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Î For Ex tb T6 only use cables and cable
glands which are suitable for the tem-
perature range from –55 to +80 °C.
6.4 Equipment for use in zone
2/22
In equipment operated according to type of
protection Ex nA II (non-sparking equipment)
according to EN 60079-15:2003, circuits
may be connected, interrupted or switched
while energized only during installation,
maintenance or repair.
Equipment connected to energy-limited cir-
cuits with type of protection Ex nL (ener-
gy-limited equipment) according to
EN 60079-15:2003 may be switched under
normal operating conditions.
6.5 Cable entry
The threaded connection for the terminal
compartment is designed with an M20x1.5
or ½ NPT thread.
The screw terminals are designed for wire
cross-sections of 0.2 to 2.5 mm². Tighten the
screws by 0.5 to 0.6 Nm.
EB 4747 EN
1
41
42
Inductive proximity sensors
1
42
41
43
Electric microswitches
Fig. 8:
Wiring plans
6.6 Switching amplifier
The operation of the Type 4747-xxx01 Limit
Switch with inductive NAMUR limit contacts
requires switching amplifiers to be connected
in the output circuit. To ensure the operating
reliability of the limit switch, the amplifiers
should comply with the limits of the output
circuits conforming to EN 60947-5-6.
Observe the relevant regulations for installa-
tion in hazardous areas.
Electrical connections
2
51
52
2
52
51
53
35
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