Industrial Automation Human-Machine Interfaces (HMIs)
Nkokhi Group – Industrial Automation HMI Supply, Replacement & Support in South Africa
Nkokhi Group supplies Industrial Automation Human-Machine Interfaces (HMIs) for manufacturing plants, processing facilities, water and wastewater plants, mining operations, packaging lines, material handling systems, OEM machinery and industrial control systems across South Africa.
We can assist with sourcing new, replacement, obsolete and hard-to-find HMI panels, including operator terminals, touchscreen HMIs, industrial panel PCs and HMI display units from leading automation manufacturers.
Industrial HMI Supplier South Africa
An Industrial HMI (Human-Machine Interface) provides the operator interface between people and industrial automation equipment such as PLCs, VFDs, servo drives, sensors, controllers and SCADA systems.
Modern HMIs allow operators to:
- Monitor machine status
- View process parameters
- Start and stop equipment
- Adjust setpoints
- View alarms and faults
- Monitor production data
- Manage recipes
- Display trends and historical information
- Diagnose machine faults
- Interface with PLCs and automation networks
- Access production information
- Integrate with supervisory and plant-level systems
Siemens describes SIMATIC HMI as a scalable visualization platform ranging from machine-level operator panels through PC-based systems for complex industrial plants.
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HMI Models & Product Families
Nkokhi Group can source a wide range of HMI models and product families. Availability depends on manufacturer, production status and project requirements.
Siemens SIMATIC HMI
Siemens SIMATIC HMI is widely used with Siemens PLC and automation systems.
Common families include:
- SIMATIC HMI KTP400 Basic
- SIMATIC HMI KTP700 Basic
- SIMATIC HMI KTP900 Basic
- SIMATIC HMI KTP1200 Basic
- SIMATIC HMI TP700 Comfort
- SIMATIC HMI TP900 Comfort
- SIMATIC HMI TP1200 Comfort
- SIMATIC HMI TP1500 Comfort
- SIMATIC HMI TP1900 Comfort
- SIMATIC HMI TP2200 Comfort
- SIMATIC HMI MTP700 Unified Comfort
- SIMATIC HMI MTP1000 Unified Comfort
- SIMATIC HMI MTP1200 Unified Comfort
- SIMATIC HMI MTP1500 Unified Comfort
- SIMATIC HMI MTP1900 Unified Comfort
- SIMATIC HMI MTP2200 Unified Comfort
Siemens’ current SIMATIC HMI portfolio covers operator panels and PC-based visualization solutions for different industrial environments and automation requirements.
Allen-Bradley / Rockwell Automation HMI
Rockwell Automation
Common Allen-Bradley HMI families include:
- PanelView 800
- PanelView Plus 6
- PanelView Plus 7
- PanelView Plus 7 Standard
- PanelView Plus 7 Performance
- PanelView 5310
- PanelView 5510
- PanelView 5000
- PanelView 700
- PanelView 1000
- PanelView 1250
- PanelView 1500
These HMIs are commonly associated with Allen-Bradley PLC platforms such as CompactLogix and ControlLogix.
Schneider Electric Harmony HMI
Schneider Electric
Schneider Electric’s HMI portfolio includes:
- Harmony ST6
- Harmony GTU
- Harmony GTUX
- Harmony GTO
- Harmony GK
- Harmony P6
- Harmony SCU
- Harmony STO
- Harmony STU
- Harmony Industrial PC
- Magelis HMI
- Magelis GTU
- Magelis GTO
- Magelis GK
- Magelis STO
- Magelis STU
Schneider Electric’s HMI catalogue includes Harmony and legacy Magelis product families, together with software such as EcoStruxure Operator Terminal Expert and Vijeo Designer.
Mitsubishi Electric HMI
Mitsubishi Electric
Popular Mitsubishi HMI families include:
- GOT2000
- GT27 Series
- GT25 Series
- GT21 Series
- GOT SIMPLE
- GS2107
- GS2110
- GT2507
- GT2510
Mitsubishi GOT HMIs are widely used with MELSEC PLC systems and can also support multi-vendor communication depending on the model and communication drivers.
Omron HMI
Omron
Common Omron HMI families include:
- Omron NA Series
- NA5-7W
- NA5-9W
- NA5-12W
- NA5-15W
- Omron NB Series
- NB5Q
- NB7W
- NB10W
- NS Series
Omron HMIs are frequently integrated with Sysmac and other Omron automation platforms.
