Installation; Mounting; Ebn853; Ebn861 - ABB EBN861 Operating Instruction

EBN853 / EBN861 ELECTRONIC UNIT | OI/EBN853/EBN861/EX-EN REV. C

6 Installation

Mounting

NOTICE
Damage to components!
Damage to components caused by ingress of foreign bodies
or humidity.
• Keep all housing covers and terminal compartments
closed during installation to prevent the ingress of foreign
bodies such as drilling shavings, liquids or dust.
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 cables are connected to the actuator through two terminal
compartments:
• Motor connection compartment (Ex d)
• Sensor terminal compartment (through Ex e terminals)
The SD241-B motor temperature monitoring unit or a similar,
certified tripping unit must be connected to the power supply of
the electronic unit.
The motor temperature monitoring unit must be installed
outside of the potentially explosive atmosphere.
When installing the electronic unit, observe the following points:
• You must be able to activate the power supply of the
electronic unit on-site.
• All signal cables and the motor cable between the
actuator and electronic unit must be shielded.
• The cable shield must be placed on both housings when
connecting the electronic unit and the actuator.
• The maximum vibration load must be observed during
installation, see Device designs on page 11.
• When mounting the electronic unit in work and traffic
areas that may be accessed by unauthorized persons, the
operator is required to take suited protective measures.
Change from two to one column

EBN853

1. Fasten the electronic unit to a vertical mounting plate using
grade 8.8 screws. Tensile strength 800 N/mm
(116032 pounds/square in.), yield strength 640 N/mm
(92826 pounds/square in.).
2. Provide adequate room for installation and ensure easy
access.
3. The cable entries must be directed to the left.

EBN861

Note
The total weight of the electronic unit is 40 kg (88 lbs). For this
reason, the electronic unit is equipped with a load-bearing
eyelet.
If, for technical reasons, the load-bearing eyelet cannot be used,
the two halves of the housing can be installed separately.
Separating the housing halves
1. Place the electronic unit on a horizontal surface.
2. Unscrew the cover screws (Figure 3).
3. Flip open the electronic unit cover.
4. Disconnect the internal plug connection between the housing
halves.
5. Close the electronic unit cover.
6. Unscrew the hinge screw (Figure 3).
7. Flip the electronic unit cover forward while lifting it up and
off the hinge pin. Precisely guide the cover of the electronic
unit cover in the process.
Mounting
1. Fasten the electronic unit or the lower part of the electronic
unit to the vertical mounting rail of the mounting rack using
grade 8.8 screws. Tensile strength 800 N/mm
(116032 pounds/square in.), yield strength 640 N/mm
(92826 pounds/square in.).
2. Provide adequate room for installation and ensure easy
access.
3. The cable entries must be directed down.
Mounting the housing halves
1. Set the electronic unit cover down on the hinge pin and screw
in the hinge screw. Precisely guide the cover of the electronic
unit cover in the process.
2. Reconnect the internal plug connection.
3. Close the electronic unit cover and screw in the cover screws
(Figure 3).
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