Samson S2000 Instructions d'exploitation Page 50

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Bus line
Route the two-wire bus line to the screw ter
-
minals marked "IEC 1158-2", whereby no
polarity has to be observed.
Refer to the PROFIBUS-PA User + Installation
Guide (PNO document 2.092) for more in
-
formation.
NOTICE
To connect the limit switch, binary inputs,
and forced venting, an additional cable
gland that needs to be fitted in place of the
existing blanking plug is necessary.
Open cable glands are not permissible as
the degree of protection IP 66 only applies
when the positioner housing is sealed.
Limit switch
For operation of the limit switches, switching
amplifiers have to be connected in the out
-
put circuit. Their function is to control the
limit values of the control circuit according to
EN 60947-5-6, thus ensuring operational
reliability of the positioner. If the positioner
is installed in hazardous areas, the relevant
regulations must be observed.
Binary input 1
An active contact can be operated at binary
input 1. The positioner can report the switch
-
ing state over the bus protocol.
Binary input 2
A passive, floating contact can be operated
at binary input 2.
The positioner can report the switching state
over the bus protocol.
50 EB 8384-4 EN
Connections
u
Option
+81 -82 IEC 1158-2 +87 -88 +85 -86 +41 -42 A B
24 V DC BE1 BE2
G
Fig. 21 · Electrical connections
Binary contacts
Bus line
Inductive limit
switch (optional)
Switch. amplifier
EN 60947-5-6
In preparation
Solenoid valve
Forced venting
(optional)
(optional)
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