Installation Manual

18 en | Installation LECTUS select
2021-01 | 01 | F.01U.389.837
Installation manual
Bosch Security Systems B.V.
3.3 Assembly preparation
1. Lay the connection cables according to the local conditions and prepare them for
connection.
2. Remove the 8-pin screw / plug-in terminal from the reader module and connect the wires
according to this graphic:
65 874321
i
Notice!
The wiring must be carried out in a de-energized state. In other words, the operating voltage
may only be switched on after the reader has been fully installed!
Connection terminal ST1
(8 pin screw / plug terminal, voltage supply / interfaces)
PIN number Description
1 RS485 data “A”
2 RS485 data “B”
3 Do not connect
4 Do not connect
5 Do not connect
6 Do not connect
7 DC- (0V)
8 DC+ (from 8V to 30V)
Wire diameter
Stranded wire AWG 28 - 16
Solid wire AWG 28 - 16
Cable stripping length 6 to 7 mm