Door operators fall into two categories: Power-Operated Pedestrian Doors and Low-Energy Power Operated Doors. Power-Operated Pedestrian Doors may be swinging, folded or sliding, and are used for high traffic applications. Low-Energy Power Operated Doors are either swinging or folded, and they are...
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Door operators fall into two categories: Power-Operated Pedestrian Doors and Low-Energy Power Operated Doors. Power-Operated Pedestrian Doors may be swinging, folded or sliding, and are used for high traffic applications. Low-Energy Power Operated Doors are either swinging or folded, and they are used for lower traffic doors.
Each of these systems must comply with a different ANSI Standard, 156.10 for power operated, and 156.19 for low power units. Low-energy power operated door operators designed to comply with ANSI156-19 have integral safety features which makes installing and equipping these systems a far simpler process than for a power-operated door. While the majority of power-operated systems are new installs, providing low energy power operated door operators as a retrofit onto existing swinging doors is a popular upgrade and suitable for a wide variety of applications.
DORMA's ED800 low energy operator combines a powered door closer with microprocessor control to render an ADA-compliant device that either assists with the opening of a for the physically challenged or opens a door automatically.
The ED800 can be field adjusted into one of two modes: low energy or power assist. In low energy mode, the activated unit cycles the door open according to four user adjustments -- delay time, opening angle, opening time/force and door width. In the power assist mode, the ED 800 supplies powered assistance to manual operation, adjustable between 1/2lbf. and 5 lbf.
The ED800 may be activated with a wall switch, motion sensor, access control keypad, card reader or wireless transmitters to actuate opening the door.
When turned on, The standard push-and-go feature automatically activates the operator when a person begins to open the door manually. When not being activated for door opening, the ED800 acts like a conventional door closer.
To simplify set up, an on-board microprocessor completes a learning cycle upon the first application of power. During normal operation, the ED 800 electronically senses the door environment and adjusts opening and closing forces accordingly.
As an added safety measure, the ED 800 stops operation and enters a balanced state when it encounters an obstacle in the opening or closing cycle. An assist function is automatically engaged to make it easier to push the door out of the way.
Although not required by ANSI 156.19, external safety sensors may be used with the ED800 to prevent the operator from triggering or re-closing if the path of the door is obstructed.
The ED800 can also be integrated with electrically actuated locking devices such as electric strikes, electromagnetic locks and electrically retracted panic exit door hardware.
The ED 800 is supplied with an integral delayed actuation and door lock output which coordinates an input signal so that the electrical locking device is released prior to the triggering of the ED 800 opening sequence.
ED 800 is a solution for many applications where existing swinging doors would benefit from the safety and convenience of automatic opening. The ED 800 has integral overload protection in case the unit is asked to operate in inappropriate conditions, such as on an improperly adjusted door, a door subjected to high wind for extended periods, or an obstructed door.
The ED 800 is almost self-healing, in that its internal microprocessor not only monitors resistance to opening or closing which might be caused by a pedestrian obstructing the opening, but it also re-analyses the situation; recalibrates itself, and restores itself to proper operating mode.
Installation options allow the ED 800 to be installed on either the push or pull side of the door. It may be connected to line voltage either with a line cord, or permanently hard-wired. The ED 800 may be ordered with a custom full length housing for installation on pairs of doors; and the system may be further modified so that local power and hold-open controls usually supplied on the end cap of the operator can be remotely situated to prevent unauthorized access to these controls.
With extra effort and training, locksmiths can become accessibility and security experts.
To ensure the minimum opening and closing force required and to eliminate back-drive, the MPOWER 3000 drive train and motor does not activate when the door is opened manually.