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. 647-2502
Mfr. Part No.Q61P
HK$1,803.74
Each
units
Q61 PSU Series, Q Series 100 → 240 V ac 5V dc 6 A - - - - 0°C +55°C -
RS Stock No. 470-9470
Mfr. Part No.AC1254
HK$2,179.66
Each
units
AC1254 Series AS-i - 29.5 → 31.6V dc - - - - - -10°C +70°C -
RS Stock No. 827-3786
Mfr. Part No.140CPS11420C
HK$12,904.32
Each
units
Modicon Quantum Modicon Quantum 93 → 132 V ac, 170 → 264 V ac - 11 A - - - - -25°C +70°C -
RS Stock No. 746-6081
Mfr. Part No.3RX9503-0BA00
BrandSiemens
HK$4,735.24
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. 147-893
Mfr. Part No.BMXCPS3020
HK$4,255.68
Each
units
Modicon M340 Modicon M340 24 → 48 V dc 24V dc 4.5 A 31.2W - - - 0°C +60°C -
RS Stock No. 135-5202
Mfr. Part No.140CPS12420
HK$12,366.64
Each
units
- Modicon PLC - - - - - - - - - -
RS Stock No. 875-5742
Mfr. Part No.FX5-1PSU-5V
BrandMitsubishi
HK$1,458.60
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. 703-7078
Mfr. Part No.MPA5500/RS
BrandMTL
HK$1,234.95
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
New
RS Stock No. 197-4295
Mfr. Part No.89451003
BrandCrouzet
HK$347.32
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
HK$2,039.41
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
HK$4,255.68
Each
units
Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
RS Stock No. 888-8460
Mfr. Part No.PBSB
BrandOpto 22
HK$1,065.20
Each
units
Mistic Series Optomux 220 V ac 5V dc 500 mA - 114.3mm 99.1mm - -25°C +65°C -
RS Stock No. 2550074124
Mfr. Part No.HA5-1.5-OV-A+G
BrandCondor
HK$841.96
Each
units
- - - - - - - - - - - -
RS Stock No. 2550074134
Mfr. Part No.HC48-1-A+G
BrandCondor
HK$1,312.92
Each
units
- - - - - - - - - - - -
RS Stock No. 2550074148
Mfr. Part No.HN28-3-A+G
BrandCondor
HK$1,341.76
Each
units
- - - - - - - - - - - -
RS Stock No. 2550074217
Mfr. Part No.GPC80PG
BrandCondor
HK$1,788.36
Each
units
- - - - - - - - - - - -
RS Stock No. 2550074128
Mfr. Part No.HAD15-0.4-A+G
BrandCondor
HK$1,031.80
Each
units
- - - - - - - - - - - -
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