Construction And Function - Record DFA 127 User Manual

4

Construction and Function

4.1 Construction
1 2
Key to illustration:
1 Mains connection terminals
2 Fine-wire fuse
3 NET power supply
4 ATM drive unit
5 STG control unit
6 STG connection terminals
7 Motor print MOT
8 ATE drive unit terminals
4.2 Functions
The record DFA 127 has been designed to close without electrical power. It can be
easily opened by hand and closes using the energy stored in the spring, with the
motion damped by the motor acting as a generator.
If the door operator is connected to the mains power, the opening and closing
movements will be assisted by the motor.
The following functions are provided exclusively for the safety of the user:
Collision detection: If the door strikes an obstacle while opening, it stops imme-
diately and stores the position of the impact. During the time delay, the drive briefly
tries to reach the open position. Once the time delay has expired, the door closes,
and, when next opened, the door passes the impact position very carefully in slow
mode. This prevents a further violent impact.
Reversing: If the door strikes an obstacle when closing, it is reopened immedi-
ately.
Manual DFA 127 Full Power
3 4
13 12 14
12/2006 Rev. B
5
10
11
9 Slide switch S1 (rotation direction)
switch
10 Multifunctional switch MF on STG
11 Closing spring
12 Vision panel, adjust. spring tension
13 Adjusting screw for spring tension
14 Connectors for arms (both sides)
15 Standard switch BDI
16 Status signal and Reset button
6 7 15
9 8 16
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