PLC Control Cabinet Manufacturer
Custom-engineered PLC control cabinets with Siemens S7-1200/1500 and Allen-Bradley systems. Backed by 25+ years of industrial automation expertise and 500+ successful deployments worldwide.
- Turnkey PLC cabinets are built around Siemens S7-1500/S7-1200 controllers with ET 200SP remote I/O and PROFINET.
- One team delivers electrical design to IEC 60204-1, TIA Portal programming and WinCC Unified SCADA (alarms, trends, OPC UA).
- Modbus RTU/TCP gateways integrate third-party package equipment; OPC UA connects to plant historians and MES.
- Panels are manufactured in-house near Beijing and FAT-tested before shipment.
- Export projects are shipment-ready in about 11–14 weeks, with remote video or SGS/BV/TÜV-witnessed FAT.
SENTRADO is a leading PLC control cabinet manufacturer specializing in custom-engineered automation solutions for industrial environments worldwide. With over 25 years of experience and a team of certified engineers, we design, build, and commission PLC control cabinets that meet the most demanding operational requirements across manufacturing, water treatment, energy, and building management sectors.
Our PLC control cabinets integrate industry-leading programmable logic controllers from Siemens (S7-1200, S7-1500 series) and Allen-Bradley (CompactLogix, ControlLogix) into robust, code-compliant enclosures rated IP54 for indoor installations and IP65 for outdoor and harsh environments. Every cabinet features redundant 24VDC power supplies with optional UPS backup, comprehensive surge protection, EMI filtering, and custom I/O configurations supporting up to 4,096 points per cabinet.
We deliver complete turnkey solutions including cabinet fabrication, PLC programming, HMI development, SCADA integration, and on-site commissioning. Our ISO 9001 certified manufacturing facility ensures every panel undergoes rigorous Factory Acceptance Testing (FAT) before shipment. As a Siemens Certified System Integrator and ABB Certified System Integrator, we provide genuine components, full warranty coverage, and lifecycle support for every system we deliver.
Our manufacturing facility in Hebei, China, houses advanced CNC equipment, automated wire processing systems, and a dedicated testing laboratory for comprehensive panel validation. We maintain strategic inventory of commonly specified Siemens and Allen-Bradley components, enabling faster delivery times compared to custom panel builders who source components on an order-by-order basis. This inventory strategy, combined with our experienced production team, allows us to maintain standard lead times of 2-4 weeks for most configurations while accommodating rush orders when project schedules demand it.Why Choose SENTRADO
Trusted by industrial clients across 8+ countries for reliable, certified automation solutions.
Authorized Partner Status
As a Siemens Certified System Integrator and ABB Certified System Integrator, we source genuine components at competitive prices and provide full manufacturer warranty coverage. Our certified partner status ensures access to the latest technical updates, firmware, and engineering support directly from the manufacturers.
End-to-End Project Support
From initial consultation and design engineering through manufacturing, programming, testing, shipping, and on-site commissioning, we manage the complete project lifecycle. Our integrated approach eliminates coordination gaps between suppliers and reduces your total project timeline by up to 30%.
Technical Specifications
Detailed specifications for our plc control cabinet configurations. Custom specifications available upon request.
| PLC Models | Siemens S7-1200, S7-1500; Allen-Bradley CompactLogix/ControlLogix |
| Power Supply | 24VDC redundant, UPS backup optional |
| Enclosure Rating | IP54 (indoor), IP65 (outdoor/harsh environment) |
| Communication Protocols | PROFINET, EtherNet/IP, Modbus TCP, OPC UA, PROFIBUS DP |
| I/O Capacity | Up to 4,096 points per cabinet (DI/DO/AI/AO/Specialty) |
| Operating Temperature | -20°C to +60°C (extended range available) |
| Input Voltage | AC 220V/380V/480V, 50/60Hz |
| Standards Compliance | IEC 61131-3, UL 508A, CE, CCC, ISO 9001 |
| Enclosure Material | Cold-rolled steel (1.5-2.0mm), stainless steel optional |
| Surge Protection | Type 2 SPD, EMI filter Class A/B |
Specifications may vary based on custom configurations. Contact us for detailed specifications.
