General information
Page 4
RES-5007
Version 1
The temperature coefficient must be taken from the ROPEX application report and must be set accordingly.
The use of incorrect alloys with a too low temperature coefficient and incorrect coding of the
RESISTRON
®
temperature controller leads to uncontrolled heating of the heatsealing band, which
will ultimately burn out!
The original heatsealing bands must be clearly identified by means of suitable markings as well as the connector
geometry, length, or other means to ensure that replacement bands are identical.
2.4
Impulse transformer
A suitable impulse transformer is necessary in order to guarantee trouble-free operation of the control loop. This
transformer must be designed according to EN 61558 (isolating transformer with reinforced insulation) and have
a one section bobbin. When the impulse transformer is installed, suitable touch protection must be provided in
accordance with the national installation regulations for electrical equipment. In addition to this, water, cleaning
solutions and conductive fluids must be prevented from seeping into the transformer.
Incorrect installation of the impulse transformer impairs electrical safety.
2.5
Current transformer PEX-W4/-W5
The current transformer supplied with the RESISTRON
®
temperature controller is an integral part of the control
system.
Only the original ROPEX PEX-W4 or PEX-W5 current transformer may be used. Other transformers may cause
the equipment to malfunction.
The current transformer may only be operated if it is correctly connected to the RESISTRON
®
temperature
controller (see section "Startup and operation"). The relevant safety instructions contained in section "Power
supply", must be observed. External monitoring modules can be used in order to additionally increase operating
safety. They are not included in the scope of supply of the standard control system and are described in a separate
document.
2.6
Line filter
ROPEX provides line filters in different power classes. The ROPEX application report lists the suitable line filter
which can be ordered accordingly.
The use of an original ROPEX line filter is mandatory in order to comply with the standards and provisions
mentioned in section 2.7 "Standards / CE marking" on page 4. This device must be installed and connected
according to the instructions contained in section "Power supply" as well as the separate documentation enclosed
with the line filter.
2.7
Standards / CE marking
The controller described here complies with the following standards, provisions and directives:
DIN EN 61010-1:2001 (2014/35/EU)
Safety requirements for electrical equipment for meas-
urement, control and laboratory use (low-voltage direc-
tive):
pollution degree 2, protection class I, measurement
category I (for U
R
and I
R
terminals)
!
