Touchscreen / HMI control cabinets
- Screen: 7–15 in. industrial touchscreen, mainstream brands including Siemens / Schneider / Weinview
- Mounting: flush in the cabinet door, CNC cutout + IP65 door gasket
- Configuration: four standard screen types — main / parameter setting / alarms / trends — customized to the process
- Communication: Ethernet (S7 / Modbus TCP) or serial (Modbus RTU), pre-wired when supplied in the same cabinet as the PLC
- Access levels: two levels, operator / engineer; critical parameters changed at engineer level
Specifications
The table below covers 80% of factory distribution room cases. Anything outside it we can still build — those are engineered items, quoted separately, with an indicative price the same day.
| Type | Wall-mount / floor-standing / sloped operator console; screen can be door-mounted or on a separate operator panel |
|---|---|
| Standard sizes (W×D×H) | 600×400×1000 (wall-mount) / 800×600×1800 (floor-standing) mm, custom sizes available |
| Screen cutout | CNC-machined to the screen maker's mounting drawing, cutout tolerance ±0.3 mm |
| IP rating | Enclosure IP54; screen door face IP65 (front panel) |
| Screen mounting | Standard snap-in / quick-lock mounting — screen cable stays connected when the door opens |
| Cooling | Natural convection cooling; filtered fan supplied when internal temperature rise exceeds 15 K |
| HMI power supply | AC 220V or DC 24V, with dedicated breaker and switching power supply |
|---|---|
| HMI brand | Siemens / Schneider / Weinview / Kunlun Tongtai — selected by budget and ecosystem |
| Communication | Ethernet (Modbus TCP / S7) or RS485 (Modbus RTU) |
| Matching control core | Supplied as a matched set from the same plant as the PLC control cabinet, with a unified I/O list |
| Data functions | Alarm log, historical trends, recipe management, USB export (depending on HMI model) |
| Access control | Two-level passwords for operator / engineer, with tiered parameter editing rights |
| Component brands | Schneider / ABB / Siemens / Chint; customer-supplied components accepted for factory installation |
| HMI + PLC standard configuration | HMI handles operation and monitoring, logic runs in the PLC — the most common architecture |
|---|---|
| HMI + variable frequency drive configuration | Frequency and start/stop set on the HMI, driving the VFD through the PLC or directly over Modbus |
| Distributed multi-HMI configuration | Local small HMI plus a central large HMI, with data aggregated through the PLC |
| Retrofit to existing cabinets | HMI added to existing relay cabinets for status monitoring, with no change to the original logic |
| Integrated operator console configuration | HMI recessed into a sloped operator console with pushbuttons and emergency stop — common at production line stations |
| Assembly standard | GB/T 7251.1 / IEC 61439-1 |
|---|---|
| Cutout protection | Splash check performed on the HMI mounting face to confirm the door gasket seals properly |
| Routine tests (every unit) | Insulation resistance, power-frequency withstand voltage, HMI communication and screen commissioning under power |
| Configuration delivery | Configuration source files and operating instructions ship with the unit; a failed HMI can be replaced with the same model as a direct drop-in |
| Documents with shipment | Schematic diagrams, terminal list, I/O list, BOM, test report |
Five steps to specify your run
A configuration summary is generated as you go. It travels with your inquiry, saving a round of confirmation.
Build details
Systems have been in service for decades, and the failure points are always the same few: poor busbar contact, water ingress at the door seal, high temperature rise in the correction cabinet, and mis-phased outgoing feeders. The six hard rules below are written for exactly these points — every cabinet can be traced to them.
CNC-machined cutout tolerance
Screen cutouts are CNC-machined to ±0.3 mm, so the screen seats flat with no lifting edges and no water ingress; the IP65 door gasket seals all the way around.
Screens built around the operating sequence
Routine operations are completed in one step on the main screen, with no digging through nested menus; alarm pop-ups stay on top until acknowledged, so an operator is up to speed after ten minutes of training.
Screen and PLC communicate before shipment
The screen and PLC are matched at the factory and tested together in the same cabinet before shipment, so the system runs as soon as power is applied on site — no separate commissioning.
Configuration files ship with the cabinet
Configuration source files and the tag list ship with the cabinet, so future screen changes or a screen replacement don't start from scratch.