Application Scenarios
Our plc control cabinets are deployed across diverse industries and applications worldwide.
Manufacturing Automation
Production line control, robotic cell integration, quality inspection systems, and process automation for discrete and continuous manufacturing operations. Supports mixed-model production with quick changeover capabilities.
Learn more →Water & Wastewater Treatment
SCADA-controlled water purification, wastewater treatment plants, pump station automation, chemical dosing systems, and distributed control with remote monitoring capabilities.
Learn more →HVAC & Building Management
Central plant optimization, chiller sequencing, AHU/PAU control, cooling tower management, and energy-efficient climate control for commercial and industrial facilities.
Learn more →Oil & Gas Processing
Hazardous area compliant cabinets (Zone 1/2), pipeline monitoring and control, wellhead automation, and refinery process control systems with SIL-rated safety integration.
Learn more →Power Generation & Distribution
Substation automation, generator control, load management, and power plant auxiliary systems with high-availability redundant configurations.
Learn more →Problems We Solve for PLC Control Cabinet Buyers
Real challenges our customers face — and how we solve them.
Long OEM Lead Times
Original manufacturers quote 8-16 weeks for custom PLC cabinets. Our streamlined production delivers in 2-4 weeks without compromising quality.
Discontinued Component Sourcing
Legacy PLC modules hard to find? We maintain inventory and global sourcing networks for Siemens S7-200/300/400 and other discontinued series.
Integration Compatibility Issues
Mixing PLC brands across your plant? We engineer cross-compatible cabinets that integrate seamlessly with your existing control infrastructure.
Customization Capabilities
Every PLC control cabinet we manufacture is fully customizable to meet your specific project requirements. Our engineering team works directly with your team to configure enclosure dimensions (standard and non-standard sizes), IP protection ratings, component brand preferences (Siemens, Allen-Bradley, Schneider, Mitsubishi), communication protocol selections, I/O module configurations, and special features such as ATEX/IECEx certification for hazardous areas, NEMA 4X enclosures for corrosive environments, or integrated climate control systems. We also accommodate custom color schemes, labeling standards, and documentation requirements.
Manufacturing Process
Our systematic approach ensures consistent quality and on-time delivery for every project.
Engineering Design
Our electrical engineers create detailed schematics using EPLAN P8 and AutoCAD Electrical, perform thermal load calculations, and develop PLC I/O lists based on your process requirements. All designs undergo peer review and client approval before proceeding to manufacturing.
Component Selection
We source components exclusively from authorized distributors — Siemens, Allen-Bradley, Schneider Electric, and ABB — ensuring genuine parts with full manufacturer warranty. Our strategic inventory of commonly specified components enables faster procurement and consistent availability.
Panel Assembly
Enclosures are precision-manufactured using CNC punching and bending equipment. Components are mounted on DIN rails with proper clearance per IEC 61439 standards. Cable glands, grounding systems, and wire ducts are installed to ensure organized cable management and optimal thermal performance.
PLC Programming
Our certified PLC programmers develop control logic, HMI interfaces, and communication configurations based on approved functional design specifications. All programs are simulated and tested offline using factory-approved software before deployment to ensure error-free operation.
Testing
Every PLC control cabinet undergoes comprehensive in-house testing including point-to-point wiring verification, insulation resistance testing (≥100MΩ), high-potential withstand testing, grounding continuity checks, and functional logic testing under simulated operating conditions.
Factory Acceptance Testing (FAT)
Clients are invited to witness FAT or review comprehensive test documentation. FAT includes full functional simulation, communication protocol verification (PROFINET, EtherNet/IP, Modbus), alarm testing, and redundancy switchover tests. All results are documented in detailed test reports with photographic evidence.
Global Delivery
Panels are packed per IEC 61439 transport requirements with shock indicators and moisture protection. We handle export documentation, customs clearance support, and coordinate logistics to project sites worldwide. On-site commissioning support and operator training are available at your facility.
