

The HG100A6 timer module is manufactured by Danaher for integration into the Timers and Controllers series. Designed for panel installation, the unit provides repeat-cycle timing that starts and stops auxiliary loads at a selected cadence inside automated machines. Its dial-type front display lets operators set the required interval without external programming, and an internal unidirectional synchronous motor drives the cam assembly that actuates the output contacts. In conveyor indexing, batch mixing, or component curing systems, this component supplies a simple electromechanical way to regulate on-and-off sequences.

Powered by a nominal 120 VAC source at 60 Hz, the timer draws only 2.5 VA, so it can share control power with other low-load devices without overloading the supply transformer. The front dial provides graduated markings that correspond directly to elapsed time, and its unidirectional synchronous motor ensures that the cam advances at a constant rate. The built-in two SPDT switches control independent circuits, providing normally open and normally closed outputs for flexible interlocking. Under resistive loading, each pole can carry 10 A, allowing direct control of solenoids, contactor coils, or indicator lamps. Panel mounting keeps wiring runs short and provides clear access to the terminal connections.

The repeat-cycle function lets the contacts open and close continuously while power is applied, and the user can select any interval from 0.5 s to 30 s with the single-turn dial. Once set, cumulative variation remains within 0.5% of the dial setting, so successive cycles stay closely aligned. The mechanism also limits the dwell, or overlap between successive operations, to 0.5 seconds, preventing contact chatter at short settings. Rated operation continues at ambient temperatures up to 140 °F, which covers typical conditions in sealed control cabinets near production lines. The electromechanical timing mechanism operates without additional electronic supervision.