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In general, a DCS or PLC, handles numerous discrete I/Os. One common I/O module (board) is used to supply 8, 16 or more points. Discrete output circuits from a DCS typically use low power level signals (transistors, micro relays) which cannot be sent directly to the field devices such as electromagnetic valves or motor control circuits. That is why interposing relays are often necessary.
These relays play an important role by amplifying the current capacity of the contact signal of the I/O module allowing larger current flow. In addition, discrete input circuits normally can handle only dry contacts or wet contacts of low voltage, which also require interposing relays.
For example, let's say the relay of a PLC can only accommodate 0.5A at 220 VAC, but the solenoid which is to be connected to the relay requires 1.2A at 220 VAC. In this case, an interposing relay with contacts rated for operation at 1.2A at 220 VAC would be used as an interposing relay "between" the PLC relay and the solenoid. The coil of the interposing relay should require less voltage and current than the driving relay is rated for, and the contacts of the interposing relay must be rated to handle the requirements of the load (solenoid, light, contactor, motor, etc.).
What else can I help you with?
Where is the blinker relay on a 94 Saturn?
under the radio, in the relay and and fuse box, gray relay
How many people in a relay running race?
There are multiple relay races: 4x100, 4x100, distance medley, and other less used relays. Every relay has 4 members.
Why does radiator fan relay fail?
When the radiator fan relay fails on a vehicle, it can quickly overheat due to the lack of cooling. The fan is designed to kick on at specific temperatures controlled by the relay.
What is the antonym of relay?
keep, hold on, and words like this are all considered antonyms for the English word relay.
What is relay feedback?
they do a krakeour
What is the purpose of interposing relay panel?
Interposing relay panel is an Instrument / Electrical cabinet used for hardwired signal (digital inputs and outputs) interfaces between Instrumentation and Control Equipments system and associated circuit breakers,or other electrical devices for monitoring, controlling
How does interposing relay work?
An interposing relay is a type of relay used to isolate and control high-voltage or high-current circuits with low-voltage control signals. It operates by using an electromagnet to close or open a set of contacts, allowing the relay to control the power circuit without directly connecting the control circuit to the load. This provides protection, enhances safety, and allows for easier integration of control systems. Interposing relays are commonly used in industrial applications where electrical separation is needed.
Schematic diagram of an Interposing relay?
An interposing relay is an electromechanical device used to interface between two circuits, typically for the purpose of signal amplification or isolation. In a schematic diagram, it typically shows a coil connected to a control circuit and one or more sets of contacts connected to the load circuit. When the coil is energized, it creates a magnetic field that closes the contacts, allowing current to flow in the load circuit. This setup helps protect sensitive components from high voltages or currents present in the control circuit.
What is interposing relay?
It is a relay that has two states. in one state a set of contacts will make or break. In the other state the other set of contacts will make or break. One coil operating two sets of common, normally open, normally closed. each set of contacts will change states when the coil is momentarily energized.
What is the science definition for insulate?
Protect (from heat) by interposing material. Example: this tire is insulated!
How can a Discrete 120 V ac output module is to be used to control a 230 V DC solenoid show how this could be accomplished using a interposing relay?
Do your own homework. ^^^^^^^^^^ I'm pretty sure that if this user wanted a smart remark like yours he wouldn't have posted the question, this website's name is "answers.com" not "smart remarks made by people who have no lives and suck at life.com" thank you. I wish you luck getting the correct answer. Ditto....this person has nothing else better to do
What does the word interposition mean?
Interposition constitutes the act of interposing that actions that take into account central interests of two sides.
What is difference between interposing voltage transformer and potential transformer?
potential transformer is to maser and protection purpose the ivt is used for synchronicing purpose
What is pick up of a relay?
The "pick up" of a relay is a setting at which the relay will begin to operate. Such as an overcurrent relay - if the pickup is set to 5A, when 5A is flowing through the relay, the relay will operate.
How many swim in a relay team?
It depends what relay you mean - a normal relay has four swimmers (e.g. an IM relay or a freestyle relay) bu relays such as a cannon relay can have more
Which relay is the starter relay on a 1994 Buick lesabre?
Which relay is the starter relay on a 1994 buick lesabre
How to find out if a relay is bad?
Swap relay with another like relay.
