HG107A6 Danaher
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The Danaher HG107A6 is part of the Timers and Controllers series and features concentric front knobs for adjustment with a plug-in case housing style. It operates at 120 V, 60 Hz and uses a synchronous, unidirectional drive motor. The unit has a single pole double throw (SPDT) contact form, supports two output circuits rated at 10 A each at 120 VAC, and boasts a mechanical life of 10,000,000 operations.
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Product Description:
Danaher produces the HG107A6 electromechanical timer for the Timers and Controllers series. The unit provides cyclic switching for industrial machines, allowing conveyor indexing, dwell cycles, or batch stages to occur in a fixed pattern. By converting the rotation of a synchronous motor into cam-driven contact action, it integrates with relay logic or PLC interlocks and provides isolated outputs without requiring additional programming.
Electrical operation centers on a nominal supply of 120 V, 60 Hz, which feeds a synchronous, unidirectional drive motor that establishes the cycle timing according to the line frequency. The timer draws only 2.5 VA, allowing several units to share a small control transformer when the transformer has sufficient capacity. Concentric front knobs allow the run and dwell portions to be adjusted, while an internal mechanism limits overlap to 1.5% of the total cycle. Output switching is provided by a single-pole, double-throw SPDT contact arrangement connected to two isolated output circuits. The contacts can carry a resistive current of 10 A at 120 VAC, making them suitable for common heater, lamp, or solenoid loads. Sequential processes remain consistent because the timer provides a repeat accuracy of 0.5% of the dial setting. The plug-in housing slides into a matching socket for connection to the control circuit. Once installed, 8-32 screws secure the case against vibration during machine operation.
Mechanical wear is limited by gearing rated for 10,000,000 operations. The contact assembly is rated for 250,000 operations at full load, providing a separate endurance value for the switching components. A round panel cutout measuring 3.187 inches accommodates the molded case and allows the timer body to sit securely in the mounting surface. After the body is seated, the keyed base exposes 12 terminals for the line supply, drive motor, and dual output wiring. The keyed design helps maintain the correct timer orientation when the unit is inserted into its socket. Separate terminal positions also keep the supply and switched circuit connections organized within the panel wiring layout.