Pro-face HMI
Pro-face
Common Pro-face product families include:
- GP4000
- GP4100
- SP5000
- LT4000M
- GC4000
- GP Series
- ST Series
Pro-face supports communication with a wide range of PLC manufacturers. Its published driver information includes Mitsubishi, Omron, Siemens, Rockwell Automation, Schneider Electric, Keyence, Hitachi, Yaskawa and other automation platforms.
Weintek HMI
Popular Weintek families include:
- MT8000 Series
- MT8070iE
- MT8100iE
- MT8150iE
- cMT Series
- cMT2040X
- cMT2078X
- cMT2108X2
- cMT2128X
- cMT2158X
Weintek HMIs are particularly useful where communication with multiple automation brands and industrial protocols is required.
Red Lion HMI
Common Red Lion HMI families include:
- Graphite
- Graphite G03
- Graphite G05
- Graphite G07
- Graphite G10
- Graphite G12
- Graphite G15
- CR1000
- CR3000
Red Lion is known for multi-protocol industrial interfaces and data connectivity.
Other Industrial HMI Manufacturers
Depending on the application, Nkokhi Group can also source HMIs from manufacturers including:
- ABB
- Beckhoff
- Advantech
- Fuji Electric
- IDEC
- Eaton
- Phoenix Contact
- WAGO
- Unitronics
- Keyence
- Turck
- Pepperl+Fuchs
- Panasonic
- Delta Electronics
- FATEK
- LS Electric
- Maple Systems
- Beijer Electronics
- Axiomtek
- Winmate
Industrial HMI Applications
Nkokhi Group can supply HMIs for applications including:
Manufacturing
- Production lines
- Assembly machines
- Packaging equipment
- Conveyor systems
- Process machinery
- Automated production cells
Mining & Heavy Industry
- Crushing plants
- Screening plants
- Conveyor systems
- Material handling
- Processing plants
- Pump stations
- Mobile and fixed industrial equipment
Water & Wastewater
- Water treatment plants
- RO plants
- Pump stations
- Dosing systems
- Filtration systems
- Reservoir control
- Wastewater treatment
Energy & Utilities
- Generator systems
- Electrical control systems
- Substations
- Pumping systems
- Energy monitoring
- Utility automation
Food & Beverage
- Filling lines
- Processing equipment
- Packaging systems
- CIP systems
- Temperature control
- Batch processing
PLC & HMI Integration
The HMI is normally connected to the PLC or controller through an industrial communication network.
Typical protocols and interfaces include:
- Ethernet/IP
- PROFINET
- PROFIBUS
- Modbus TCP
- Modbus RTU
- OPC UA
- EtherCAT
- CC-Link
- CC-Link IE
- CAN/CANopen
- RS-232
- RS-422
- RS-485
- Serial communication
- MQTT on compatible platforms
Industrial HMI systems can interface with multiple PLC brands. For example, Pro-face’s published compatibility information includes Siemens SIMATIC, Rockwell Automation, Mitsubishi, Omron, Schneider Electric and other PLC platforms.
HMI Replacement & Obsolete HMI Sourcing
Nkokhi Group can assist when an existing HMI is:
- Faulty
- Damaged
- Obsolete
- No longer manufactured
- Showing touchscreen faults
- Showing display problems
- Experiencing communication failures
- Unable to boot
- Missing software or configuration
- No longer supported by the OEM
Where the original HMI is discontinued, we can investigate:
Original replacement → New equivalent → Current-generation replacement → Compatible alternative → Refurbished/used unit
Replacement should not be based solely on screen size. Communication protocol, software compatibility, panel cut-out dimensions, power supply, firmware, I/O requirements and project files should also be checked.
HMI Supply for Industrial Automation Projects
Nkokhi Group can support customers with:
- New HMI supply
- Replacement HMI panels
- Obsolete HMI sourcing
- HMI displays
- Touchscreen replacements
- Industrial panel PCs
- HMI accessories
- Communication cables
- Programming cables
- Mounting accessories
- Power supplies
- Memory/storage accessories where applicable
- Engineering and integration requirements
- Cross-reference investigations
- International sourcing
For an accurate quotation, customers should provide the HMI manufacturer’s name, complete model number and photographs of the rating label.
Tips for Choosing an Industrial HMI
1. Confirm the PLC
Identify the PLC or controller before selecting the HMI.
For example:
Siemens PLC → Siemens SIMATIC HMI
Allen-Bradley PLC → PanelView
Mitsubishi PLC → GOT
However, multi-protocol HMIs can often communicate with several manufacturers.
