PLCS & INDUSTRIAL PCS SUPPLEMENT PRODUCTS REDUCE SYSTEM COSTS
When using the SmartAxis combination PLC/HMI from IDEC Electronics users are capable of achieving significant savings. As the unit has the control I/O and display in the
panel mount HMI body, there is no need for space inside the control panel to mount the traditional PLC. Then, accepting that the four relay outputs on the controller are rated at 10A per point, this allows the direct connection of solenoids and small motors, removing the need for additional interposing relays. They are space saving and, without the need for these additional relays, it means further saving on wire and wiring time. So by taking this approach
manufacturing/assembly costs can be reduced. However, the story does not end there - the product offers many technical advantages due to the high specification and features. The screen size is 3.8" (100 x 300 pixels) and is a resistive touch format allowing freedom with your screen design and button locations. A choice of either colour or mono is available - the colour version has 65K colours and a super bright, high resolution LCD TFT screen, while the mono version provides a 740 cd/m2
LCD STN display
and is backlit by either a white, red or pick LED light to draw the attention of the operator when alarms are present or actions are needed.
If your application has the need for high speed
inputs from an encoder or similar pulse train apparatus or the need to ‘catch’ the input from a sensor detecting a fast moving target, then the built-in high speed inputs (single pulse 10kHz, four points or two-phase 5kHz, one point) can easily accommodate this need. While we look at the controller inputs it is important to point out the two built-in analogue inputs (0-10V) for the connection of flow meters, distance sensors or other analogue devices. The communication options featured on the
unit include built-in RS232, RS485 and Ethernet ports each working independently, which allows the easy connection of a barcode reader (RS232), a process instrument such as a temperature controller (RS485) and up-stream data or information devices (Ethernet). The Modbus protocol is used in either Modbus RTU or Modbus TCP/IP formats. The Ethernet port can also support ‘remote maintenance’ where the user can upload to/download from the SmartAxis from their remote location.
Functions such as datalogging and program transfer can be achieved through the integrated USB port while programming is done via a mini- USB maintenance port. The screen can be utilised to display the status of I/O, easily check/adjust
data variables and even view the ladder program – all of which can be password protected with the security function. Additionally there is a built-in real time clock with daylight saving function - ideal for many building and environmental control applications. The product is already being used in
applications from air drying and water purifying systems, pressing and stamping machines, pump and generator sets, greenhouse environmental control and theme park attractions.
IDEC Electronics
www.IDEC.com/uk T: 01256 321 000
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