PLC, SCADA & Industrial Automation Solutions South Africa
PLC Supplier, SCADA Systems & Industrial Automation Equipment in South Africa
Nkokhi Group supplies and sources PLC, SCADA and industrial automation solutions in South Africa for mining, manufacturing, water and wastewater, energy, utilities, process plants, OEM machinery and critical infrastructure.
We supply PLC modules, programmable logic controllers, SCADA hardware, HMI systems, RTUs, industrial networking equipment, remote I/O, automation controllers, industrial computers, VFDs, instrumentation and control-system components from leading international manufacturers.
Whether you require a new PLC system, replacement PLC module, SCADA component, obsolete automation part, industrial control panel component or complete automation solution, Nkokhi Group can assist with sourcing and supply across South Africa.
Our capabilities cover both modern automation systems and legacy industrial control systems, including difficult-to-source and discontinued components.
PLC, SCADA & Industrial Automation Solutions
Industrial automation connects field instruments, sensors, actuators, controllers, HMIs, SCADA systems and industrial networks to create an integrated control environment.
Nkokhi Group can assist with:
- PLC systems
- PLC CPUs
- PLC I/O modules
- Analogue input/output modules
- Digital input/output modules
- PLC communication modules
- PLC power supplies
- Remote I/O
- HMI systems
- SCADA systems
- RTU systems
- Industrial PCs
- Industrial Ethernet
- PROFIBUS
- PROFINET
- Modbus TCP/RTU
- EtherNet/IP
- OPC UA
- Industrial switches
- Automation gateways
- VFDs and variable-speed drives
- Soft starters
- Industrial instrumentation
- Control panels
- MCC automation
- Safety PLCs
- Safety relays
- Industrial sensors
- Process-control equipment
- Automation spare parts
Nkokhi Group’s existing industrial automation portfolio covers PLC/PAC control, HMI, SCADA, MCCs, VFDs, remote I/O, instrumentation, safety systems and industrial networking.
PLC Solutions in South Africa
Programmable Logic Controllers
A PLC – Programmable Logic Controller – is one of the central components of modern industrial automation.
PLC systems monitor inputs from sensors and field devices, execute programmed logic and control outputs such as motors, valves, pumps, conveyors and other machinery.
PLC equipment we supply and source
- PLC CPUs
- Central processing units
- Digital input modules
- Digital output modules
- Analogue input modules
- Analogue output modules
- Mixed I/O modules
- Communication processors
- Ethernet modules
- Serial communication modules
- Power supply modules
- Expansion modules
- Remote I/O
- Safety PLCs
- PLC racks
- Backplanes
- Memory modules
- Programming cables
- PLC accessories
We can work from a PLC part number, model number, photograph, nameplate, machine model or existing module when identifying replacement automation equipment.
Popular PLC Models & Series
Siemens PLC
Popular Siemens SIMATIC automation ranges include:
- Siemens S7-1200
- Siemens S7-1500
- Siemens S7-300
- Siemens S7-400
- Siemens ET 200
- Siemens ET 200SP
- Siemens ET 200S
- Siemens SIMATIC S5
- Siemens LOGO!
- Siemens SIMATIC IPC
- Siemens communication processors
Siemens PLC Modules
Examples include:
- CPU modules
- DI modules
- DO modules
- AI modules
- AO modules
- CM communication modules
- CP communication processors
- ET 200 remote I/O
- PROFINET modules
- PROFIBUS modules
- SITOP power supplies
Schneider Electric PLC
Nkokhi Group supplies and sources Schneider Electric PLC modules and Modicon automation equipment.
Popular Schneider ranges include:
- Modicon M221
- Modicon M241
- Modicon M251
- Modicon M258
- Modicon M340
- Modicon M580
- Modicon Quantum
- Modicon Premium
- Modicon Momentum
- Modicon STB
- Modicon TM3
- Modicon TM5
Schneider’s current industrial automation portfolio includes PLC/PAC controllers, drives, SCADA software, telemetry and process automation technologies.