2. Check the exact model number
Do not quote from a partial model number.
The difference between variants can include:
- Display size
- Communication ports
- Operating system
- Software compatibility
- Voltage
- Memory
- Certifications
- Mounting dimensions
- Environmental rating
3. Check the panel cut-out
A replacement HMI must physically fit the existing control panel or cabinet.
4. Check communication protocols
Confirm whether the system requires:
PROFINET, Ethernet/IP, Modbus TCP, Modbus RTU, PROFIBUS, OPC UA, EtherCAT, CC-Link or another protocol.
5. Check the HMI project software
The replacement HMI may require a particular engineering environment such as:
- TIA Portal / WinCC
- FactoryTalk View
- EcoStruxure Operator Terminal Expert
- Vijeo Designer
- GT Designer
- Sysmac Studio
- Pro-face GP-Pro EX
- EasyBuilder Pro
6. Consider the environment
For harsh industrial environments, consider:
- IP rating
- NEMA rating
- Operating temperature
- Humidity
- Vibration
- Dust
- Chemical exposure
- Washdown requirements
- Screen brightness
- Glove operation
7. Keep a backup
Always maintain a backup of:
- HMI project
- PLC program
- Recipes
- User configuration
- Firmware information
- Communication settings
- Passwords/access credentials where legitimately available
This can significantly simplify future HMI replacement.
What Information Do We Need for an HMI Quote?
Send Nkokhi Group:
📷 1. Photograph of the existing HMI
🏷️ 2. Photograph of the nameplate/rating label
🔢 3. Complete HMI part/model number
⚙️ 4. PLC manufacturer and model
🔌 5. Communication protocol
📐 6. Screen size or panel cut-out dimensions
📄 7. Existing HMI project/software information if available
🌍 8. Required quantity
We can then investigate the correct replacement or equivalent.
Why Choose Nkokhi Group?
Nkokhi Group supports industrial customers with sourcing of automation, electrical, electronic and industrial equipment.
Our sourcing capability is particularly useful for customers looking for:
- Hard-to-find automation components
- Obsolete industrial electronics
- Replacement HMI panels
- PLC modules
- Industrial control equipment
- OEM automation components
- Internationally sourced equipment
We can assist customers in South Africa with sourcing requirements and quotation coordination.
Parts-on-demand: Quote → Payment → Order → Delivery or Collection.
Frequently Asked Questions
What is an Industrial HMI?
An Industrial HMI, or Human-Machine Interface, is an operator interface used to monitor and control industrial machines, PLCs and automated processes.
What is the difference between an HMI and a PLC?
A PLC performs control logic, while an HMI provides the operator interface for monitoring, controlling and configuring the process.
Can you supply Siemens HMI panels?
Yes. Nkokhi Group can source Siemens SIMATIC HMI models including Basic, Comfort and Unified families, subject to availability.
Can you supply Allen-Bradley PanelView HMIs?
Yes. We can assist with sourcing PanelView and other Allen-Bradley HMI products.
Can an HMI communicate with a different PLC brand?
Potentially, yes. Many modern HMIs support multiple communication protocols and PLC drivers. Compatibility must be confirmed for the exact HMI and PLC models.
Can you source obsolete HMI panels?
Yes. Nkokhi Group can investigate obsolete, discontinued and hard-to-find HMI models and look for original, replacement or compatible solutions.
Can you replace a damaged HMI touchscreen?
Depending on the model, replacement of the complete HMI or touchscreen/display assembly may be possible.
What information should I send for an HMI quotation?
Send the model number, nameplate photograph, front photograph, PLC model and quantity. Additional information such as communication protocol and panel cut-out dimensions is useful.
Do you supply HMI panels in South Africa?
Yes. Nkokhi Group supplies industrial automation equipment to customers in South Africa, subject to product availability and sourcing requirements.
Can you source HMI panels from overseas?
Yes. Where local availability is limited, Nkokhi Group can investigate international sourcing options.
Request an Industrial HMI Quote
Looking for an Industrial HMI in South Africa?
Send us your HMI model number and photographs, and Nkokhi Group can assist with identifying the correct unit or replacement.
Nkokhi Group (PTY) Ltd
Industrial Automation | PLCs | HMIs | Control Systems | Industrial Electronics
Request a quotation today for:
Industrial HMI • HMI Panel • PLC HMI • Touchscreen HMI • Siemens HMI • Allen-Bradley HMI • Schneider HMI • Mitsubishi HMI • Omron HMI • Pro-face HMI • Weintek HMI