Tag Archives: relays

PLC Logic – The Better Smart Relay

From |

There are numerous smart relays in the market but PLC Logic is perhaps the only one that can have both control and monitoring capabilities while linked to an Apple iPad. This is done by using Bluetooth dongle, which turns the PLC Logic into a modern wireless control system.  The range of Bluetooth devices is 100 meters with unobstructed line of sight and this translates to a lot of cost savings for applications that require control and monitoring remotely without the need to spend money for installation of communication devices and cable installation. The best thing is that the app is free from the Appstore. An additional plus point is that the interface looks really cool and clean, similar to what you can expect from an Apple Interface.

The PLC Logic also has versatile communication options to any higher level control system. It can support protocols such as PROFIBUS RS-232 RS-485 Modbus/TCP DeviceNet™ CANopen® PROFINET EtherNet/IP™ with just a change of gateway. With so many protocol options, there is no need to worry if the PLC Logic can support any higher level controller in the market.

One of the advantages PLC Logic has over the many smart relays in the market is that the relays are pluggable and replaceable. This solves the problem of the need to change the whole smart relay module in the event of a faulty relay. This translates to lower replacement cost. More importantly, downtime is greatly reduced and one just needs to change a relay instead of reprogramming the smart relay if the unfortunate relay gets faulty.

Another game changer in the smart relay market is that the analogue cards, both input and output, can be inserted as part of the main PLC Logic module without the need to attach a separate analogue module. This translates into cost savings as well as space savings. The analogue card supports both mA and V in full ranges. Besides that, there is also an analogue input card that supports PT100 or PT1000 sensor.

Last but not least, the PLC Logic comes with an option of full Push In connection technology. This can be found on the PLC Logic controller itself as well as all the corresponding relays that can be supported. The advantage of Push In is evident in applications that are prone to vibrations – you are well assured that none of the wires from the PLC Logic will be loosened.

Eliminate Extra Terminal Blocks Using Phoenix Contact’s PLC Relay

From |
Pluggable Compact (PLC) Relay

Pluggable Compact PLC Relay

Is space and cost a concern for you when designing-in relays for automation?

Phoenix Contact’s PLC Relay eliminates the need for extra terminal blocks, helping you reduce both space and cost. Let us see how.

PLC Relay Actuator Series

PLC Relay-Actuator Setup

Relay-Actuator Setup

In applications where only one normally-open(N/O) contact function is required, you can use Phoenix Contact’s PLC to Actuator output relays to interface with actuators, such as motors, contactors or solenoid valves.

You can connect all actuator connections, including the load return line, directly to the relay. Hence, eliminating the need for additional output terminal blocks to transfer power.

The benefit is daisy-chaining or looping the wiring for the power will not be necessary. This is illustrated in the wiring layout below.

PLC Relay-Actuator Interface

Relay-Actuator Interface

PLC Relay-Actuator Schematic

Relay-Actuator Schematic

 

PLC Relay Sensor Series

PLC Relay-Sensor Setup

Relay-Sensor Setup

Likewise, Phoenix Contact’s PLC to Sensor input relays can be used to interface with sensors, such as proximity switches, limit switches or auxiliary contacts, where only one normally-open(N/O) contact function is required.

PLC Relay-Sensor Interface

Relay-Sensor Interface

PLC Relay-Sensor Schematic

Relay-Sensor Schematic

Similar to the Actuator Series, you can also connect all sensor connections, including the supply voltage for the sensors/switches.

As you can see, available with screw, spring or push-in field terminals, Phoenix Contact’s relays will:

  • Open up Space on the DIN rail
  • Reduce Labor and components costs
  • Eliminate an extra point of failure

Ultimately, you can save approximately 80 Pecent on your DIN rail and approximately 60 percent less time on installation.
To find out more, click here