Mounting and Installation
20
230230 / 947160310010
2019-03-08·BA00·III·en·01
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Digital Input Output Module NAMUR
for Ex n Zone 2
Series 9471/35
8.2.2 Requirements for Dismounting / Module Replacement
Observe the following before dismounting and replacing the module:
• During operation in a non-hazardous area, it is functionally possible to insert/remove
terminals X1 and X2 at any time. In addition, the module may also be mounted on the
BusRail or removed (hot swap).
• If there is no field cable connected or if this is de-energised, the module can be
mounted on or removed from the BusRail in the hazardous area.
• During operation in hazardous areas, pluggable field cable connections X1, X2 may
only be plugged in or removed in the hazardous area if they are de-energised.
Therefore, all the electrical circuits connected to terminals X1 and X2 must be
disconnected from the supply in advance.
Dismounting
• Loosen the screws of pluggable terminals X1 and X2.
• Disconnect pluggable terminals X1 and X2 from the module to be replaced.
• Pull the blue notch lever of the module upwards to unlock the module.
• Remove the module vertically from the BusRail.
Module replacement (after dismounting)
• Position the new module vertically at the intended slot of the BusRail and press lightly
to snap it into place.
• Press the module down onto the BusRail to ensure that it is properly secured!
When doing this, check that there is no gap between the module and BusRail!
The module must not be able to disconnect without the notch lever being actuated!
• Plug the pluggable terminals X1 and X2 into the module and secure them against
loosening using screws (tightening torque 0.5 to 0.6 Nm).
Replacing modules
Observe the following when replacing an IS1 module 9471/15 or 9470/25 with an
IS1+ module 9471/35 with the same functions:
• Ensure that the terminal assignment is adapted to that of the 9471/35
(see table below).
• In order to use the new IS1+ functions, update the firmware of the CPM 9440 or
CPU 9441 if necessary.
• If necessary, use a current GSD in PROFIBUS-DP operation.
• Please contact your responsible distributor for further information.
When replacing the module with a module with identical design,
the set parameters are maintained. No further user adjustments are
necessary. When replacing the module with a module with a different
function, the module reports a configuration error (red "ERR" LED flashes).
The module must be either re-configured or replaced with a module of correct
type.
