PLC Power Supplies

A programmable logic controller (PLC) is a specialised computer which has been adapted for the control of industrial processes such as robotic devices and assembly lines. PLC power supplies are components of PLCs that convert relatively high input source power into lower regulated voltages required for the internal circuitry in PLCs. 


How do PLC power supplies work?


The PLC power supply gets input power from an external line voltage, which is usually fed through a control relay and filter external to the PLC. The line voltage is stepped-down, filtered, rectified, regulated, status-monitored and voltage and current protected. Some PLC power supplies are embedded with switches for selecting a particular programming mode or protecting the memory.


The resulting low DC voltage output powers the PLC’s various modules as well as the PLC's integral battery (which is used for memory back up). Should the input line voltage drop or the PLC power supply fail, the memory contents will not change thanks to the memory backup.


What are PLC power supplies used for?


PLC power supplies are essential components required to run a PLC.


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Description Price Manufacturer Series For Use With Line Voltage User Power Output Voltage Output Current Output Power Length Width Depth Minimum Operating Temperature Maximum Operating Temperature Dimensions
RS庫存編號 148-032
製造零件編號BMXCPS2010
HK$1,537.84
單位
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
RS庫存編號 148-026
製造零件編號BMXCPS2000
HK$2,380.00
單位
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 2.5 A 20W - - - 0°C +60°C -
RS庫存編號 148-048
製造零件編號BMXXTSCPS10
HK$136.00
單位
BMX XTS CPS - - - - - - - - - - -
RS庫存編號 147-893
製造零件編號BMXCPS3020
HK$4,590.00
單位
Modicon M340 Modicon M340 24 → 48 V dc 24V dc 4.5 A 31.2W - - - 0°C +60°C -
RS庫存編號 135-5213
製造零件編號140CPS11420
HK$9,547.45
單位
- Modicon PLC - - - - - - - - - -
RS庫存編號 135-5202
製造零件編號140CPS12420
HK$10,760.47
單位
- Modicon PLC - - - - - - - - - -
RS庫存編號 147-900
製造零件編號BMXXTSCPS20
HK$106.00
單位
BMX XTS CPS - - - - - - - - - - -
RS庫存編號 148-010
製造零件編號BMXCPS3500
HK$4,210.00
單位
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
RS庫存編號 827-3786
製造零件編號140CPS11420C
HK$11,930.95
單位
Modicon Quantum Modicon Quantum 93 → 132 V ac, 170 → 264 V ac - 11 A - - - - -25°C +70°C -