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. 148-010
Mfr. Part No.BMXCPS3500
$1,539.45
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
RS Stock No. 147-893
Mfr. Part No.BMXCPS3020
$1,539.45
Each
units
Modicon M340 Modicon M340 24 → 48 V dc 24V dc 4.5 A 31.2W - - - 0°C +60°C -
RS Stock No. 742-8828
Mfr. Part No.ABL2REM24020
$24.26
Each
units
ABL Series - - 24V - 50W - - - - - -
RS Stock No. 488-9560
Mfr. Part No.274095 | MFD-CP4-800
BrandEaton
$238.40
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. 512-5924
Mfr. Part No.CJ1W-PD025
BrandOmron
$626.78
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. 148-026
Mfr. Part No.BMXCPS2000
$649.08
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 2.5 A 20W - - - 0°C +60°C -
RS Stock No. 647-2502
Mfr. Part No.Q61P
$380.41
Each
units
Q61 PSU Series, Q Series 100 → 240 V ac 5V dc 6 A - - - - 0°C +55°C -
New
RS Stock No. 203-2783
Mfr. Part No.6ES7505-0KA00-0AB0
BrandSiemens
$360.70
Each
units
System power supply SIMATIC S7-1500 24 V - - 25W - - - - - 147 x 35 x 129 mm
RS Stock No. 510-1502
Mfr. Part No.CJ1W-PA205R
BrandOmron
$678.72
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. 746-2745
Mfr. Part No.C200HWPA204C
BrandOmron
$1,091.20
Each
units
C200HW SYSMAC CS1G Series, SYSMAC CS1H Series 100 → 240 V ac 5 V, 26 V 4.6 A 30W - - - - - -
RS Stock No. 197-4295
Mfr. Part No.89451003
BrandCrouzet
$97.64
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. 512-5918
Mfr. Part No.CJ1W-PA202
BrandOmron
$566.64
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
New
RS Stock No. 201-5570
Mfr. Part No.2688297
$269.59
Each
units
AXL Axioline F Station 19.2 → 30 V - 1.2 A 22W - - - - - 126.1 x 35 x 54 mm
RS Stock No. 197-4294
Mfr. Part No.89451001
BrandCrouzet
$66.06
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. 742-8824
Mfr. Part No.ABL2REM24015
$20.62
Each
units
ABL Series - - 24V - 35W - - - - - -
RS Stock No. 148-032
Mfr. Part No.BMXCPS2010
$740.37
Each
units
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
New
RS Stock No. 196-1248
Mfr. Part No.2316394
$1,083.43
Each
units
- - - - - - 17mm 97mm 92.2mm - - 17 x 97 x 92.2 mm
RS Stock No. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
$1,269.17
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
New
RS Stock No. 196-1260
Mfr. Part No.1114234
$1,464.46
Each
units
- - - - - - 45mm 75mm 126.93mm -25°C +60°C 45 x 75 x 126.93 mm
RS Stock No. 614-0643
Mfr. Part No.6GK5791-1PS00-0AA6
BrandSiemens
$1,257.65
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