General information
RES-5010 Page 3 of 49
1 General information
This RESISTRON temperature controller is manufac-
tured according to DIN EN 61010-1. In the course of its
manufacture it passed through quality assurance,
whereby it was subjected to extensive inspections and
tests. As a result of this, the product left our factory in
perfect condition.
The recommendations and warning notes contained in
these operating instructions must be complied with, in
order to guarantee safe operation.
The device can be operated within the limits indicated
in the "Technical Data" without impairing its operational
safety. Installation and maintenance may only be
performed by technically trained, skilled persons who
are familiar with the associated risks and warranty
provisions.
1.1 Intended use
RESISTRON temperature controllers may only be used
for heating and temperature control of heatsealing
bands which are expressly approved for them, and
providing the regulations, notes and warnings
contained in these instructions are observed.
In case of non-observance or use contrary to the
intended purpose, there is a risk that safety will be
impaired or that the heatsealing band, electrical wiring,
transformer etc. will overheat. This is the personal
responsibility of the user.
1.2 Heatsealing band
The use of suitable heatsealing bands is a basic
prerequisite for reliable and safe operation of the
system.
The resistance of the heatsealing band which is used
must have a positive minimum temperature coefficient
in order to guarantee trouble-free operation of the
RESISTRON temperature controller.
The temperature coefficient must be specified as
follows:
e.g. Alloy-20: TCR = 1100 ppm/K
NOREX: TCR = 3500 ppm/K
The RESISTRON temperature controller must be set
and coded according to the temperature coefficient of
the heatsealing band.
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 clealy identified
by means of suitable markings as well as the connector
geometry, length, or other means to ensure that
replacement bands are identical.
1.3 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
VDE 0570 / 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.
1.4 Current transformer PEX-W2/-W3/-
W4
The current transformer supplied with the RESISTRON
temperature controller is an integral part of the control
system.
Only the original ROPEX PEX-W2, PEX-W3 or PEX-
W4 current transformer may be used. Other trans-
formers 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.
