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 Stock No. 192-4565
BrandRS PRO
SGD113.34
Each
units
- - - - - - - - - - - -
RS Stock No. 192-4564
BrandRS PRO
SGD316.24
Each
units
- - - - - - - - - - - -
RS Stock No. 512-5918
Mfr. Part No.CJ1W-PA202
BrandOmron
SGD357.70
Each
units
CJ1W CJ1M Series 85 → 264 V ac 5 V dc, 24 V dc 400 mA 14W 81.6mm 90mm 45mm 0°C +55°C 81.6 x 90 x 45 mm
RS Stock No. 148-010
Mfr. Part No.BMXCPS3500
SGD745.45
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
RS Stock No. 647-2502
Mfr. Part No.Q61P
SGD315.95
Each
units
Q61 PSU Series, Q Series 100 → 240 V ac 5V dc 6 A - - - - 0°C +55°C -
RS Stock No. 512-5924
Mfr. Part No.CJ1W-PD025
BrandOmron
SGD564.44
Each
units
CJ1W CJ1M Series 19.2 → 28.8 V dc 5 V dc, 24 V dc 5 A 25W 81.6mm 90mm 60mm 0°C +55°C 81.6 x 90 x 60 mm
RS Stock No. 455-6664
Mfr. Part No.Q63P
BrandMitsubishi
SGD483.94
Each
units
Q63 MELSEC Q Series 24 V dc 5V dc 6 A - 55.2mm 98mm 90mm - - 55.2 x 98 x 90 mm
RS Stock No. 148-026
Mfr. Part No.BMXCPS2000
SGD424.78
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 2.5 A 20W - - - 0°C +60°C -
RS Stock No. 147-893
Mfr. Part No.BMXCPS3020
SGD745.45
Each
units
Modicon M340 Modicon M340 24 → 48 V dc 24V dc 4.5 A 31.2W - - - 0°C +60°C -
RS Stock No. 148-032
Mfr. Part No.BMXCPS2010
SGD368.72
Each
units
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
RS Stock No. 510-1704
Mfr. Part No.CJ1W-PD022
BrandOmron
SGD233.45
Each
units
CJ1W CJ1M Series 21.6 → 26.4 V dc 5 V dc, 24 V dc 2 A 19.6W 81.6mm 90mm 27mm 0°C +55°C 81.6 x 90 x 27 mm
RS Stock No. 703-7078
Mfr. Part No.MPA5500/RS
BrandMTL
SGD253.49
Each
units
MTL5500 MPA550 85 → 265 V ac 24V dc 120 mA 1.2W 15.8mm 118.8mm 133mm -20°C +60°C 15.8 x 118.8 x 133 mm
RS Stock No. 614-0643
Mfr. Part No.6GK5791-1PS00-0AA6
BrandSiemens
SGD783.76
Each
units
PS791 SCALANCE 90 → 265 V ac 24V dc 420 mA 10W 125mm 60mm 130mm -20°C +60°C 125 x 60 x 130 mm
RS Stock No. 470-9470
Mfr. Part No.AC1254
SGD381.80
Each
units
AC1254 Series AS-i - 29.5 → 31.6V dc - - - - - -10°C +70°C -
RS Stock No. 868-7365
Mfr. Part No.750-612
BrandWago
SGD29.78
Each
units
750 I/O Module 24 V dc - - - 64mm 12mm 100mm -20°C +60°C 64 x 12 x 100 mm
RS Stock No. 868-7377
Mfr. Part No.750-610
BrandWago
SGD56.37
Each
units
750 I/O Module 24 V dc - - - 64mm 12mm 100mm 0°C +60°C 64 x 12 x 100 mm
RS Stock No. 510-1502
Mfr. Part No.CJ1W-PA205R
BrandOmron
SGD504.98
Each
units
CJ1W CJ1M Series 85 → 264 V ac 5 V dc, 24 V dc 5 A 25W 81.6mm 90mm 80mm 0°C +55°C 81.6 x 90 x 80 mm
RS Stock No. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
SGD826.46
Each
units
3RX950 AS-I Power Supply Unit 120 V ac, 230 → 500 V ac 30V dc 8 A - 125mm 120mm 125mm - - 125 x 120 x 125 mm
RS Stock No. 197-4295
Mfr. Part No.89451003
BrandCrouzet
SGD83.19
Each
units
MPS24 Designed for a wide range of industrial and building applications 100 → 240 V - 1.25 A 30W - - - - - 36 x 91 x 55.6 mm
RS Stock No. 135-5213
Mfr. Part No.140CPS11420
SGD1,921.74
Each
units
- Modicon PLC - - - - - - - - - -
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