Establishing Communication - Samson 3787 Mounting And Operating Instructions

Connections

3.2.1 Establishing communication

Communication between positioner, pro-
grammable logic controller or automation
system or between PC and workstation and
positioner(s) is established in accordance
with EN 61158-2.
Process
management
system
Termination
Termination
Process
management
system
FOUNDATION
EN 61158-2
Termination
3787-1
Fig. 10 ⋅ FOUNDATION
28
EB 8383-1 EN
FOUNDATION
3787
3787
TM
Fieldbus
FOUNDATION
3787-1
TM
Fieldbus connection, for non-hazardous areas (top) and for hazardous areas (bottom)
If positioners are used in hazardous areas,
ex-barriers must be used.
A maximum of 32 control valves can be
operated in one segment. The number of po-
sitioners that can be connected is reduced
when they are used in hazardous areas.
FOUNDATION
TM
Fieldbus EN 61158-2
3787
Non-hazardous area
Hazardous area
TM Fieldbus EN 61158-2
3787-1
Supply unit
TM
Fieldbus EN 61158-2
3787
Supply unit
Ex-fieldbus barriers
3787-1