Moeller XControl XC600, Hardware, Engineering And Function Description, Page: 19 / 78

07/04 AWB2700-1428GB
Design
15
Power supply modules XC-POW50-UPS/
XC-POW50-XION-UPS
General
A base module and a power supply module form one unit. The
possible combination of both modules can be found in table 1. The
modules differ in their capability for expansion with signal
modules.
Task
The modules convert the 24 V DC power supply to +5 V DC,
+12 V DC and –12 V DC (for XC-POW50-XION-UPS) supplies, and
provide the voltages for the function modules via the PC/104+
bus. The XC-POW50-XION-UPS power supply module additionally
supplies the signal modules with a voltage of 5 V DC.
As the XC600 controller is PC-based, it must be ensured that the
program is closed and the operating system shut down properly
before the device is switched off. The supply to the power supply
module must therefore be backed up by means of an
uninterruptible power supply (UPS). If the supply voltage drops,
the UPS sends a “Power Fail” signal to the PLC which then
initiates a shutdown of the system. The UPS will then keep the
output voltage constant for at least two minutes in order to ensure
the trouble-free completion of the shutdown.
Layout
The module contains a board with the PC/104+ bus. Another
board provides the interface for the XI/ON modules and connects
the power supply module to the base module.
Project engineering
Figure 14 : Block diagram of the power supply module
* with XC-POW50-XION-UPS
Fieldbus
supply *
Power
Fail
24 V H
XC-POW50-XION-UPS
XC- ADP-XION
* *
24 V H
–12 V
+12 V
5 V
UPS
Diagnostics *
XI/ON
Module
bus
24 V H
XI/0N
ISA Interface
ISA-BUS
Power
Fail
Figure 15 : Connections for the XC-POW50-UPS/XC-POW50-XION-
UPS
a Power Fail connection
b 24 V DC connection
c Plug-in terminals, conductor cross-sections:
– stranded, with ferrules, 0.5 to 2.5 mm
2
– solid core 0.5 to 2.5 mm
2
Power F
ail
Power Supply
1 2
24Vo 0Vo
c
d
a
b