Weidmuller PU-Overvoltage in Mains Control - Manual (Page 3)

4.1 Remote signalling by means of monitoring modules
Type PU x CR
As the signalling contact in the PuxCR is a change-over contact, connections are made to terminals
11/14 (normally open contact) and/or to terminals 11/12 (normally closed contact).
The terminals 11/12 are closed during normal operations (window green). At the same time, the
terminals 11/14 are opened (window red). In the case of a malfunctioning (window red) the terminals
11/14 are closed and the terminals 11/12 are opened.
The connection is carried out with stranded conductors (e.g. NYM), whereby parallel conductor routing of
supply lines and the earth conductor must be avoided. Replacing a suppressor circuit with a surge
suppressor reduces interference in and around the analysing unit.
4.2 Remote signalling by means of light barrier Type PU-O/S-E
Every PU-C is automatically suitable for telemonitoring purposes and can be retrofitted at any given
time. Mount the transmitter on the left, and the receiver on the right next to the PU blocks on the
top-hat rail and connect both devices to 230 V. Subsequently connect the remote signalling unit to
terminals 11 and 14 and/or 11 and 12, described in item 4.1. The system an now be used to
simultaneously monitor up to 40 overvoltage arresters.
Technical Data : PU x-CR PU O/S -E
Monitoring module Receiver/transmitter
with relay output
Max. permissible 250 V~, 24 V- 250 V~ Un 230 V~
switching voltage
Max. permissible 1 A, 2 A 250 mA I
N
40 mA
switching current
Signalling contact 1 Change-over contact
4.3 Overvoltage Protection with the 3+1 PU module
The PU3+1C 230/400V fulfils the requirements of the die VDE 0100, Part 531/A and the PU3+1C 385V
fulfils the requirement of the Ö-Norm 8001-§18.
Between the Phase L and the Neutral N are plugable Varistors and between the Neutral N and the Earth
PE is a plugable spark gap.
If the charge eliminator shows a red window as in 3., it must be replaced with a new one by trained
service personal.
4.4 Special Instruction for installation into metal Cabinets
To reach the clearance of the PU into metal cabinets these facts has to be done:
A plastic gap WTW part No 1058800000 or the WEW/2 part No. 106120 0000 has to be installed at the
side of the PU to the metal Cabinet.
If you use the PU x CR with the monitoring contact, you have to reduce the voltage of the monitoring
System to 48V.
Special for the PU with Uc: 550V, you have to put the plastic cover into the hole for the screwdriver after
installation. These plastic cover is packed in the box together with the PU for UC :550V
4.3 Approvals
PU x C for 230/400 V mains control according to ÖVE SN 60 part 4 and part 1.
All PU´s with Uc: 130V, 280V, 385V, 550V are approved by the IEC 61643-1 and marked with CE.
The PU´s with Uc : 130V, 280V, 550V are UL approved.
T2