Programmable Logic Controller – Features

One of the obvious new features is how compact in size PLCs are becoming. PLCs are now about the size of a hockey puck, 4″ H, 4″ W and 2.5″ D. These compact PLCs come with a built in LCD display and keypad or a colour touch screen (160×128 pixels). These models also come with …

Read more

PLC’s – Analog Values

Many homes and offices require more than simple on/off control. They must deal with temperature, gas/water meters, and sump levels, which vary in a continuous manner from some minimum to some maximum reading. Various sensors are used to measure the quantity and convert it to a voltage or current value. The voltage or current signal …

Read more

When Do You Need A PLC?

When do you need a programmable logic controller? – when there are more than four rooms with more that three zones of lighting. – when the number of switches per room are more than two. – when energy consumption is a concern. – when turning lights on or off automatically is required. – when an …

Read more

PLC – Lighting Design

Architects or interior designers will provide a reverse ceiling plan showing where the lights should be located on a project. Symbols for lights are typically circles. Sometimes wall/floor receptacles are included, if lamps will be used in the room. Group the lights by room and create a scope of work. If motorized drapery is involved, …

Read more

PLC – Memory Backup

User data memory, user program memory and system configuration memory on a Programmable Logic Controller (PLC) can be backed up in any of four different ways: * battery capacitor * lithium battery * flash memory * memory cards Yamaha Receivers If a battery capacitor assembly is used, it automatically backs up the current memory values …

Read more

PLC – Web Server

HyperText Transfer Protocol (HTTP) is a standard Client/Server Internet protocol that transfers web content over a TCP/IP network. The Programmable Logic Controller (PLC) with an Ethernet module acts as an HTTP Server (web content provider), which responds to requests from HTTP Clients (web browsers). The PLC supports HTTP Client authentication, requiring the web browser to …

Read more

PLC – Date/Time Schedule

The programmable logic controller (PLC) is an all-in-one control solution for residential applications. The PLC gives the homeowner that additional level of control over his home electrical requirements. One level of control the PLC offers is a Date/Time schedule feature. What the Date/Time schedule feature allows the homeowner to do is have various electrical devices, …

Read more

PLC – Bang & Olufsen Remote

The programmable logic controller (PLC) interfaces with any electrical device. In a home, these devices are typically lights, motorized blinds, fireplaces, and even audio/video systems. Bang & Olufsen (B&O) is a company who offers a wide range of very high-end audio/video systems. These systems are controlled by a handheld remote control called a Beo4. This …

Read more

PLC – Touchpanels

A touchpanel is a video screen with software buttons that allows a homeowner to control audio, video, lights, drapes, and any other electrical appliance in a home. The touchpanel does not control devices directly, but when connected to a programmable logic controller (PLC), gives the homeowner more control than a typical keypad. A keypad will …

Read more

PLC Installation

There are many things to consider when installing a programmable logic controller (PLC). First, the PLC will require a proper enclosure and output loads, such as room lights, should have their own relay panel. The relay panel is installed above or below the PLC enclosure depending on the output wiring of the PLC. Mount the …

Read more