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. 703-7078
Mfr. Part No.MPA5500/RS
BrandMTL
MYR852.65
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
New
RS Stock No. 197-4296
Mfr. Part No.89451006
BrandCrouzet
MYR330.17
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. 614-0643
Mfr. Part No.6GK5791-1PS00-0AA6
BrandSiemens
MYR2,723.10
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. 875-5742
Mfr. Part No.FX5-1PSU-5V
BrandMitsubishi
MYR859.39
Each
units
FX5 FX5U CPU Module, FX5UC CPU Module 100 → 240 V ac 24 V dc, 5 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. 488-9560
Mfr. Part No.MFD-CP4-800
BrandEaton
MYR646.60
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. 827-3786
Mfr. Part No.140CPS11420C
MYR7,542.66
Each
units
Modicon Quantum Modicon Quantum 170 → 264 V ac, 93 → 132 V ac - 11 A - - - - -25°C +70°C -
RS Stock No. 746-6117
Mfr. Part No.3RX9502-0BA00
BrandSiemens
MYR1,902.26
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. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
MYR2,789.96
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. 135-5202
Mfr. Part No.140CPS12420
MYR7,286.30
Each
units
- Modicon PLC - - - - - - - - - -
RS Stock No. 147-900
Mfr. Part No.BMXXTSCPS20
MYR73.00
Each
units
BMX XTS CPS - - - - - - - - - - -
New
RS Stock No. 196-1249
Mfr. Part No.2316393
MYR664.26
Each
units
- - - - - - 35mm 125mm 130mm -40°C +65°C 35 x 125 x 130 mm
New
RS Stock No. 197-4294
Mfr. Part No.89451001
BrandCrouzet
MYR172.61
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. 135-5213
Mfr. Part No.140CPS11420
MYR6,463.99
Each
units
- Modicon PLC - - - - - - - - - -
New
RS Stock No. 197-4295
Mfr. Part No.89451003
BrandCrouzet
MYR255.14
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
MYR4,190.33
Each
units
- - - - - - 45mm 75mm 126.93mm -25°C +60°C 45 x 75 x 126.93 mm
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