7012BC

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Time Delay Relays:

Time delay relays are an essential part of many industrial control systems. These devices can be used to control a variety of operations including motor speed, load shedding, pressure control, start-up/shutdown operations, and more. They are an ideal choice for controlling power to and from any type of machinery or equipment. This article will discuss the 7012BC time delay relay and its application field, as well as its working principle.

7012BC Application Field:

The 7012BC is a flexible time delay relay, and can be used in a variety of industries and applications. Some of the more common applications include:

• Motor speed control: the 7012BC can be used to precisely adjust motor speed, and reduce the risk of accidental overload.
• Automatic shut-off: the 7012BC can be used to shut down machinery and equipment when necessary, and can be calibrated to shutdown in as little as 5 minutes.
• Load shedding: the 7012BC can be used to reduce energy consumption, and minimize waste.
• Pressure control: the 7012BC is perfect for pressure control, and can be set to prevent ever reaching a dangerous or excessively high level of pressure.
• Start-up/shutdown operations: the 7012BC is ideal for start-up and shutdown operations, and can be used to delay the start-up or shut-down of a machine or system until the right conditions are met.

The 7012BC time delay relay is a versatile device with a wide range of applications. It is a robust and reliable device, and can provide precise control with minimal effort.

7012BC Working Principle:

The 7012BC time delay relay is based on a reed switch. A reed switch is a small device that uses a magnetically attracted armature to open or close contacts. The reed switch is actuated by a coil, which induces a magnetic field around the armature to move it into contact with an electro-magnet and close the contacts. On the 7012BC the coil is driven by an oscillator that is tuned to the desired delay time.

When the coil is energized, a magnetic field is induced in the current-carrying coil which then pulls the armature towards the magnet. This will cause the contacts to close, allowing a current to flow. As the current flows, it generates an electromagnetic field which opposes the magnetic field created by the coil. This causes the armature to reset and the contacts to open, which in turn stops the current.

The reed switch is also equipped with a damping device which is used to reduce the speed of the armature. This damping device is designed to allow the armature to reset at a slower rate than it was pulled in, which ensures that the contacts open at the same speed that they closed.

When the 7012BC time delay relay operates, the oscillator creates an alternating current in the coil. This alternating current creates different magnetic fields in the coil that cause the armature to oscillate back and forth, opening and closing the contacts according to the predetermined delay time. During this process, the armature is completely reset before it is energized again, ensuring that the contacts remain reliable and accurate.

Conclusion:

The 7012BC time delay relay is a versatile device with a wide range of applications. Its accurate timing control makes it ideal for use in industrial control systems, and it is robust and reliable. It is based on a reed switch, which utilizes a current-carrying coil to induce a magnetic flux around an armature. This causes the armature to open and close the contacts according to the desired delay time. The 7012BC is an ideal choice for controlling power to and from any type of machinery or equipment.

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