Checking The Mechanical Functions; Control Unit Stg 127 - Record DFA127 Instructions Manual

11.5

Checking the mechanical functions

▪ Are the arms fixed at the correct angle to the door leaf?
▪ When moved by hand, does the door leaf move easily over its full swing?
▪ Does the operator damp the opening by spring force? If not, the slide switch position S1
on the motor print MOT must be changed.
▪ Does the DFA work as mechanical door closer?
▪ With slide arms: Acceleration before definite closing visible.
11.6

Control unit STG 127

The control unit works with an active HIGH level. To activate the function, +24V must be
present. Safety inputs will be activated by an interruption. The basic signal 0V is connected
to the protective earth. This connection can be interrupted for test reasons by use of the
„ground screw", located next to terminal 1.
102-127108955
WARNING
Unexpected slamming of the door
• Contusions, bruises or cutting off of extremities through door leaves
 Check position of slide switch. If the door closes, the mouvement has to be
attenuated. The door should not slam shut.
NOTICE
The STM 127 control module has been tested according ISO standard 13849-
1:2006, category 2 PL c.
Installation DFA 127
The switch position is set according to the direc-
tion of rotation of the arm while opening.
If, for example, the standard arm moves away to
the right when opening, the slide switch must be
set to the right.
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