Abbreviations Used; Installing The Control Unit; Electrical Connection - Becker S20 MLS Montage- Und Betriebsanleitung

Assembly and Operating Instructions
IMP – Impulse button
LS
– Light barrier
MLS – Mechanical Limit Switch
SKS
– Closing edge safety device
DW-Testing
– Pressure switch testing
EL
– Electric strip
OSE
– Optical safety device
NA
– Emergency stop
S20
Caution
The control unit may only be connected by a qualified electrician!
Observe the relevant VDE standards!
The equipment must always be securely disconnected from the mains
during all installation work!
When connecting, refer to the technical data of the S20 MLS. The
indicated maximum values must not be exceeded!
Installing the mains connection
The operating voltage of the S20 MLS door control unit is 3 x 400 V AC, 50/60 Hz (L1,
L2, L3, N, PE). For connection to the main power supply, install a 1.2 m long cable
with a CEE 16A/6h plug and a 16A/6h CEE socket with direct access to the control
unit to ensure that the plug is readily accessible. Alternatively, connect the control unit
via a non-detachable installation cable (refer to the position of the terminals and the
connecting diagram).
16

Abbreviations used

Installing the control unit

Open the cover of the control unit. Remove the keyboard
overlay plug from the control unit and carefully place the
cover to one side.
Remove the required cut-outs in the lower part of the housing.
Note
Cut the edges to size, so that the cut-outs can be
removed more easily.
Use the enclosed cardboard drilling template to drill the holes
for attaching the housing to the wall.

Electrical connection