2N Helios User Manual

Also see for Helios: User and service manual

Contents

2N Helios User Manual Manual pdf 30 page image

30Typical Backlight Power Supply2N® Helios features a high-quality white-LED name plate backlight. This backlightshows low power requirements, long life and even illumination of all name plates. If astandard 12 V electric lock (see above) is connected to 2N® Helios, the backlight canbe powered using the lock power supply. Connect the power supply as shown in thefigure. Just make sure that the power supply (adapter transformer) is able to supplythe required current constantly and that it is cooled properly (do not wrap it in anythermally insulating material, or use ill-ventilating covers, etc.!). The required currentdepends on the count of buttons and other elements in the set and can be determinedfor 12 V according to the following formula:Basic unit without keypad 80 mABasic unit with keypad 200 mA1 one-side extender unit 80 mA1 two-side extender unit 100 mACamera 130 mAReader 150 mADisplay 200 mAThe above mentioned currents are maximum values at 12V.Cable Arrangement inside the CoverWe recommend you to use a UTP cable (8-wire, approx. 5.5 mm output diameter) for2N® Helios connection. Push the cable into the groove on the left side of the cover.If you combine this cable with another one (e.g. the electric lock 2-wire cable), insertthe 2-wire first and then the UTP cable to prevent the 2-wire cable from falling out.You can also fit the cables with common clamp tape.Warning An improper cable arrangement may cause a malfunction of the product.Before closing the cover, check all wires and the cover for perfect closing.