KROHNE DW 181-182-183-184 EN - Manual (Page 10)

10 Installation and operating instructions DW 181 - 184
2 Electrical Connections
Disconnect the power supply before opening the housing
Number
of
switches Switch
types
Limit switch adjustable over entire range
Type
K1
A
1
Type
K1 B
Type
K2 C
Type
K2 D
Type
K2 E
2
Type
K2 F
1
Type
KV1 G
1
Type
KV2 H
K1
+
K2
Change
over
(SPDT)
• The electrical connection
conforms to the standard
EN61010-1, protection
class 1 (for aluminium
housing) or class 2 (for
PVC housing), voltage
category III, and
interference degree 2.
• The DW range conforms
to EMC directives NF EN
50 081.1 (Emission) and
NF EN 50 082.2
(Immunity).
• It is obligatory to have a
switching or circuit
breaking device, following
present regulations. The
devices should completely
isolate the unit and be
easily accessible, close to
the unit.
• Both the live (L) and
neutral (N) wires should
be protected by a fuse
(4…6.3 A Time Lag).
During the wiring
procedure the ground wire
should always be
connected first (relevant
only for aluminium
housing).
• EEx ia versions must be
used with a certified
intrinsically-safe power
supply.
N.B. Use of the unit
outside the specifications
detailed in this manual can
compromise the safety
measures designed into the
unit. Always disconnect the
power supply before
accessing the terminals.