917460330020
2019-05-13·HB00·III·en·03
Mounting and Installation
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Electronic relay module
Series 9174
6.2
Installation
6.2.1 Ex i Connection (Terminal 3, 4)
Guide the conductor all the way to the stop in the clamping unit.
Make sure that the stripped part of the wire does not extend beyond the blue terminal
enclosure.
Tighten the terminal screw counterclockwise.
Tightening torque of 0.5 to 0.6 Nm.
6.2.2 Ex e Connection (Terminal 5, 6)
Comply with stipulated stripping length (10 mm).
Guide the conductor all the way to the stop in the clamping unit.
Make sure that the stripped part of the wire does not extend beyond the green terminal
enclosure.
Lightly pull on the wires to check that they are secure.
To remove the wire, guide the screwdriver into the cut-out next to the wire and turn the
screwdriver in the direction of the wire. At the same time, lightly pull on the wire until it
disconnects from the terminal.
6.2.3 Schematic Diagrams
14838E00
Operation under difficult conditions, in particular on ships, requires additional
measures to be taken for correct installation, depending on the operating location.
Further information and instructions on this can be obtained from your regional sales
contact upon request.
DANGER! Explosion hazard due to exposed or incorrectly installed conductors
at the Ex i terminal!
Non-compliance may result in serious or even fatal injury.
Do not exceed the length to be stripped (5 to 7 mm)!
Carefully and securely attach the core end sleeve.
Insert stripped wires into the terminal entirely.
DANGER! Explosion hazard due to bounce when connecting/disconnecting
conductors at the Ex i terminal (terminal 3, 4)!
Non-compliance may result in serious or even fatal injury.
Before work on terminal 3 or 4, de-energise the Ex e electrical circuit.
Install warning labels on the wires connected to terminals 3 and 4 and in the vicinity
of the terminals for the connected device.
Ex i /
I.S.
Ex e
Hazardous area
external PWR