Mounting and Installation
Page 16
RES-5008
Version 2
7.4
Line filter
In order to comply with the EMC directive, RESISTRON control loops must be operated with earthed line filters.
The earthed line filters serve to attenuate the effect of the phase-anglecontrol on the line and to protect the con-
troller against line disturbances.
CAUTION
The use of a suitable line filter is part of compliance with the standards and a prerequisite for CE
marking.
ROPEX line filters are specially optimized for use in RESISTRON control loops and guarantee compliance with
the EMC limit values when installed and wired correctly. The specification of the line filter can be found in the
ROPEX-application report created for your sealing application.
Further technical information:
Documentation
“
line filter
”
.
The supply of several control loops via a line filter is permitted if the total current does not exceed the maximum
current of the filter.
The instructions in the section 7.3 "Mains connection" on page 15 with regard to cabling must be complied with.
Example drawing for LF-06480:
7.5
Current transformer
The current transformer PEX-W4/-W5 appropriate for RESISTRON
®
Temperature Controller is part of the control
system. The current transformer may be operated only if it is correctly connected to the temperature controller
(
section 7.3 "Mains connection" on page 15).
If several heating elements are operated with one control circuit, the installation can be found in the ROPEX appli-
cation report. In special applications with RESISTRON
®
Temperature Controller it is necessary that a short circuit
between the heating element and earth/housing is detected and the control system is switched off immediately.
The MSW-2 monitoring current transformer can be used for this.
Further technical information can be found in the separate documentation for the current transformer and moni-
toring current transformer.
LINE
PE
Large cross-section
wire to ground
Large cross-section
wire to ground
Large frame contact surface
Do not lay parallel
Mounting plate (galvanized)
max. 1 m
ROPEX
temperature
controller
