Profibus DP Mk2 Option Card Installation Manual
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Publication PUB088-005-00_1017
Note: For actuators fitted with the profibus disconnect module and that are installed in
potentially explosive atmospheres (hazardous areas), the hazardous area rating of the
actuator (as stated on the nameplate) is only maintained when the profibus disconnect
module is correctly assembled to the actuator and installed (e.g. cable glands) in accordance
with the relevant hazardous area code of practice. If for any reason the profibus disconnect
module has to be removed from the actuator (for instance to replace the actuator), the power
must be removed from it (and the network) and the necessary hazardous area permits to work
must be obtained. Under no circumstances, while the profibus disconnect unit is removed
from the actuator, must the power be connected to it and to the network, when a potentially
explosive atmosphere is present.
If it is required that the network is ‘powered up’ with a
potentially explosive atmosphere present then the profibus disconnect module must correctly
installed and assembled to an actuator or it can be assembled to a suitable approved
ROTORK designed parking housing (refer to ROTORK for more information).