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Interface settings
● To set the test signal:
1. Select the desired test via Settings > Communication >
Analog interface.
Set fault
Set warning
Set mainten.
2. Once the alarms at the controller are inhibited, confirm the
message Inhibit all alarms.
3. Select and confirm Enable or Disable.
12.1.13 Beam block
This function is only available for Polytron 87x0 IR (using the
sensor PIR 7000/7200).
The factory default setting for the beam block function is off.
If turned On, the beam block signal will be transmitted on the
analog interface if the optics of the PIR 7000/7200 sensor is
"dirty". The optics of the PIR 7000/7200 can become "dirty" if
there is a build-up of deposits on the optical surfaces.
However, if the gas concentration rises to a level above beam
block limit, the instrument returns to normal operation.
If the build-up of deposits on the optical surfaces increases
beyond the point where a measurement is possible, the
instrument will go into fault.
● To set beam block signals on/off:
1. Select Settings > Communication > Analog interface
and the desired option.
Beamblock on/off
Set beamblock
2. Select Enable or Disable and confirm.
● To set beam block signals:
1. Select Settings > Communication > Analog interface
and the desired option.
Beambl. current
Beamblock limit.
2. Select the current line for editing the current and confirm.
3. Set the current and confirm.
The setting for the beam block current is displayed.
4. Select Confirm and confirm with OK.
34
This function sets the current
to the fault current.
This function sets the current
to the warning current.
This function sets the current
to the maintenance current.
This function switches the
beam block on or off
This function sets the current
to the beam block warning
current
This function defines the cur-
rent for the beam block sig-
nal.
This function defines the
maximum limit if the beam
block signal will be transmit-
ted on the analog interface.
12.2 HART interface
12.2.1 Setting the polling address
The polling address (query address) configures the gas
detector for analog operation or multidrop operation.
HART command: #6 (Write Polling Address)
1. Select Settings > Communication > Hart interface >
Polling address.
2. Set the polling address and select Confirm.
0
Activates analog operation.
1 to 15
Activates multidrop operation. The 4 to
20 mA interface is deactivated and set to a
constant current of approx. 1 mA.
Configure all instruments on a line with different polling
addresses. It is advised to choose a sequence starting
with 1.
12.2.2 Displaying the Unique Identifier
The Unique Identifier (unique HART address) must be known
for almost all HART addressing commands.
HART commands:
–
#0 (Read Unique Identifier)
– #11 (Read Unique Identifier associated with Tag)
1. Select Settings > Communication > Hart interface >
Unique identifier.
2. The Unique Identifier is displayed.
12.2.3 Setting the HART tag
The HART tag (measurement point identification) is used to
mark a measurement point.
1. Select Settings > Communication > Hart interface >
Tag.
2. Set the HART tag and select Confirm. The HART tag can
consist of up to 8 alphanumeric characters.
12.2.4 Setting the Dräger REGARD protocol
This function switches between different HART protocols.
1. Select Settings > Communication > Hart interface >
Dräger REGARD.
2. Select the software version corresponding to the
REGARD controller.
12.3 Digital interfaces
Information on configuring the other interfaces is provided in
the following documents:
Interface
PROFIBUS PA
Foundation Fieldbus FF
Modbus RTU
Instructions for use
Document
9033782
9033783
9033781
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Dräger Polytron
8000 Series
