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ing plug must be the same as that of
the limit switch.
Do not loosen enameled screws in or
on the housing.
Note on the selection of cables and
wires:
− Observe clause 11.2 for installa-
tion of the non-intrinsically safe
circuits and clause 12 of
EN 60079-14 (VDE 0165,
Part 1) for installation of the in-
trinsically safe circuits.
Clause 12.2.2.7 of EN 60079-
14 applies when running multi-
core cables and wires with
more than one intrinsically safe
circuit.
− The radial thickness of the insula-
tion of a conductor for common
insulating materials (e.g. polyeth-
ylene) must not be smaller than
0.2 mm. The diameter of individ-
ual wires in a fine-stranded con-
ductor must not be smaller than
0.1 mm. Protect the conductor
ends against splicing, e.g. by us-
ing wire-end ferrules.
− When two separate cables are
used for connection, an addition-
al cable gland can be installed.
− Seal cable entries left unused with
certified Ex e blanking plugs.
The electronic limit switch is powered over
the connection of the contact A according to
DIN EN 60947-5-6. An additional electrical
power supply is not required.
EB 8390 EN
The following function and terminal labeling
apply to the contacts A and B:
Connection
+
Contact A
41
42
Contact B
51
52
Cable entry
The threaded connection for the terminal
compartment is designed with an M20 x 1.5
thread.
The screw terminals are designed for wire
cross-sections of 0.2 to 1.5 mm². Tighten by
at least 0.5 Nm.
NOTICE
− The switching voltage of the inte-
grated solenoid valve is connected
either at the terminals V1 (81/82)
or at the terminals V3 (81/82)
(Type 3738-20-xxx1400xxx000).
Only connect one pair
of 81/82 terminals.
− Do not connect the switching volt-
age to the contacts A-St. Other-
wise, the device will be damaged.
Connections
–
Position
Fail-safe position
(0 %)
Operating position
(100 %)
33
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