10
8.2.1 EBN861
Electronic unit EBN861 has a total weight of around 42 kg. For safety reasons it may be necessary to
mount each of the two parts separately.
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Undo and remove the cover screws.
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Fold down the front part, then lift it off from the hinge bolts towards the top.
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Undo the internal connection between the two housing parts.
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Undo the hinge screw
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First mount the rear part of the housing
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Attach the front housing part to the hinge bolts, insert a screw into the top bolt and fasten.
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Make the internal connections between the two housing parts.
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Close the cover and fasten the cover screws
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Connect the cables
9.
Electrical connection
Each actuator requires a Contrac electronic unit which is loaded with the type specific-software. Care-
fully consider the instructions for the electronic unit and compare the data labels of the actuator and
the electronic unit in order to ensure a proper hard- and software assignment.
The cable between the actuator and the electronic unit is connected to terminals. Consider the follow-
ing issues:
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Consider the local regulation concerning the setup of electrical devices within hazardous areas. This
applies particularly to EN 60079-14 for the setup of the screen and the potential compensation be-
tween the actuator, the electronic unit and the motor protection unit (refer 1) to fig. 8 and 9).
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For the connection of the motor and the position transmitter only use ATEX certified EEx e cable
glands with IP66 acc. to EN 50019.
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Use a cable socket or a solid wire, bended to a „U“, to connect the motor cable.
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Ensure a proper strain relief for all cable connections.
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Protect all cables in the connections chambers against contact with metal components. Ensure a
gap of at least 6 mm between all conductive components.
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Remove the desiccant in motor and position sensor.
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Do not change the factory-set position of the motor terminal chamber.
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Seal all not used cable entries with ATEX certified IP66 plugs.
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Use a certified cut-off unit for the thermal motor monitoring. Permitted units are e. g.:
type 3RN1, ident no. II (2) G, PTB 01 ATEX 3218 , Siemens or
type EMT6-..., ident no. II (2) G, PTB 02 ATEX 3162 , Moeller
The ABB motor temperature monitoring unit SD241B may also be used for these measures.
For details see instructions for electronic units for rack installation.