Product Description:

The HP56A601 belongs to the Timers and Controllers series produced by Danaher. It is a panel-mount interval timer used to start or stop equipment after a preset delay, making it useful for conveyor indexing, heat-soak cycles, or lubrication scheduling in automated machinery. A synchronous motor drives the internal cam stack, helping the timer maintain stable operation across its full timing range.

This model operates from a 120 VAC source at 60 Hz, allowing direct connection to common North American control power rails. Timing can be adjusted from a 1-minute minimum to a 30-minute maximum in 0.5-minute dial divisions, allowing the cycle to be matched to process requirements. The motor has a burden of 2.45 VA, while the clutch has a burden of 10.5 VA, and both values should be considered when sizing the control supply. Electrical isolation is provided by a Form C relay rated for a 10 A resistive load at 120 VAC, allowing the unit to switch heaters, solenoids, or small motors without an interposing contactor. Mechanical reaction remains quick, with a pull-in time of 28 ms, a dropout time of 17 ms, and a nominal reset time of 0.5 seconds after the cams return to zero.

During energization, coil impedance limits the current surge to 10 A, reducing demand on upstream circuit protection. Repeat accuracy remains within ±9 seconds across the full scale, supporting consistent batch lengths despite line-voltage variations. A reset interval of 0.5 seconds minimizes the delay between operating cycles. A water-resistant seal and an ABS housing protect the internal mechanism from splashed coolant and airborne debris on factory floors. Fifteen screw terminals simplify the wiring of the control, motor, and clutch circuits while keeping the separate functions electrically organized.