Delta DVP and AS PLC spares

Delta Electronics has established a strong presence in the South African automation market through its cost-effective DVP series PLCs, which are widely used by machine builders and OEMs who need reliable control without the premium pricing of European or American brands. The DVP family covers the range from the compact SS2 series for small machines through the capable ES2, EX2, SX2 and EH3 controllers to the motion-oriented SV2. Each model is available in multiple output configurations indicated by suffix letters, typically R for relay outputs and T for transistor outputs, and matching the suffix correctly is essential when ordering a replacement controller.

The AS series represents Delta's higher-performance option, offering faster processing, greater memory capacity and enhanced communication features for applications that have outgrown the DVP range. Both families are programmed using ISPSoft, Delta's integrated programming environment that supports ladder logic, structured text and function block diagramming. The AS series also supports a wider range of communication protocols, making it suitable for distributed I/O architectures and integration with Delta's own VFD drives over Modbus, a combination that is extremely common in South African machinery.

The DOP series HMI panels from Delta provide operator interface capabilities that pair naturally with DVP and AS controllers, offering touch-screen functionality at a competitive price point. The widespread use of Delta equipment in locally manufactured machinery means that familiarity with DVP programming and troubleshooting is well established among South African automation technicians. For maintenance teams, the most common failure points on DVP systems are the power supply terminals and the output devices themselves, particularly relay outputs that switch high inrush loads, so keeping a spare controller and a couple of I/O modules on the shelf is a practical strategy.