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DC Battery Operated Stair Lift Control

KB Electronics, Inc. Manufacturer of AC Drives, DC Drives & Variable Speed Controls

Application:  DC Battery Operated Stair Lift Control

Elderly or wheelchair-bound individuals use stair lift equipment to move up and down a flight of stairs. Ease of operation and reliability are important features of this product.

A motor and drive control the speed of the chair lift and enable it to stop and start in a smooth manner. The application requires a battery powered DC to DC drive that can be remote controlled and is capable of charging and maintaining the battery.

KB Solution:

The choice for this application is a newly designed control, the KBSL. KB’s engineers worked with the customer to develop the exact drive needed for this application.

Custom software and hardware inputs allow the customer to determine power up features, up/down logic and limit switches to control movement.

Customization includes being able to operate the lift from the chair controls or a handheld infrared remote control. An on board buzzer is programmed to notify the user at the start of operation and when the battery voltage is low. The customized battery charger operation maintains a constant voltage of 28.8 volts.

Adjustments include customer settable jumpers to allow selection of features including preset speeds and start up delays. Additional jumper adjustments allow the customer to select the remote channel ID and activate the brake function which contains short circuit protection.

Automatic Chip Conveyor

KB Electronics, Inc.

Application: Automatic Chip Conveyor

Conveyors that transport metal chips from machining centers are generally plagued with jam up problems. The chips accumulate to the point of system overload and eventually shut down the conveyor. The conveyors are fitted with manual controls for an operator to sequence the scrap material away from the machine. Lost production time results since the operator must now clear the jam and restart the system.

KB solution:

The choice for this application was a KBDA digital drive housed in a rugged die-cast NEMA-4X (IP-65) aluminum enclosure. The engineers at KB were able to develop custom software that senses a system overload prior to a jam up. A series of anti-jam sequences are performed very rapidly which clear the jam and allow the process to continue.

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