Allen-Bradley / Rockwell Automation PLC
Popular Allen-Bradley systems include:
- MicroLogix
- Micro800
- CompactLogix
- ControlLogix
- FlexLogix
- POINT I/O
- FLEX I/O
- PanelView
- GuardLogix
- Compact GuardLogix
Allen-Bradley PLC Modules
- ControlLogix CPU modules
- ControlLogix I/O
- CompactLogix I/O
- POINT I/O
- FLEX I/O
- Ethernet communication modules
- DeviceNet modules
- ControlNet modules
- EtherNet/IP modules
- Power supplies
ABB PLC & Automation
Nkokhi Group can source ABB automation equipment including:
- ABB AC500 PLC
- ABB AC500-eCo
- ABB AC800M
- ABB S800 I/O
- ABB S900 I/O
- ABB CP600 HMI
- ABB automation controllers
- ABB communication modules
- ABB industrial drives
Mitsubishi PLC
Popular Mitsubishi Electric PLC ranges include:
- Mitsubishi FX Series
- FX3U
- FX5U
- Mitsubishi Q Series
- Mitsubishi L Series
- Mitsubishi iQ-F
- Mitsubishi iQ-R
- Mitsubishi GOT HMI
- Mitsubishi CC-Link
- Mitsubishi FR drives
Omron PLC
Common Omron automation platforms include:
- Omron CP Series
- Omron CJ Series
- Omron CS Series
- Omron NX Series
- Omron NJ Series
- Omron NA HMI
- Omron NB HMI
- Omron EtherCAT
- Omron industrial controllers
SCADA Systems South Africa
Supervisory Control and Data Acquisition
SCADA – Supervisory Control and Data Acquisition – provides operators with centralised visibility and supervisory control of industrial processes.
A typical SCADA system can integrate:
- PLCs
- RTUs
- HMIs
- SCADA servers
- Engineering stations
- Operator stations
- Industrial PCs
- Remote I/O
- Instrumentation
- Industrial Ethernet
- Data historians
- Alarm systems
- Reporting systems
- Telemetry
- Communication gateways
Nkokhi Group can source components used in SCADA architectures, including SCADA servers, HMIs, communication gateways, RTUs, PLCs and industrial networking equipment.
Popular SCADA Platforms
Siemens
- WinCC
- WinCC Professional
- WinCC Unified
- WinCC Runtime
- SIMATIC HMI
Schneider Electric
- EcoStruxure Geo SCADA Expert
- EcoStruxure Plant
- EcoStruxure Process Expert
- EcoStruxure Operator Terminal Expert
- EcoStruxure Control Expert
Rockwell Automation
- FactoryTalk View
- FactoryTalk View SE
- FactoryTalk View ME
- FactoryTalk Optix
ABB
- System 800xA
- ABB Ability
- ABB SCADA solutions
AVEVA
- AVEVA System Platform
- AVEVA InTouch
- AVEVA Historian
Other SCADA Technologies
- Ignition
- Wonderware
- GE iFIX
- GE CIMPLICITY
- ICONICS
- Citect SCADA
- VTScada
HMI – Human Machine Interface
Nkokhi Group can supply and source industrial HMI equipment for machine and process-control applications.
Popular HMI manufacturers
- Siemens SIMATIC HMI
- Schneider Harmony
- Allen-Bradley PanelView
- ABB CP600
- Mitsubishi GOT
- Omron NB
- Omron NA
- Weintek
- Delta HMI
- Advantech industrial displays
HMIs can display:
- Machine status
- Alarms
- Trends
- Production information
- Process values
- Motor status
- Pressure
- Temperature
- Flow
- Level
- Energy consumption
- Operator controls
Industrial Automation Networking
Modern PLC and SCADA systems depend on reliable industrial communications.
Nkokhi Group can source:
- PROFINET
- PROFIBUS
- EtherNet/IP
- Modbus TCP
- Modbus RTU
- EtherCAT
- CANopen
- DeviceNet
- ControlNet
- CC-Link
- IO-Link
- OPC UA
- Industrial Ethernet
- RS232
- RS422
- RS485
- Fibre-optic industrial networking
Industrial networks can connect PLCs, remote I/O, drives, HMIs, SCADA servers, instrumentation and other automation equipment.
Remote I/O & RTU Systems
Remote I/O reduces the amount of field wiring required between sensors and central PLC cabinets and is particularly useful for large industrial facilities.
Remote I/O systems
- Siemens ET 200
- Allen-Bradley POINT I/O
- Allen-Bradley FLEX I/O
- Schneider Modicon STB
- Schneider TM3
- ABB S800 I/O
- Beckhoff EtherCAT I/O
- WAGO I/O
- Phoenix Contact Axioline
- Advantech remote I/O
RTU Systems
We can also source Remote Terminal Units (RTUs) for:
- Water infrastructure
- Pump stations
- Remote facilities
- Telemetry
- Utilities
- Mining
- Oil & gas
- Power infrastructure
- Remote monitoring
Industrial Automation Equipment
A complete industrial automation system may include:
Control
- PLCs
- PACs
- DCS
- RTUs
- Safety PLCs
Operator Interface
- HMIs
- Industrial PCs
- Operator stations
- SCADA workstations
Communication
- Ethernet switches
- Fibre switches
- Communication modules
- Gateways
- Protocol converters
Motor Control
- VFDs
- Soft starters
- Contactors
- Motor protection
- MCC components
Instrumentation
- Pressure transmitters
- Flow meters
- Level transmitters
- Temperature sensors
- Radar level sensors
- Ultrasonic sensors
- Proximity sensors
- Encoders
VFD & Variable-Speed Drive Solutions
Variable Frequency Drives are commonly used for controlling pumps, conveyors, fans, compressors, crushers and other motor-driven equipment.
