TR-Electronic CD-75 Series - Supply Voltage, X1

Installation / Preparation for Commissioning
 TR-Electronic GmbH 2009, All Rights Reserved Printed in the Federal Republic of Germany
Page 88 of 108 TR - ECE - BA - DGB - 0070 - 17 12/13/2018
5.3.1 Supply voltage, X1
Danger of unnoticed damage to the internal electronics, due to
unacceptable overvoltages!
•
If an overvoltage of >36 V DC is inadvertently applied, the measuring
system must be checked in the factory.
 The measuring system must be shut down immediately
 When sending the measuring system to the
factory, the reasons and
circumstances relating to the overvoltage must be specified

The power supply used must meet the requirements of SELV/PELV
(IEC 60364-4-41:2005)
Danger of damage to subsequent electronics due to overvoltages caused
by a missing ground reference point!
•
If the ground reference point is completely missing, e.g. 0 V of the power
supply not connected, voltages equal to the supply voltage can occur at
the outputs of the interfaces.
 It must be guaranteed that a ground reference point
is present at all
times.
 It is recommended to connect two separate ground wires at the pins
3 and 4
PIN
Signal
Description
Comment
1
+ 24 V DC (11…28 V DC)
Supply voltage
PIN 1/2 connected
2
+ 24 V DC (11…28 V DC)
Supply voltage
3
0 V
GND
PIN 3/4 connected
4
0 V
GND
Master system and Safety system have a common voltage terminal connection, but
the systems are internally electrically separated from each other over two separate
power supplies.
Cable specification: min. 0.5 mm
2
, stranded in pairs and shielded