What is the purpose of interlocks?
According to this definition, an “interlocking device” or “interlock” is a “mechanical, electrical or other type of device, the purpose of which is to prevent the operation of hazardous machine functions under specified conditions” (generally as long as the guard has not closed).
What is interlock mechanism?
An interlock is a type of device that is used to prevent undesirable conditions in machines, which may include mechanical or electronic systems or devices. In almost all applications, it is utilized to aid in preventing machines from causing harm to the machine itself or to the operators.
What is contactor interlock?
What is Contactor Interlocking? When an electrical circuit has two contactors and only one of them needs to be turned on at a time then the interlocking system is used. The interlocking system ensures that only one contactor can be on while another one will be in off condition even if we try to manually on it.
Why interlocking is used for the contactors?
What is interlock instrumentation?
Interlocking is a method used to maintain safe operating state of machinery. Interlocks (except process) put the ‘target device’ (the equipment which the interlock acts on e.g Valve or Pump) into a “default” position to help ensure process is in a safe state. All interlocks report to the control system.
What is an electrical interlock switch?
What’s an Interlock? An interlock is a device that manages the power source to the electrical panel. The interlock ensures that the generator circuit breaker and the main circuit breaker cannot be turned on at the same time.
What is interlock in P&ID?
Interlock: An Interlock is in essence a ‘self resetting’ Trip. Interlocks are not deemed safety related and can be used for on/off control.
What is interlocking in fuse?
To interconnect the motor circuit in such a way, in which the second motor will not start until the first one run likewise the third one motor will not run unless the second one run and so on. This kind of motor circuit connection is called interlocking.
What is interlock in HVAC?
interlock. A connection between HVAC device components to prevent. damage to a component or the system or coordinate the. support one device must give another in order to perform. its function.
What is interlock switch?
Safety interlock switches are used as interlock devices that can prevent machine operation or startup in an unsafe situation, such as when a door or guard is open. Interlock devices with a locking function can also prevent doors or guards from being opened while the machine is in operation.
What is interlocking switch?
Our Safety Interlock Switches are a means of safeguarding that monitors the position of a guard or gate. You can use them to shut off power, control personnel access and prevent a machine from starting when the guard is open.
What is the purpose of an interlock circuit on an electric forced air furnace?
An electrical interlock ties a heat recover ventilator to circulation air blower operation of an associated forced-air furnace or air conditioning system. This ensure that the blower circulates supply and return air within the building or dwelling.
What is a safety interlock circuit?
Trapped-key interlocks are often used to ensure that all guards are locked shut before operating a machine. In these systems, locks on each safety guard have keys which can only be removed when the guard is barred shut. The keys can then be taken to the control or power unit and used to activate the machinery.