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DIQ/S 28X What to do if ...
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9.3 Replacing system components
9.3.1 Replacing passive components
Passive components include all components that the Universal Transmitter can-
not recognize.
These include:
 MIQ/PS (power supply module)
 DIQ/JB (branching module)
 DIQ/CHV (module for automatic compressed air cleaning)
 Cables (SNCIQ, SACIQ).
9.3.2 Adding and replacing IQ sensors
Inactive datasets
of IQ sensors
If an IQ sensor is removed from the system, its settings remain stored in the Uni-
versal Transmitter. A "?" appears in the left column of the
Edit list of sensors
menu. This indicates an "inactive dataset". A dataset contains the following
information:
 Serial number of the IQ sensor (and, with it, the type of sensor)
 Display position
 All sensor settings
 All characteristics of the link with an output.
If no suitable inactive dataset is available, a newly connected IQ sensor is auto-
matically recognized as a new module and added to the list of sensors.
It is always possible to replace components and assign a substitute
if the software state of the substitute component is as high as or
higher than the software version of the original component.
WARNING
If the MIQ/PS power supply module is opened during op-
eration, there is a danger to life due to possible hazard of
electric shock. The MIQ/PS may only be opened when the
line voltage is switched off. Secure the line voltage
against being switched on again.
Only ever replace components when the
IQ S
ENSOR
N
ET
system is switched off. Defective components are re-
moved in the reverse order to the installation (see
chapter 3 I
NSTALLATION
).