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PLC Logic Standalone Logic Modules

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Relay modules contain components that make switching and connecting easier, and act as indictors to show if the module is powered and if the relay is active. On the input side of a standard single-channel relay module, is the screw terminal block. This is the part of the module that comes in contact with the mains, and screw terminals make it easier to connect thick mains cables. The three connections on the terminal block are connected to the normally open, normally closed and common terminals of the relay. An input jumper is used to supply power to the relay coil and the ‘relay status LED.’ The output connectors are wires that are suitable for hardware connection.

Phoenix Contact PLC logic relays combine logic, interface and field connections. They have a modular design with a variety of relay modules enabling channel-specific configurations, and sensors and actuators that can be connected directly to the relay. In addition to the basic module, extension modules can be added for more complex tasks. Up to 48 IO signals can be acquired with a basic module and two extension modules. Parameter adjustments and monitoring can be accomplished using an app for IOS and Android.

Phoenix Contact PLC logic basic module is designed with 16 I/Os for plug-in connection to 8 digital or analog PLC-INTERFACE terminal blocks and can be extended to 48 I/Os. It features a real-time clock, a micro USB female connector and accommodates memory module and Bluetooth adapter.

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Phoenix Contact 2907446 PLC Logic Standalone Logic Modules Base unit
Phoenix Contact 2907446 PLC Logic Standalone Logic Modules Base unit
$169.73
PLC logic basic logic module, generation 2, with 16 I/Os, for plug-in connection to 8 digital or analog PLC-INTERFACE terminal blocks, can be extended to 48 I/Os, integrated realtime clock, micro USB socket, accommodates memory block and Bluetooth Adaptor, push-in connection
Phoenix Contact 2907445 PLC Logic Standalone Logic Modules Base unit
Phoenix Contact 2907445 PLC Logic Standalone Logic Modules Base unit
$146.11
PLC logic standalone logic module, generation 2, with 16 I/Os, for plug-in connection to 8 digital or analog PLC-INTERFACE terminal blocks, cannot be extended, integrated realtime clock, micro USB socket, accommodates memory block and Bluetooth Adaptor, screw connection
Phoenix Contact 2907443 PLC Logic Standalone Logic Modules Base unit
Phoenix Contact 2907443 PLC Logic Standalone Logic Modules Base unit
$146.11
PLC logic standalone logic module, generation 2, with 16 I/Os, for plug-in connection to 8 digital or analog PLC-INTERFACE terminal blocks, cannot be extended, integrated realtime clock, micro USB socket, accommodates memory block and Bluetooth Adaptor, push-in connection
Phoenix Contact 2907447 PLC Logic Standalone Logic Modules Base unit
Phoenix Contact 2907447 PLC Logic Standalone Logic Modules Base unit
$169.73
PLC logic basic logic module, generation 2, with 16 I/Os, for plug-in connection to 8 digital or analog PLC-INTERFACE terminal blocks, can be extended to 48 I/Os, integrated realtime clock, micro USB socket, accommodates memory block and Bluetooth Adaptor, screw connection

 

In most of today's modern electrical control scenarios, it is common to see some kind of controller or PLC that is monitoring the state of certain electrical components and providing control over several electrical circuits. This controller has the ability to process the information coming in and send output commands in response. This is all done using some kind of programming language, like ladder logic. However, before controllers were widely used, or in situations where the functions of the electrical circuits were quite simple, relay logic was used.  

So what is relay logic? Relay logic consists of relays wired up in a particular fashion to perform various switching operations to one or many different electrical circuits. The method in which the relays are wired will impact the overall function of the control that is provided. Relay logic circuits use a combination of relays and other components such as switches, motors, timers, actuators, contactors, lights and many other types of electrical hardware. Relay logic control uses basic ON/OFF functionality, which is quite simple, but can perform very complex control tasks depending on how many relays are used and the configuration of the wiring.  

This type of control uses different parts of the relays for different functions.  For example, the coil portion of the relay can be used as a discrete input point. When the coil receives voltage, it will perform a switching operation.  Depending on the relay, this might mean the relay switches just one circuit or it could switch many circuits. This switching can then control other relay coil inputs or it might turn on a light or motor. It all depends on the need of the control circuit. 

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