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. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
TWD18,613.00
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. 148-032
Mfr. Part No.BMXCPS2010
TWD8,139.00
Each
units
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
RS Stock No. 746-6104
Mfr. Part No.3RX9501-0BA00
BrandSiemens
TWD9,806.00
Each
units
3RX950 AS-I Power Supply Unit 120 V ac, 230 V ac 30V dc 3 A - 125mm 50mm 125mm - - 125 x 50 x 125 mm
RS Stock No. 455-6664
Mfr. Part No.Q63P
BrandMitsubishi
TWD10,860.00
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. 614-0643
Mfr. Part No.6GK5791-1PS00-0AA6
BrandSiemens
TWD18,167.00
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
New
RS Stock No. 197-4294
Mfr. Part No.89451001
BrandCrouzet
TWD924.00
Each
units
MPS24 Designed for a wide range of industrial and building applications 100 → 240 V - 420 mA 10W - - - - - 18 x 91 x 55.6 mm
RS Stock No. 827-3786
Mfr. Part No.140CPS11420C
TWD50,723.00
Each
units
Modicon Quantum Modicon Quantum 93 → 132 V ac, 170 → 264 V ac - 11 A - - - - -25°C +70°C -
New
RS Stock No. 197-4295
Mfr. Part No.89451003
BrandCrouzet
TWD1,365.00
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
New
RS Stock No. 196-1260
Mfr. Part No.1114234
TWD20,131.00
Each
units
- - - - - - 45mm 75mm 126.93mm -25°C +60°C 45 x 75 x 126.93 mm
RS Stock No. 510-1502
Mfr. Part No.CJ1W-PA205R
BrandOmron
TWD11,332.00
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
New
RS Stock No. 197-4296
Mfr. Part No.89451006
BrandCrouzet
TWD1,767.00
Each
units
MPS24 Designed for a wide range of industrial and building applications 100 → 240 V - 2.5 A 60W - - - - - 54 x 91 x 55.6 mm
RS Stock No. 147-900
Mfr. Part No.BMXXTSCPS20
TWD487.00
Each
units
BMX XTS CPS - - - - - - - - - - -
RS Stock No. 510-1704
Mfr. Part No.CJ1W-PD022
BrandOmron
TWD5,239.00
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. 888-8460
Mfr. Part No.PBSB
BrandOpto 22
TWD5,111.00
Each
units
Mistic Series Optomux 220 V ac 5V dc 500 mA - 114.3mm 99.1mm - -25°C +65°C -
RS Stock No. 875-5742
Mfr. Part No.FX5-1PSU-5V
BrandMitsubishi
TWD5,733.00
Each
units
FX5 FX5U CPU Module, FX5UC CPU Module 100 → 240 V ac 5 V dc, 24 V dc 1.2 A @ 5 V dc, 300 mA @ 24 V dc 20W 50mm 90mm 83mm - - 50 x 90 x 83 mm
RS Stock No. 148-010
Mfr. Part No.BMXCPS3500
TWD16,728.00
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
New
RS Stock No. 201-5570
Mfr. Part No.2688297
TWD3,723.00
Each
units
AXL Axioline F Station 19.2 → 30 V - 1.2 A 22W - - - - - 126.1 x 35 x 54 mm
New
RS Stock No. 197-4297
Mfr. Part No.89451010
BrandCrouzet
TWD2,599.00
Each
units
MPS24 Designed for a wide range of industrial and building applications 100 → 240 V - 4.2 A 100W - - - - - 72 x 91 x 55.6 mm
RS Stock No. 746-6117
Mfr. Part No.3RX9502-0BA00
BrandSiemens
TWD12,690.00
Each
units
3RX950 AS-I Power Supply Unit 120 V ac, 230 V ac 30V dc 5 A - 125mm 70mm 125mm - - 125 x 70 x 125 mm
RS Stock No. 135-5213
Mfr. Part No.140CPS11420
TWD43,123.00
Each
units
- Modicon PLC - - - - - - - - - -