Dräger REGARD 7000 Instructions For Use Manual page 21

As an alternative, these components offer an active (terminals 4.1 and 4.2) or
passive (terminals 5.1 and 5.2) input for field devices in 2-wire or 4-wire operation
and two active outputs (terminals 2.1 and 2.2 or 3.1 and 3.2). The connection is
made on terminals x.2 and x.3 of REGARD 7000 Terminal Blocks. The HART
communication between the transmitter and the module 4-20 mA Input HART is not
affected by components qualified by Dräger.
WARNING
Missing gas alarm
When using 4-20mA signal duplicators, in particular for applications relating to
functional safety or measuring functions for flammable gases, oxygen or toxic
gases, the following conditions should be ensured during the commissioning
process:
► The anticipated ambient conditions match those in the specification of the 4-
20 mA signal duplicator.
► The transmission properties (measuring errors) of the 4-20 mA signal duplicator
are suitable for use.
► Even values smaller than 4 mA or greater than 20 mA are forwarded correctly.
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HART functionality
HART® functionality includes the following features:
– Display of device/channel assets
Device errors and device warnings (e.g. Beam Block error, temperature
warning) from the transmitter are exported and displayed. This information is
helpful for early detection of maintenance activities that are becoming due.
– Transmitter diagnostics
With transmitter diagnostics activated, consistency between the transmitter
parameters (configurable) and the parameter values set in the 4-20 mA Input
HART module is checked, and any discrepancies are displayed.
– Wizard for configuration synchronisation
The wizard can be used to transfer the transmitter parameters to the 4-20 mA
Input HART module.
The 4-20 mA Input HART module does not support HART® Multidrop operation.
The polling address of the transmitter must be set to "0".
The 4-20 mA Input HART module is set as Primary Master. This setting cannot be
changed. If an additional Master is to be used (e.g. HART
this must be configured as the Secondary Master.
The HART® functionalities of the 4-20 mA Input HART module are supported by
the following transmitters:
– Dräger PIR 7x00
– Dräger Polytron 7000
– Dräger Polytron 8x00
– Dräger Pulsar 7x00
Future Dräger transmitters with HART
Technical data
Number of input channels: max. 8
System components
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manual control unit),
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communication will also be supported.
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