PM4HF8-S-DC24V

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Time Delay Relays

Time delay relays are designed to be activated when a period of time has elapsed after being triggered by an input signal. They are used to control the timing of an operation such as a sequence of events, a specific amount of time between events, or to activate/deactivate a device. Time delay relays are based on the principle of delayed deactivation; once they are activated, they remain on until a preset amount of time has elapsed, after which they deactivate.

One example of a time delay relay is the PM4HF8-S-DC24V. It is designed for on-delay operations, with a selectable range from 0.001 seconds to 10 hours. The PM4HF8-S-DC24V requires a DC24V to activate, and has a maximum contact gap of 0.3mm and a maximum coil power of 6W.

The application fields of the PM4HF8-S-DC24V are vast; from automobile industry to the medical industry. In the automobile industry, the PM4HF8-S-DC24V is used to control the timing of an electronic ignition system. In the medical industry, it is used to control the timing of medical apparatus such as infusion pumps, X-Ray machines, etc. It is also used in industrial control and automated processes such as automated production lines and process control systems.

The working principle of the PM4HF8-S-DC24V is relatively simple. When triggered, either directly or by a manually operated switch, the PM4HF8-S-DC24V sends an electrical signal to an electromagnet causing it to be energized, therefore attracting the plunger and closing the reed. This allows current to flow through the electromagnet to the PM4HF8-S-DC24V, causing it to become activated. Once activated, the PM4HF8-S-DC24V begins counting down the predetermined amount of time before deactivating the electromagnet and opening the reed, thus cutting off the current and deactivating the PM4HF8-S-DC24V.

The PM4HF8-S-DC24V is programmed using the selection knob located on the front panel of the relay. The knob is turned to the desired time setting, which is indicated by a scale located on the side of the relay. Once the preset time has elapsed, the PM4HF8-S-DC24V will deactivate and open the reed, thus completing the cycle.

In summary, the PM4HF8-S-DC24V is a Time Delay Relay designed for on-delay operations, with a selectable range from 0.001 seconds to 10 hours. It is used in a wide variety of industries and applications, such as automotive, medical and industrial control and automated processes. Its working principle is relatively simple; when activated, the PM4HF8-S-DC24V will count down a preset amount of time before deactivating and opening the reed.

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