Installation 43

should be as short as possible and connected to the grounding lug on the side of the case.

In order to comply with the requirements for Electromagnetic Compatibility as per EMC-Directive 89/336/EEC of the Council of European Community, this wiring practice is mandatory.

Although it is also possible to connect shields to the signal ground (terminal 2) this practice is not in accordance with EMC directives.

RC Networks for Interference Suppression

When driving highly inductive loads with the control relays, it is recommended that RC suppression networks (often called "Snubbers") are used for two reasons:

§To limit the amount of electrical noise caused by arcing across the relay contacts which may, in extreme cases, cause the microprocessor to act erratically.

§To protect the relay contacts against premature wear through pitting.

RC suppression networks consist of a capacitor and series resistor and are commonly available in the electrical industry. The values of R and C are dependant entirely on the load. However, if the user is unsure of the type of snubber to use, values of 0.25µF and 100 ohms will usually suffice. Note that only AC voltage approved RC suppression networks should be used.

The basic principle of operation is that the capacitor prevents a series of sparks from arcing across the contact as the contact breaks. The series resistor limits the current through the contact when the contact first makes

HP289

Page 50 Page 52
Page 51
Image 51
Epson 214D-1 user manual RC Networks for Interference Suppression
Page 50 Page 52

214D-1 specifications

The Epson 214D-1 is a powerful and compact printer designed for both personal and professional use, standing out in the crowded market of small-format printers. This sleek device leverages advanced printing technologies to deliver high-quality prints with remarkable efficiency and speed.

One of the hallmark features of the Epson 214D-1 is its use of PrecisionCore technology, which enables it to produce sharp, detailed images and crisp text. This technology utilizes a unique micro-electromechanical system (MEMS) for precision droplet control, resulting in prints that boast vibrant colors and enhanced clarity. The printer is capable of handling a variety of media types, including plain paper, photo paper, and even specialty media, making it a versatile tool for various printing needs.

The Epson 214D-1 also features a user-friendly interface, complete with an intuitive control panel that simplifies operation. The printer supports wireless connectivity options, allowing users to print directly from their smartphones and tablets via Wi-Fi Direct or through mobile printing apps. This flexibility makes it easy to print documents and photos on the go, enhancing productivity for both home users and professionals alike.

With a compact design, the 214D-1 can fit easily into small home offices or workspaces, optimizing space without sacrificing performance. The printer also boasts a fast printing speed of up to 15 pages per minute for black-and-white documents and approximately 8 pages per minute for color prints, ensuring that users can keep pace with demanding workflows.

In terms of sustainability, the Epson 214D-1 is designed to be energy efficient, consuming less power during operation and standby modes. Additionally, it supports high-capacity ink cartridges that provide a lower cost-per-page, reducing the frequency of cartridge replacements and minimizing environmental impact.

Overall, the Epson 214D-1 stands as a reliable option for any individual or business looking for a compact, high-performance printer that excels in both quality and efficiency. With its innovative features and technologies, it is well-suited to meet a range of printing requirements while delivering exceptional results each time.
Top Page Image Contents