Delta's EH series is a highly advanced PLC that has received widespread acclaim from customers since its market launch. This article will focus on introducing it, so please stay tuned.
Delta's EH series is an expandable, high-functionality PLC characterized by high speed, high performance, and broad application coverage. Building upon its existing analog input/output and temperature modules, Delta Electronics has launched several new high-performance special function modules this year, primarily targeting control applications requiring high-speed and precise processing. These include the 01PU single-axis positioning module, the 01HC 1CH high-speed counter module, and the 02HC 2CH high-speed counter module, significantly enriching the PLC's application capabilities and making it more adaptable to diverse needs in industrial control environments.
The DVP01PU positioning control module can be mainly used for speed or position control of stepper or servo drive systems. It has a maximum pulse output of 200 KHz and adopts a high-speed Line Driver interface or NPN open-collector output with high noise suppression.
Data within the module can be read and written using the program commands FROM/TO;
The module has eight stroke control modes, including origin return, inching motion, single-segment speed positioning motion, continuous two-segment speed positioning motion, variable speed motion, and hand crank (MPG) input, as well as two pulse acceleration curves, trapezoidal curve and S-curve.
The DVP01PU positioning control module is an easy-to-use standalone single-axis pulse positioning module suitable for various applications that can receive pulse control. Since the positioning control calculation is performed by dedicated hardware, it simplifies program writing and debugging, and can easily achieve precise motion positioning control of the workpiece. It is a more advanced application of PLC.
DVP01HC and DVP02HC are high-speed hardware counting modules with 1 and 2 channels, respectively. They can accept external 200kHz counting pulse signals, such as 1-phase or 2-phase encoder signals. These modules offer three counting modes: up and down counting (AB phase 2-phase input), forward/reverse pulse (1 phase 2-input), and counting pulse/direction (1 phase 1-input). The counting pulses can be processed at 1x, 2x, and 4x frequency. The voltage can be selected from common 5V, 12V, and 24V, meeting the requirements of most different types of sensors. Additionally, the modules provide an initial value setting command input (PRESET) and a counting disable command input (DISABLE) for convenient counting control.
The module output section has two independently isolated output points, YH0 and YH1. When the count value is equal to the set value, the corresponding output point will be turned on. Since the comparison and output setting are performed by hardware circuit, it does not occupy the host instruction loop time. Therefore, the output point can perform real-time processing of the comparison result. The data in the module can also be read and written by the instruction FROM/TO, which is very convenient and suitable for occasions with high-speed pulse counting.
All three modules utilize fixed terminal blocks and are mounted on DIN rails. They all feature an RS485 communication port compliant with the MODBUS protocol, making installation, wiring, and debugging extremely convenient. The panel is equipped with various application indicator lights, providing a clear overview of the module's operating status. As new members of the EH series, they complement existing functional modules, significantly expanding the application range of the EH model and enhancing its overall performance and competitiveness. They are widely applicable to various industries such as textile machinery, packaging machinery, and papermaking equipment, meeting the needs of diverse and demanding applications.
It is reported that Delta will soon launch multi-channel pulse output modules, Ethernet modules and other functional modules, making the Delta PLC family more diverse and its functions more complete.