Popular VFD manufacturers
Siemens
- SINAMICS G120
- G120X
- G130
- G150
ABB
- ACS150
- ACS355
- ACS580
- ACS880
Schneider Electric
- Altivar ATV320
- ATV340
- ATV630
- ATV930
Rockwell Automation
- PowerFlex 4
- PowerFlex 40
- PowerFlex 525
- PowerFlex 753
- PowerFlex 755
Danfoss
- VLT FC 102
- VLT FC 302
- VLT Micro Drive
Delta
- VFD-E
- VFD-EL
- VFD-M
- C200
- C300
Industrial Automation Manufacturers
Nkokhi Group can source equipment from leading international manufacturers, subject to specification and availability.
| Manufacturer | Typical Products |
|---|---|
| Siemens | PLC, HMI, SCADA, VFD, networking |
| Schneider Electric | PLC, SCADA, HMI, VFD, MCC |
| Rockwell Automation | Allen-Bradley PLC, HMI, VFD, I/O |
| ABB | PLC, SCADA, drives, instrumentation |
| Mitsubishi Electric | PLC, HMI, drives, motion |
| Omron | PLC, HMI, sensors, automation |
| Honeywell | DCS, process automation |
| Emerson | DCS, instrumentation, process control |
| Yokogawa | DCS, SCADA, instrumentation |
| Beckhoff | PLC, IPC, EtherCAT, I/O |
| WAGO | PLC, I/O, terminals |
| Phoenix Contact | PLC, I/O, power, networking |
| Advantech | Industrial PCs, I/O, networking |
| Delta | PLC, HMI, VFD, servo |
| Danfoss | VFD and motor control |
| Eaton | Motor control and electrical equipment |
| Weidmüller | Industrial connectivity and automation |
| WEG | Motors, drives and motor control |
PLC & SCADA Applications in South Africa
Mining Automation
PLC and SCADA systems are widely used for:
- Crushers
- Conveyors
- Screens
- Pumps
- Dewatering
- Ventilation
- Material handling
- Processing plants
- Thickening
- Tailings systems
- Water systems
- Monitoring systems
Nkokhi Group can source automation equipment suitable for demanding mining environments.
Water & Wastewater Automation
Automation solutions can be used for:
- Water treatment plants
- RO plants
- Pump stations
- Sewage treatment
- Filtration
- Chemical dosing
- Level control
- Flow control
- Pressure control
- Remote telemetry
Manufacturing Automation
- Production lines
- Packaging
- Assembly
- Conveyors
- Robotics
- Machine automation
- Process control
- Material handling
Energy & Utilities
- Generator systems
- Power monitoring
- Pumping stations
- Substations
- Energy management
- Remote monitoring
- Utility SCADA
Food & Beverage
- Processing
- Filling
- Packaging
- Conveyors
- CIP systems
- Refrigeration
- Pump control
PLC Programming & Automation Support
PLC programming and engineering services may include:
- PLC programming
- PLC troubleshooting
- PLC fault finding
- PLC installation
- PLC commissioning
- PLC upgrades
- PLC migration
- PLC backup and recovery
- Industrial network configuration
- Machine automation
- PLC panel design
- Remote PLC support
For projects requiring programming or commissioning, the appropriate engineering scope should be confirmed before work begins. TOSOG, within the wider group ecosystem, also lists PLC programming, troubleshooting, installation, commissioning, upgrades and industrial networking services.
PLC & SCADA Replacement Parts
Is your PLC, HMI or SCADA module obsolete or difficult to find?
Nkokhi Group can assist with sourcing:
- New PLC modules
- OEM replacement modules
- Aftermarket PLC modules
- Refurbished automation modules
- Reconditioned equipment
- Legacy PLC components
- Obsolete PLCs
- Communication modules
- I/O modules
- Power supplies
- HMIs
- SCADA hardware
- Industrial PCs
- RTUs
Availability and condition should be confirmed against the specific part number before ordering.
How to Request a PLC or Automation Quote
Send Nkokhi Group as much information as possible:
1. Manufacturer
Example: Siemens, Schneider, ABB, Allen-Bradley.
2. Part Number
Example: 6ES7...
3. Model
Example: S7-1500.
4. Quantity
Example: 2 units.
5. Application
Machine, plant, pump station, conveyor, etc.
6. Existing Equipment
Send photographs of the existing module, nameplate or control panel.
