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. 147-893
Mfr. Part No.BMXCPS3020
€362.39
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
€175.74
Each
units
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
RS Stock No. 746-6117
Mfr. Part No.3RX9502-0BA00
BrandSiemens
€366.89
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. 698-7322
Mfr. Part No.1746-P1
€859.93
Each
units
SLC 500 - 170 → 265 V ac, 85 to132 V ac 24 V dc, 5 V dc 2 A - 58mm 140mm 145mm 0°C +60°C 58 x 140 x 145 mm
RS Stock No. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
€538.10
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. 703-7078
Mfr. Part No.MPA5500/RS
BrandMTL
€142.95
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. 510-1704
Mfr. Part No.CJ1W-PD022
BrandOmron
€138.64
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. 148-026
Mfr. Part No.BMXCPS2000
€187.86
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 2.5 A 20W - - - 0°C +60°C -
RS Stock No. 888-8460
Mfr. Part No.PBSB
BrandOpto 22
€119.00
Each
units
mistic Series Optomux 220 V ac 5V dc 500 mA - 114.3mm 99.1mm - -25°C +65°C -
RS Stock No. 488-9560
Mfr. Part No.274095 & MFD-CP4-800
BrandEaton
€112.33
Each
units
Easy 800 Easy 800 Series 24 V dc - - 1.5W 107.5mm 29.5mm 90mm -25°C +55°C 107.5 x 29.5 x 90 mm
RS Stock No. 135-5213
Mfr. Part No.140CPS11420
€868.40
Each
units
- Modicon PLC - - - - - - - - - -
RS Stock No. 147-900
Mfr. Part No.BMXXTSCPS20
€9.70
Each
units
BMX XTS CPS - - - - - - - - - - -
RS Stock No. 868-7365
Mfr. Part No.750-612
BrandWago
€19.32
Each
units
750 I/O Module 24 V dc - - - 64mm 12mm 100mm -20°C +60°C 64 x 12 x 100 mm
New
RS Stock No. 201-5570
Mfr. Part No.2688297
€128.15
Each
units
AXL Axioline F Station 19.2 → 30 V - 1.2 A 22W - - - - - 126.1 x 35 x 54 mm
RS Stock No. 470-9470
Mfr. Part No.AC1254
€243.23
Each
units
AC1254 Series AS-i - 29.5 → 31.6V dc - - - - - -10°C +70°C -
RS Stock No. 512-5924
Mfr. Part No.CJ1W-PD025
BrandOmron
€299.88
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. 197-4294
Mfr. Part No.89451001
BrandCrouzet
€26.70
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
€1,161.48
Each
units
Modicon Quantum Modicon Quantum 170 → 264 V ac, 93 → 132 V ac - 11 A - - - - -25°C +70°C -
RS Stock No. 623-7652
Mfr. Part No.VAN-115/230AC-K16
€387.66
Each
units
VAN AS-I - 30.55V dc 8 A - 91mm 124mm 102mm -10°C +70°C 91 x 124 x 102 mm
RS Stock No. 196-1249
Mfr. Part No.2316393
€128.12
Each
units
- - - - - - 35mm 125mm 130mm -40°C +65°C 35 x 125 x 130 mm
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