SIMATIC PCS 7 cabinet design 6/2 6/2 Introduction Overview 6/3 6/4 6/5 Basic cabinet ET 200M I/O unit System unit Siemens PLT 112 · 2002 6/1
SIMATIC PCS 7 cabinet design Introduction Cabinet packaging system SIMATIC PCS 7 cabinet design Modular design System-specific modules • AS 488/TM system unit • ET 200M I/O unit (ET 200U/ET 200B on request) System-neutral modules • Basic cabinet, consisting of framework, door, outer walls, internal mechanical parts and power supply assembly with: - Compartment for documents - Trim - AC 230 V socket - AC 230 V or DC 24 V cabinet illumination - I & C monitoring via automation system or cabinet lamp Options
SIMATIC PCS 7 cabinet design Basic cabinet Electrical design Each delivered cabinet contains: • Power supply assembly AC 230 V or DC 24 V • Cable clamps and screen bars for I/O and bus cables • Prewiring of power supply cables for central and I/O units • Wiring of PROFIBUS-DP fieldbus • Connector board for cabinet earth Options for the electrical design • AC 230 V socket (installed in power supply assembly) • I & C monitoring (2 versions): - I & C monitoring via cabinet lamp.
SIMATIC PCS 7 cabinet design ET 200M I/O unit Hot swapping When ordering an ET 200M I/O station, it is additionally possible to order the hot swapping function. In an I & C system, it may be necessary to replace modules during operation for reasons of increased availability. The I/O subsystem for hot swapping is available for this as a version of the ET 200M. This version permits replacement of modules without having to switch off the associated ET 200M subsystem.
SIMATIC PCS 7 cabinet design AS 488/TM system unit • DC 24 V or AC 120/230 V power supply: depending on the input voltage, the AS 488/TM can be equipped either with a PS 407 power supply module (AC 120/230 V supply) or a PS 405 power supply module (DC 24 V supply), each rated at 10 A. These supply the AS 488/TM modules with the DC 5 V and DC 24 V operating voltages via the backplane bus. The PS 405 and PS 407 power supply modules also contain the backup batteries for buffering the time and date.
SIMATIC PCS 7 cabinet design 6/6 Siemens PLT 112 · 2002
