Siemens SIMATIC ET 200SP - Wiring Baseunits for I;O Modules

Wiring
6.7 Wiring BaseUnits for I/O modules
Distributed I/O system
System Manual, 09/2019, A5E03576849-AJ
101
6.7 Wiring BaseUnits for I/O modules
Introduction
The BaseUnits connect the ET 200SP distributed I/O system to the process. The following
versions of the BaseUnits can be used:
● BaseUnits (with light-colored terminal box) for opening a potential group: BU..D
● BaseUnits (with dark-colored terminal box) for extending the potential group: BU..B
● BaseUnits with additional AUX terminals or additional terminals: BU..+10..
● BaseUnits with integrated thermal resistor for compensation of the reference junction
temperature when connecting thermocouples: BU..T
● PotDis-BaseUnits (with light-colored terminal box) for opening a PotDis potential group:
PotDis-BU..D
● PotDis-BaseUnits (with dark-colored terminal box) for extending the potential group:
PotDis-BU..B
①
Push-in terminal
②
Spring release
③
Measuring probe (suitable probes: 1 mm diameter, length ≥ 10 mm while observing the
permitted voltage category)
④
Holder for shield connection
Figure 6-5 View of the BaseUnit
Note
The pin assignment of the BaseUnit depends on the connected I/O module. Information
on the BaseUnit
s and I/O modules can be found in the associated manuals.
Replacement of the terminal box on the BaseUnit is described in the section
Replacing
the terminal box on the BaseUnit
(Page 240).