Basically, the answer to the above question is simple. When conventional electrical switching fails to deliver today’s and future control requirements.

When Do You Need A PLC?

Eugene Kowch | P.I.D. Consultants Inc.

Programmable Logic Controller
---- When Do You Need A PLC? ----

By Eugene Kowch, P.I.D. Consultants Inc.

Basically, the answer to the above question is simple. When conventional electrical switching fails to deliver today's and future control requirements.


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 overide switch is needed on security lights.

-          when switching outdoor lighting from the basement is not acceptable.

-          when a motion sensor and a manual switch is required on the same light.

-          when an all on/off control for lights is nice to have.

-          when the fireplace switch is part of the lighting keypad.

-          when motorized drapery operates on a timetable.

-          when audio volume control knob does not look nice.

-          when lighting scene control is a great feature.

-          when outdoor heaters require a time off control.

-          when hot tub/pool temperature is a concern.

-          when landscape lighting is on at sunset and off at sunrise.

-          when operating electrical devices from a handheld remote control.

-          when control from the Internet via a web site is cool.

-          when programming is made simple and easy.

-          when turning on/off a fountain from inside the house.

-          when on vacation, have the house lighting go on/off to give a lived in look.

-          when outdoor lights blink off and on when the security is in alarm.

-          when hallway lights go on automatically in the evening.

-          when motorized windows need to open/close from lighting keypads.

-          when colour touchscreens are needed for whole house control.

-          when telephone interface from anywhere in the world.

-          when an outside door opens, a light goes on automatically.

-          when garage lights go on when the garage door opens and off when it closes.

-          when a distributed control system is desired over a central control system.

-          when opening a driveway gate manually from inside the home.

-          when conventional three way switching drives you crazy.

-          when electrical devices go on/off in a sequence.

-          when exhaust fans need another switch on the wall.

-          when a photocell and manual control is needed on the same device.

-          when thermostats add to the clutter of switches on a wall.

-          when having to go outside to plug in xmas lights is a chore.

-          when preparing for future voice control.

Basically, the answer to the above question is simple. When conventional electrical switching fails to deliver today's and future control requirements.

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