HP56A616 Danaher
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Current response time:
3 Minutes
27 Seconds
The Danaher HP56A616 is part of the Timers and Controllers series and operates at a nominal voltage of 120 VAC with a frequency of 60 Hz. It features a maximum time setting of 60 minutes, an output rating of 10 amps at 120 VAC, and has an electrical life of 250,000 operations. The timer has a pull-in time of 28 milliseconds and weighs 2 pounds 14 ounces.
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Product Description:
The HP56A616 is an electromechanical interval timer manufactured by Danaher for the Timers and Controllers series. It mounts behind a control panel and provides repeatable time delays that can start, stop, or interlock machinery without PLC logic. This operating method makes the timer suitable for conveyors, ovens, and other fixed-cycle equipment. Its panel-mounted design also keeps the timing mechanism accessible from the front while the electrical connections remain protected behind the panel.
This timer operates from a nominal supply of 120 VAC at 60 Hz. Its synchronous motor imposes a 2.45 VA burden, while the magnetic clutch requires 10.5 VA only during actuation. The SPDT output can carry up to 10 A at 120 VAC, allowing direct switching of heaters, solenoids, or pilot relays within the contact rating. A front dial divided into one-minute increments accepts a minimum setting of two minutes and reaches a full scale of 60 minutes. Under steady ambient conditions, the mechanism maintains a repeat accuracy of ±18 seconds, minimizing timing variation between production cycles. Fifteen numbered terminals accommodate the supply, clutch, and contact wiring, providing organized field connections without unnecessary terminal positions.
Cycle recovery is rapid because the reset period is only 0.5 seconds. When power is applied, the armature pulls in after 28 ms, and removal of voltage releases it within 17 ms. These response times help prevent contact overlap when several timers share a common control bus. Contact wear is limited by an electrical life of 250,000 operations, supporting repeated switching in fixed-cycle machinery. The mechanism fits a 3.187-inch round cutout, allowing installation in compatible annunciator and control panels without reshaping the enclosure. Its overall weight is 2 lb 14 oz, which limits the load placed on panel doors while providing enough mass to resist vibration. The separate motor and clutch circuits permit the timing motion and output actuation to be controlled according to the required machine sequence.