7. Required Condition
- New
- OEM
- Aftermarket
- Refurbished
- Reconditioned
- Equivalent
This information helps reduce the risk of supplying an incompatible replacement.
Tips When Buying PLC & SCADA Equipment
1. Always verify the exact part number
Two modules can look similar but have completely different specifications.
2. Check hardware compatibility
Confirm compatibility with the PLC CPU, rack, firmware and communication architecture.
3. Check voltage requirements
Confirm whether the system uses 24 VDC, 110 VAC, 220/230 VAC or another supply.
4. Confirm I/O type
Check whether you require:
- Digital input
- Digital output
- Analogue input
- Analogue output
- Relay output
- Specialised I/O
5. Check communication protocols
Confirm whether the system uses:
- PROFINET
- PROFIBUS
- EtherNet/IP
- Modbus
- EtherCAT
- CAN
- OPC UA
6. Consider legacy equipment
If an old PLC is discontinued, investigate migration or replacement options rather than waiting until the equipment fails.
7. Request documentation
Where applicable, request:
- Datasheet
- Technical specification
- Compatibility information
- Test report
- Warranty information
- Product photographs
8. Keep PLC backups
Maintain current PLC programs, configurations and documentation to reduce downtime after a controller failure.
9. Protect automation networks
Industrial control systems should incorporate appropriate network segmentation, access controls, backups and OT cybersecurity measures.
Why Choose Nkokhi Group?
Multi-Brand Sourcing
Source PLC, SCADA and automation equipment across multiple international manufacturers.
South African Supply
We supply and source industrial automation equipment for customers across South Africa.
Difficult-to-Find Parts
We can assist with obsolete, legacy and hard-to-source PLC and automation components.
Multiple Equipment Conditions
Depending on availability, equipment may be sourced as:
- New
- OEM
- Aftermarket
- Refurbished
- Reconditioned
Technical Identification
Send a photograph, part number or nameplate and our team can assist with identifying the required component.
Industrial Applications
Our automation sourcing capabilities support mining, manufacturing, water, wastewater, utilities, energy, OEM machinery and process industries.
Frequently Asked Questions
What is a PLC?
A PLC, or Programmable Logic Controller, is an industrial computer used to monitor inputs, execute control logic and operate machinery or processes.
What is SCADA?
SCADA stands for Supervisory Control and Data Acquisition. It provides supervisory monitoring, data acquisition, alarms, trends and control of industrial processes.
What is the difference between PLC and SCADA?
A PLC primarily performs real-time machine or process control, while SCADA provides supervisory monitoring, data visualisation, alarms, historical data and higher-level control.
Does Nkokhi Group supply PLC modules in South Africa?
Yes. Nkokhi Group supplies and sources PLC CPUs, I/O modules, communication modules, power supplies and other industrial automation components across South Africa.
Which PLC brands can Nkokhi Group supply?
Common brands include Siemens, Schneider Electric, Rockwell Automation/Allen-Bradley, ABB, Mitsubishi Electric, Omron, Beckhoff, WAGO, Phoenix Contact and Delta.
Can you source obsolete PLC modules?
Yes. Nkokhi Group can assist with sourcing legacy, obsolete and difficult-to-find automation components, subject to availability.
Can I send a photograph of my PLC?
Yes. A clear photograph showing the manufacturer, model and part number can help identify the required component.
Do you supply SCADA equipment?
Yes. Nkokhi Group can source SCADA hardware and related components including servers, HMIs, industrial PCs, communication equipment, RTUs and PLC hardware.
Do you supply industrial automation equipment for mining?
Yes. Automation equipment can be sourced for mining applications including conveyors, crushers, pumps, processing plants, dewatering and material-handling systems.
Can you supply Siemens S7 PLCs?
Yes. Siemens SIMATIC S7-1200, S7-1500, S7-300, S7-400 and ET 200 equipment can be sourced subject to availability and specification.
Can you supply Schneider Modicon PLCs?
Yes. Schneider Modicon M221, M241, M251, M340 and M580 families are among the automation ranges Nkokhi Group can source.
Can you source Allen-Bradley PLC modules?
Yes. Allen-Bradley MicroLogix, CompactLogix, ControlLogix, POINT I/O and FLEX I/O equipment can be sourced.
Request a PLC, SCADA or Industrial Automation Quote
Looking for a PLC supplier in South Africa, SCADA system supplier, industrial automation company, PLC modules, HMI, RTU, industrial networking equipment or automation spare parts?
Send us your:
Manufacturer + Part Number + Description + Quantity + Photograph
Nkokhi Group can assist with identifying and sourcing the required PLC, SCADA and industrial automation equipment.
Nkokhi Group – PLC, SCADA & Industrial Automation Solutions South Africa