Compared with traditional control cabinets, PLC control box has higher flexibility, intelligence and reliability.
As the core equipment of industrial automation and intelligent control, PLC (Programmable Logic Controller) control cabinet plays a key role in modernization construction. Compared with traditional control cabinets, PLC control box has higher flexibility, intelligence and reliability, and is suitable for intelligent manufacturing, smart city, green energy and other fields. The price of low-voltage electrical boxes and cabinets is affected by many factors:
1. Material Costs
1) PLC Electrical Control Cabinet
Processor module: The cost of a single CPU of a high-end PLC brand (such as Siemens S7-1500) can be up to 50 times that of an ordinary contactor
Communication hardware: PROFINET/Ethernet modules are 3-5 times more expensive than traditional hard wiring
Shielded cable: Twisted pair shielded cable is required to resist electromagnetic interference (cost +30%)
2) Ordinary Electrical Cabinet
Only a basic circuit breaker + contactor combination is required
2. Design Complexity
1) PLC Electrical Control Cabinet
Software licensing fee: The annual fee for programming software such as TIA Portal can reach 10,000 yuan
EMC design: Must comply with the IEC 61326 electromagnetic compatibility standard (increase the cost of the filter circuit)
Cooling system: Electronic components need to be equipped with dedicated air ducts (15% space more than ordinary cabinets)
2) Ordinary Electrical Cabinet
Mechanical components do not need to consider programming compatibility
3. PLC Electrical Control Cabinet Manufacturing Process
Follow IEC 60204-1 line number tube/OT terminal specification (manual time consumption + 40%)
72 hours of aging test is required (ordinary cabinets only need 8 hours)
PLC function test accounts for 60% of the cost in CE/UL certification
4. Intelligent Premium Brought by The Unique Functions of PLC Electric Control Cabinet
- Predictive Maintenance
vibration/temperature sensor
- Energy Management
power quality analysis
- Remote Operation and Maintenance
4G/5G module integration
5. Service life
The price is higher than that of ordinary electrical cabinets (the cost of core components can be up to 50 times that of ordinary contactors), but the service life is longer (up to 10-15 years), and the long-term investment cost is lower.
