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ARS*-B2-IA*
Installation
3.3
Connection Assignment
Danger!
Danger to life from incorrect installation
Incorrect installation of cables and connection lines can compromise the function and the elec-
trical safety of the device.
•
Observe the permissible core cross section of the conductor.
•
When using stranded conductors, crimp wire end ferrules on the conductor ends.
•
Use only one conductor per terminal.
•
When installing the conductors the insulation must reach up to the terminal.
•
Observe the tightening torque of the terminal screws.
Danger!
Explosion hazard from connection damage
Manipulating connections outside of the specified ambient temperature range can lead to
material damage, resulting in an unwanted failure of the connection. This could result in an
increased explosion hazard in potentially explosive atmospheres.
Only manipulate connections in the specified ambient temperature range.
Temperature range: -5 C° ... +70 C°
Danger!
Explosion hazard from exposed conductors
Exposed conductors of inadequately attached cables can cause sparks that can ignite the sur-
rounding potentially explosive atmosphere.
When installing the device ensure that the cables are adequately attached.
Danger!
Danger to life from incorrect installation!
Incorrect installation of cables and connection lines can compromise the function and the elec-
trical safety of the device.
•
Protect connectors against loosening.
•
Attach connectors with the fastening screws as designated.
Observe the permissible cable type and cable length given in the respective hazardous area
certificate.
The following section describes the different connection details of the rail field switch with par-
ticular reference to the torques required for a safe installation. For any terminal connections,
observe the following cable and connection information.
Connector with Screw Terminals: Cable and Connection Information
•
Permissible core cross section: Screw terminals with flexible or rigid wires: 0.2 mm
mm
•
Insulation stripping length: 9 mm ... 10 mm
•
If you use stranded connectors: Crimp on wire end ferrules
•
Ensure that connectors are mechanically locked
•
Torque required for tightening the terminal screws: 0.5 Nm
•
Torque required for tightening the retaining screws: 0.3 Nm
Connector with Spring Terminals: Cable and Connection Information
•
Permissible core cross section: Spring terminals with flexible or rigid wires:
0.5 mm
•
Insulation stripping length: 10 mm ... 11 mm
2
2
2
... 2.5 mm
2
... 2.5
21
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