Samson 3730 Series Mounting And Operating Instructions page 78

Installation
Bus line
Route the two-wire bus line to the screw ter-
minals marked "IEC 1158-2", whereby no
polarity needs to be observed.
To connect the limit switch, binary inputs and
solenoid valve, an additional cable gland that
needs to be fitted in place of the existing
blanking plug is necessary.
NOTICE
!
Degree of protection may be impaired.
Î Seal cable glands left unused with blank-
ing plugs.
Î Close the housing cover to obtain the
IP 66 degree of protection.
Refer to the PROFIBUS-PA User and Installa-
tion Guide (PNO document 2.092) for more
information.
+81 -82 IEC 1158-2
24 V DC
Solenoid valve
Bus line
(optional)
Fig. 5-31: Electrical connections
5-44
G
u
+87 -88
BE1
Binary contacts
Limit switch
The operation of the limit switch requires a
switching amplifier to be connected in the
output circuit. Its function is to control the lim-
it values of the control circuit according to
EN 60947-5-6, thus ensuring operational
reliability of the positioner.
Observe the relevant regulations for installa-
tion in hazardous areas.
Binary input BI1
An active contact can be operated at binary
input 1. The positioner can report the switch-
ing state over the bus protocol.
Binary input BI2
A passive, floating contact can be operated
at binary input 2. The positioner can report
the switching state over the bus protocol.
+85 -86 +41
Switching amplifier
BE2
EN 60947-5-6
(optional)
Inductive limit switch
(optional)
Option
-42 A B
Leakage sensor
EB 8384-4 EN