Device functions
Version 1
RES-5009
Page 55
9.17
Measures in the event of an error
System incorrectly dimensioned:
The control can function properly only if all components are coordinated with one another. The ROPEX application
report fulfils exactly this task and should therefore be implemented in full.
If the system is not designed according to the ROPEX application report, or if the boundary conditions change,
this can lead to poor control or even faults.
If your application changes, e. g. by increasing the cycle rate or changing the heating band dimensions, the appli-
cation report must be adjusted accordingly. Inform us (
) and we will check what changes have to
be made to your system so that the control can work again accurately.
Check configuration:
In some cases the controller has to be operated outside of the technical specification. If this is the case, the rele-
vant information is given in the ROPEX application report. The adjustments in the control circuit, e. g. by additional
system components, or a modification to the controller, is described there. The necessary system components are
also listed in the parts list.
Failure to comply with these instructions can lead to operational faults.
Loose contact:
The most common cause for errors is a loose contact. A loose contact can have several causes and occurs during
operation. Before initiating a thorough search for a loose contact, you should first check all connections for a good
and tight fit. Among others, weak points can be plugs and very often clamping heads, screw connections and cable
lugs.
Requirements for looking for loose contacts:
• We recommend having an electrician to troubleshoot the machine and an employee to operate the machine.
• A continuous Start signal on the temperature controller must be possible, in order to be able to carry out con-
tinuous heating.
• It must be ensured that no dangerous movements can take place in the machine during the test, for example,
by pressing the emergency stop.
Additional information:
• In case of parallel connections of heating elements, both current circuits must be routed through the current
transformer, so that a loose contact can be detected.
• The calibration process (AUTOCAL) must be carried out after changes to the system (cabling, connectors,
tightening of screws, ...).
In the following it is described how you can locate a loose contact in your system:
1. Reset the alarm (e. g. press RESET).
2. Generate a continuous Start signal on the controller at a temperature of 75 °C (corresponds to 2.5 V at the ana-
logue output). Make sure that the heating does not lead to a dangerous situation in the machine.
3. The operator of the machine observes the displayed or measured temperature.
4. In the meantime, the electrician checks and moves the lines (high-current lines, measuring lines, ...). All plugs
and contact blocks must also be checked by tapping them.
5. As soon as the displayed or measured temperature changes suddenly, the cause for the loose contact will be
Internal device error/no line
voltage
- Hardware error (replace controller)
- Slide switch for alarm relay defective or not in correct posi-
tion
- Line voltage missing
Error
range
Explanations
Possible causes
Summary of Contents for RESISTRON RES-5009
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