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.
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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