Establishing Communication - Samson 3730 Series Mounting And Operating Instructions

Nickel-plated brass
(10 to 14 mm clamping range)
Stainless steel 1.4305
(8 to 14.5 mm clamping range)
EMC cable gland M20x1.5:
Nickel-plated brass
(7 to 12 mm clamping range)
Adapter M20x1.5 to ½ NPT
Powder-coated aluminum
Stainless steel
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 contact, binary inputs and
forced venting, 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.
Do not use the positioner with open cable
glands.
Seal cable glands left unused with blanking
plugs.
Limit contact
The operation of the limit contact 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.
EB 8384-5 EN
Binary input BI1
1922-8395
An active contact can be operated at binary
input 1. The positioner can report the switch-
8808-0160
ing state over the bus protocol.
Binary input BI2
8808-0143
A passive, floating contact can be operated
at binary input 2. The positioner can report
the switching state over the bus protocol.
0310-2149
Solenoid valve
1400-7114
For positioners fitted with the optional sole-
noid valve for the forced venting function, a
voltage of 24 V DC must be connected to the
relevant terminals +81 and –82.
If there is no voltage connected for the sole-
noid valve at terminals +81 and –82 or
when the voltage signal is interrupted, the
positioner vents the actuator.
NOTICE
!
The actuator does not respond to the set
point when the voltage is too low.
Observe the switching thresholds specified in
the technical data.
5.16.1 Establishing communica-
The communication structure between the
controller, logic solvers (PLC) or automation
system or between a computer or work sta-
tion and the positioner(s) is implemented to
conform with IEC 61158-2.
Mounting and start-up
tion
87