Installation
16
EBS852, EBS862 (Contrac) 42/68-831-EN
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4 Installation
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The electronic unit is installed in the vicinity of the drive outside the hazardous area. Screw-type
terminals are used to connect the two modules on the actuator side and on the electronics side.
The connections are made on the drive for the motor in the motor's Ex d connection space and
for the actuating sensor using Ex e terminals in the actuating sensor's connection space.
A voltage trip unit is also required; this too is installed outside the hazardous area.
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Important
Prior to installation or service activities, the electronic unit and actuator must be disconnected
from the power supply and secured to prevent unintentional startup.
• It must also be possible to disconnect the electronic unit and actuator onsite.
• All signal and motor cables between the actuator and electronic unit must be shielded.
• The shielding must be placed on both housings when connecting the electronic unit and
the actuator.
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4.1
EBS852
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1.
Mount the module on the rack's vertical mounting rail with screws of property class 8.8
(tensile strength 800 N/mm
2
(116032 pounds/square inch), 640 N/mm
2
(92826 pounds/square inch).
2.
Provide adequate room for installation and make sure the actuator is accessible from all
sides.
3.
Cable entries point to the right.
4.
Remove the cover from the connection space (Fig. 7, item 3).
5.
Insert the cable into the cable entry and make the connection as shown on the
connection diagram.
6.
Check that the cable connections are properly seated, tighten the shield clamp, and
replace the cover.
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