Quick-lock door opening structure
The HMI is secured with quick-lock clips, so the panel cable stays connected when the cabinet door is opened for service, reducing connector wear from repeated plugging.
Critical parameters stay under control
Operators can only start, stop and view data. Setpoints and PID parameters can only be changed at engineer level, keeping operating errors behind a password.
Photos & enclosure construction
Below are photos taken in our own shop — from the complete unit down to the internal busbars and secondary wiring. Every build detail can be checked item by item.
Image key: 01–05 are shop photos (the numbers match the shot list). The line drawing shows the front elevation of the enclosure; dimensions match the specification table above.
Where these cabinets go
These are the routine applications — we can talk scheme and configuration directly. For the industry view, see the industry pages.
Pump stations and water treatment
Level, flow and equipment status on one screen, with rotation strategy visualized.
Production line equipment integration
HMI recessed into the workstation operator console, recipe switching and output statistics.
Air compressor and refrigeration rooms
Centralized monitoring of multiple units, energy trend export.
Upgrade of existing cabinets
Add an HMI to relay cabinets for status monitoring — a low-cost upgrade that leaves the original logic untouched.
Test benches and inspection equipment
Parameter setting and curve logging, data export via USB drive.
Custom equipment OEM
Ships with the equipment, with the interface customized to the end user's habits.
Commercial terms
Specification dated September 2026; quotations follow this.
| Drawings & design | Free |
| MOQ | 1 unit (5 or more recommended for production) |
| Production lead time | 15-25 days after drawing approval |
| on-time delivery | 98% |
| Warranty | 12 months |
| Loading port | Ningbo / Shanghai, China |
| Component brands | Schneider / ABB / Siemens / Chint |
| Factory visit & dispatch confirmation | Factory visits welcome; finished-cabinet photos and video before dispatch |
| Capacity | 5,800+ units / year |
Documents for your engineering team
Selection manual, outline dimensions and RFQ checklist — for the customer's electrical engineer. All three documents are being organized by product line; download links go live once complete.
Six questions procurement and electrical engineers ask most
How do I choose a touchscreen brand?
Look at ecosystem and budget: if the equipment uses a Siemens PLC, pair it with a Siemens HMI (smoothest compatibility); for general Modbus applications, Weinview offers strong value and fast domestic service; Schneider for its own ecosystem. Price for the same size can differ by up to 3x — tell us your PLC model and budget and we will help you choose.
Do you create the HMI screens?
Yes. You provide the process flow and operating habits (or let us design from the I/O list). Four standard screen types (main / parameters / alarms / trends) plus custom pages, confirmed by screenshot before shipment. Source files ship with the goods so you can modify them later.
How do we replace an HMI on site if it fails?
The door cutout is made to the HMI maker's standard mounting dimensions, so a same-model HMI drops straight in. The configuration program can be loaded from a USB drive or remotely. We ship a configuration backup and recovery procedure with the goods.
How do the HMI and PLC communicate?
When supplied in the same cabinet, Ethernet or serial wiring is pre-installed inside the cabinet and the communication parameters are written into the drawings. For cross-cabinet or cross-room runs, note the distance and we will select cable / fiber / wireless.
Can it be used outdoors or in dusty environments?
The front panel is IP65, and the cabinet is upgraded to suit the environment (IP65 enclosure, anti-condensation heater, stainless steel enclosure). For very cold or hot locations, choose a wide-temperature HMI (-20 to 60 °C) and state the installation environment when ordering.
Can it run alongside a higher-level SCADA system?
Yes. If the PLC has enough communication ports, the HMI and SCADA can poll data in parallel. If ports are short or the distance is long, add a communication module or gateway on the PLC side — this will be stated clearly in the proposal.
Other cabinet types in the same main circuit
Related products use color-block placeholders for now (product photos not yet complete; they will be replaced together). Internal links will be filled in once live URLs are confirmed.
Tell us your process flow and we will build the screens to match
Send us your process flow or I/O list and we will provide a free HMI + PLC complete cabinet proposal and screen plan · quotation within 24 hours. Direct from the source factory, MOQ 1 unit, 15–25 day delivery, 1-year warranty.
ISO 9001:2015 · CE(LVD+EMC) · CQC · IP65
When you write, include: single-line diagram or primary scheme, switch room layout, load list, and component brand requirements. You do not need complete drawings — capacity and cabinet type are enough to start.