Level limit switch
Series CN 4000
Technical Information / Instruction manual
page
Functional grounding
Electrical installation
Connect external
(standard for Ex units)
or internal terminal
Grounding through
process connection
Metal grounding pin inside the
plastics process connection.
When selecting the option
"Without metal grounding pin"
the grounding must be done
through grounding terminal and
cable (see below)
Metal
process
connection
Do not use teflon
tape
Use flat
gasket
Metal bin
(grounded)
CAUTION: This grounding alone is not enough for Ex applications.
CN 4020
version 120°C
CN 4020 version 180°C
CN 4030
CN 4050
Metal
socket
Grounding through
grounding terminal and cable
Metal bin
(grounded)
For non metal bins:
grounded parts close to
the bin (e.g. metal fixing
elements of the bin)
Internal
terminal
is connected with PE
terminal
Standard cable
max.5 m
The unit must have connection to earth for proper functioning. This can be done by one of the following possibilities:
Capanivo
®
1
2
3
4
5
6
7
8
9
10
11
12
CN 4000
gi011217
16
