Application; Utilization; Functions - Siemens SIPLUS PSU Operating Instructions Manual

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2 Application

2.1 Utilization

SIPLUS PSU is a power supply module in electronic cabinets for the feeding and sub-distribution of
the power supply DC 24 V. It was developed especially for use in instrumentation and control cabi-
nets of the Siemens power station instrumentation and control systems SPPA-T2000 and SPPA-
T3000 and the Siemens automation system PCS7. It serves for the protected power supply of cabinet
components like racks, fans, heat exchangers, thermostats, door contacts and cabinet lamps.
Figure 1: SIPLUS PSU
The SIPLUS PSU was designed for the installation into electronic cabinets with 19 inch modular de-
sign. By turning the lateral mounting angles by 180° backwards it can also be screwed to rear as-
sembly walls without problems (see Chapter 7 "Commissioning").

2.2 Functions

The SIPLUS PSU integrates the following functions in a compact unit:
Redundant cabinet feeding power supply DC 24V
Separate branch terminals DC 24V for the power supply of an adjacent cabinet
20 supply outputs for sub-distribution of the DC 24 V supply within the instrumentation and
control cabinet
Fuse Protection of the cabinet sub-distribution
Manual switch-off of every single electrical circuit of the cabinet sub-distribution
Monitoring and signaling of a blown fuse or detection of a failure
Indication of the operating state of all power supply outputs (X1-20) via LED displays
Electrical connection of the ground potential M of the cabinet feeding with cabinet ground
Disconnection of the earth connection for plants with central earth connection point
Flexible installation by lateral assembly brackets with several fixing options
Test of the feeder diodes with power supply in operating state
SIPLUS PSU Power Supply Unit
Copyright (C) Siemens AG 2018
A5E00854207E
V 8.00 released
SIPLUS PSU (6DL3500-8BA)
7 of 30
2018-05-03

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