Installation
Version 1
RES-401
Page 11
5.4
Line filter
To comply with EMC directives – corresponding to EN 50081-1 and EN 50082-2 – RESISTRON control loops
must be operated with line filters.
These filters damp the reaction of the phase-angle control on the line and protect the controller against line distur-
bances.
The use of a suitable line filter is part of the standards conformity and a prerequisite of the CE mark.
ROPEX line filters are specially optimized for use in RESISTRON control loops. Providing that they are installed
and wired correctly, they guarantee compliance with the EMC limit values.
You can find the exact specification of the line filter in the ROPEX Application Report calculated for your particular
heatsealing application.
For more technical information:
"Line filter" documentation.
It is permissible to supply several RESISTRON control loops with a single line filter, providing the total current does
not exceed the maximum current of the filter.
The wiring instructions contained in section 5.3 "Power supply" on page 10 must be observed.
Example drawing for LF-06480:
5.5
Current transformer PEX-W4/-W5
The PEX-W4/-W5 current transformer supplied with the RESISTRON
®
temperature controller is an integral part
of the control system. The current transformer may only be operated if it is connected to the temperature controller
correctly (
section 5.3 "Power supply" on page 10).
!
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
