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. 698-7376
Mfr. Part No.1747-BA
£105.00
Each
Units
1747 RSLogix 500 - - - - - - - 0°C +60°C -
RS Stock No. 698-7708
Mfr. Part No.1769-PA4
£272.00
Each
Units
1769 Series Compact I/O Module 85 → 265 V ac 24 V dc, 5 V dc 4 A - 70mm 118mm 87mm 0°C +60°C 70 x 118 x 87 mm
RS Stock No. 624-1825
Mfr. Part No.F2-40BL
BrandMitsubishi
£52.00
Each
Units
F2-40BL FX2N Series - - - - - - - - - -
RS Stock No. 253-2278
Mfr. Part No.TSXPLP01
£29.00
Each
Units
TSX - - - - - - - - - - -
RS Stock No. 647-2502
Mfr. Part No.Q61P
£157.67
Each
Units
Q61 PSU Series, Q Series 100 → 240 V ac 5V dc 6 A - - - - 0°C +55°C -
RS Stock No. 698-7326
Mfr. Part No.1746-P2
£612.00
Each
Units
SLC 500 - 170 → 265 V ac, 85 to132 V ac 24 V dc, 5 V dc 5 A - 74mm 140mm 145mm 0°C +60°C 74 x 140 x 145 mm
RS Stock No. 624-1831
Mfr. Part No.Q6-BAT
BrandMitsubishi
£27.50
Each
Units
Q6-BAT Q Series - - - - - - - - - -
RS Stock No. 455-6664
Mfr. Part No.Q63P
BrandMitsubishi
£241.50
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. 539-0910
Mfr. Part No.FX3U-32BL
BrandMitsubishi
£50.00
Each
Units
FX3U MELSEC Series - - - - - - - - - -
RS Stock No. 147-893
Mfr. Part No.BMXCPS3020
£354.00
Each
Units
Modicon M340 Modicon M340 24 → 48 V dc 24V dc 4.5 A 31.2W - - - 0°C +60°C -
RS Stock No. 750-8630
Mfr. Part No.2080-PS120-240VAC
£47.60
Each
Units
Micro 800 Micro800 Series 120 → 240 V ac - - - - - - - - -
RS Stock No. 698-7335
Mfr. Part No.1746-P3
£498.00
Each
Units
SLC 500 - 19.2 → 28.8 V dc 24 V dc, 5 V dc 3.6 A - 74mm 140mm 145mm 0°C +60°C 74 x 140 x 145 mm
RS Stock No. 698-7717
Mfr. Part No.1769-PB4
£272.00
Each
Units
1769 Series Compact I/O Module 19.2 → 31.2 V dc 24 V dc, 5 V dc 4 A - 70mm 118mm 87mm 0°C +60°C 70 x 118 x 87 mm
RS Stock No. 148-032
Mfr. Part No.BMXCPS2010
£172.00
Each
Units
Modicon M340 Modicon M340 24 V dc 24V dc 2.5 A 16.8W - - - 0°C +60°C -
RS Stock No. 510-1502
Mfr. Part No.CJ1W-PA205R
BrandOmron
£242.20
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. 512-5918
Mfr. Part No.CJ1W-PA202
BrandOmron
£171.50
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
£354.00
Each
Units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
RS Stock No. 698-7587
Mfr. Part No.1769-PB2
£165.00
Each
Units
1769 Series Compact I/O Module 19.2 → 31.2 V dc 5 V dc, 24 V dc 2 A - 70mm 118mm 87mm 0°C +60°C 70 x 118 x 87 mm
RS Stock No. 282-3619
Mfr. Part No.TSX17ACC1
£36.29
Each
Units
TSX TSX17 Series - - - - - - - - - -
RS Stock No. 148-026
Mfr. Part No.BMXCPS2000
£183.00
Each
Units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 2.5 A 20W - - - 0°C +60°C -
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