Quality Control & Certifications
Quality is embedded in every stage of our manufacturing process. All PLC control cabinets are manufactured under our ISO 9001:2015 certified quality management system. Each panel undergoes comprehensive Factory Acceptance Testing (FAT) including functional logic verification, communication protocol testing, insulation resistance measurement (≥100MΩ), high-potential withstand testing, grounding continuity verification, and thermal imaging under load. Third-party inspection is available for UL 508A and CE certification audits. We maintain full traceability of all components with certificates of conformity provided for every shipment.
Project Cases
Selected projects showcasing our plc control cabinet capabilities across industries.
Municipal Water Treatment Plant Expansion
Delivered 12 PLC control cabinets with Siemens S7-1500 for a 200,000 m³/day water treatment facility. Integrated SCADA system with remote monitoring across 8 pump stations. Project completed on schedule with zero safety incidents.
View project details →Automotive Assembly Line Automation
Designed and commissioned 8 PLC control cabinets for a major automotive manufacturer, integrating 24 robotic cells with Siemens S7-1500 and PROFINET communication. Achieved 99.7% uptime during first year of operation.
View project details →Oil & Gas Pipeline SCADA System
Supplied 15 IP65-rated PLC control cabinets with redundant PLC configurations for a 500km pipeline monitoring system. Featured SIL 2 safety integration and satellite communication for remote sites.
View project details →Related Products & Services
Explore our complete range of industrial automation solutions designed to work together seamlessly.
VFD Control Panel
Variable frequency drive panels for motor speed control and energy savings.
View details →MCC Panels
Motor control centers for centralized power distribution and motor management.
View details →Building Automation
BMS/DDC control systems for HVAC, lighting, and facility management.
View details →Data Center Solutions
Infrastructure management for cooling, power, and environmental monitoring.
View details →Frequently Asked Questions
Straight answers on engineering, standards, FAT and export delivery.
What is included in a turnkey PLC control cabinet?
A turnkey SENTRADO cabinet includes the Siemens S7-1500 or S7-1200 CPU, power supplies and protection, ET 200SP remote I/O as required, control and isolation components, DIN-rail layout to IEC 60204-1, terminal blocks and field wiring terminals, cooling and lighting, and a documented bill of materials. We deliver the cabinet programmed, networked on PROFINET and fully FAT-tested, with drawings, source project backup and operation manuals.
Siemens S7-1500 vs S7-1200 — how do I choose?
The S7-1200 is a compact controller for machines and smaller skids with limited I/O and straightforward sequencing. The S7-1500 is selected for larger plant areas, high I/O counts, demanding motion or performance requirements, redundancy needs and tight integration with WinCC Unified. SENTRADO engineers recommend the platform against your I/O schedule and control narrative during the engineering phase.
Which communication protocols are supported?
Our standard architecture is PROFINET from S7-1500/S7-1200 controllers to ET 200SP remote stations, drives and HMI. For package equipment and third-party devices we integrate Modbus RTU and Modbus TCP through gateways or native ports. The SCADA layer — WinCC Unified — exposes OPC UA for connection to plant historians, MES or higher-level systems.
Do you provide PLC programming and SCADA configuration?
Yes. As a Siemens Certified System Integrator (Professional) we deliver PLC programming in TIA Portal and WinCC Unified SCADA configuration including alarm management, trend logging, batch or recipe handling and OPC UA connectivity. Electrical design, panel manufacturing, programming and FAT are delivered by one engineering team.
How is FAT done for international customers?
FAT is performed at our own panel manufacturing facility near Beijing, where the complete cabinet (and remote I/O panels where applicable) is powered, I/O is loop-tested and the application logic is run against simulated or real signals. Customers can witness FAT by traveling to China, via live remote video with screen and camera feeds, or by appointing SGS, Bureau Veritas or TÜV as an independent third-party witness.
What is the delivery lead time?
Export orders are typically shipment-ready in 11–14 weeks: 3–4 weeks for engineering and drawing approval, 6–8 weeks for cabinet manufacturing and assembly, and 1–2 weeks for FAT and rectification. Documentation approval milestones and third-party inspection dates are agreed in the project schedule.
Need Availability? Send Us Your Part Number.
Get pricing and delivery information within 24 hours. We source genuine components from authorized channels worldwide.