Omron safety relays can be described as devices that applied safety measures and are usually used in a safety circuit. In an hazardous event, safety relays will be used to minimise the risk to a lower level. Safety relay is used to monitor all the other machines in the circuit, in order to detect any risk or hazard level malfunction. Listed are five examples of common uses of safety relay in a control device.
Common Uses of Safety Relay
1. Light Curtains
Light curtains are used to defend staff in the proximity of machinery that moves and has the ability to harm others. In this situation, a stop signal is transmitted to the said equipment if any of the infrared rays generated by the device are faulty. A safety relay will then administer the actual process of eradicating the motive power from the hazard as it is linked with the light curtains. A muting functionality that allows the temporary disabling of the safety power might also exist in certain safety relays.
2. Safety Mats
Safety relays that are pressure-sensitive are able to work together with safety mats. The functions of safety mats are to ensure that all staff are safe and also reinforce other devices that are involved in the safety circuits. As an example, while the safety mask is on, one could build up a group of light curtains. By doing so, it will let objects walk through it, which gives the machines the ability to function as usual. Safety mats can also be used independently. They are the same as the light curtains because they can be designed to initiate the command for the machines to stop when triggered.
3. Three-position Devices
Three-position device is an example of safety devices that are useful when used for correcting an application. There are a lot of machines in this particular group. These devices usually have a joystick that is sensitive towards pressure. It is used in a specific condition to conduct. The device will also immediately return to its natural condition when the user releases the joystick.
4. Two-hand Control Devices
It is important to use a two-hand control device when you are handling services that need a high degree of safety precautions. Such devices are crucial if the operator is to be prevented from reaching the dangerous area. A one-handed control device will be enough when the-hand control device is finally inaccessible for the operator to handle it.
5. Magnetic Switches
For applications that involve actions like closing a door or hatch, intersecting or aligning two objects together, a magnetic switch will be helpful. When the sensors lose their contact with each other, an emergency signal will be transmitted to the responding relay to securely disable the machine from working. It’s very simple to position or hide magnetic switches when they are equipped in switches or doors, due to the fact that they are very packed and compacted. The operational lifetime for a magnetic switch is also long because it does not need any mechanical contact to operate.