Control System
LQHCT Control System for Heat Cycle Testing
Industrial-grade automation system for precise control of cable heat cycle tests, integrating Siemens S7-300 PLC and WinCC software with 4000A continuous current capacity.
System Architecture
Core Components
Siemens/ABB industrial components
Philips 19" LCD control interface
Advantech industrial computer
Optical fiber communication
Protection Systems
Overvoltage/lightning protection
Acousto-optic alarm system
Emergency shutdown circuits
Isolated power filtration
Technical Specifications
| Parameter | Specification |
|---|---|
| Current Range | 0-4000A (1A resolution) |
| Voltage Range | 0-90V (0.05V resolution) |
| Timing Accuracy | 1s-9999s (1s increment) |
| Measurement Uncertainty | <3% overall |
| Control Modes | Manual/Auto with curve programming |
Control Features
Precision Regulation
Voltage ramp rate control
Current tracking to programmed curves
Auto-return to zero position
Safety Interlocks
Door-open circuit prevention
Regulator position verification
Emergency stop cascade
Hardware Configuration
Controller: Siemens S7-300 PLC
HMI: WinCC on Advantech P4 2.4GHz
I/O Capacity: 8AI/4AO (12-bit resolution)
Enclosure: PS cabinet 800×800×2260mm (RAL7035)
Measurement System
| Measurement Point | Accuracy |
|---|---|
| Primary Voltage | 0.5 class |
| Primary Current | 0.5 class |
| Secondary Voltage | 0.5 class |
| Winding Temperature | 0.5 class |
Operation Modes
Automatic Control
Programmable current-voltage profiles
Auto step-up/down with speed control
Scheduled test sequences
Manual Control
Direct regulator adjustment
Override capabilities
Step-by-step operation
Standards Compliance
IEC 60840/62067 cable test requirements
EN 61010-1 safety standards
EMC Directive 2014/30/EU
Custom configurations available for specific cable testing protocols - contact our automation engineers for system integration services.
