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HDA 5500
1 Introduction
The individual components and the final assembly of the Digital Display Unit HDA 5500 are
subject to strict quality controls. Each HDA 5500 is individually calibrated and subjected to a
final test. In this way we can guarantee that the unit is fault-free on despatch and conforms to
the given specifications. However, if there is a cause for complaint, please return the unit to
us outlining the fault.
The HDA 5500 digital display unit is maintenance-free and operates perfectly when used
according to the specifications. If faults do nonetheless arise, please contact HYDAC Ser-
vice. Incorrect installation or interference by anybody other than HYDAC personnel will
invalidate all warranty claims.
1.1 European standards compatibility
The HDA 5500 digital display unit carries the
approval requirements currently applicable in Germany and to the European standards for
operating these units. The applicable directives on electromagnetic compatibility and the
safety regulations according to the low voltage directive are therefore guaranteed.
This product complies with the regulations of the following European Directive:
EN 61000–6–1 / 2 / 3 / 4
We reserve the right to make technical modifications.
2 Safety instructions
The HDA 5500 digital display unit presents no safety concerns when installed and operated
in accordance with this user manual. However, in order to avoid any risk to the operator or
any damage due to incorrect handling of the unit, please adhere strictly to the following
safety instructions:
• The HDA 5500 must not be put into service if any known defects, either electrical or
mechanical, are apparent.
• The unit must be installed exactly according to the instructions.
• Read the information on the type code label.
• Fault investigation and repairs must only be carried out by HYDAC Service.
• All relevant and generally recognised safety requirements must be adhered to.
3 Functions
Depending on the model, the following functions are available:
• Digital display of analogue signals
• Temperature measurement (by means of external Pt100 temperature sensor)
• Frequency measurement
• Display of a unit, e. g. bar, psi, MPa, kg/cm²,
• Display of a lowest or peak value (slave pointer function)
• Display of a pre-set switch point
• Display of differential value and switching on differential value
• Counter function
• Switching outputs via relay switching contacts
• Analogue output 4..20 mA or 0..10 V can be selected
• Basic settings menu for adapting the HDA 5500 to a particular measuring task
• Programming enable functions can be disabled to prevent subsequent unauthorised
adjustment of the settings
• RS 232 serial interface
- mark and therefore corresponds to the
o
o
C,
F, l/min (and others)
User Manual
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