Samson 4785, Монтаж и эксплуатация

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of 31.25 kbps using twisted-pair cables as
specified in IEC 61158-2. The positioner set-
tings are usually adjusted with a PC. By
using a segment coupler, one or more posi-
tioners can be connected to the PC’s
PROFIBUS segment.
After mechanically setting the positioner to
zero, it can be automatically started up by
an initialization procedure. During this in-
itialization, zero is adjusted automatically
and the preset span is checked.
The positioner is delivered with a standard
configuration for a control valve with a
rated travel of 15 mm, designed for integral
positioner attachment. The positioner can
be individually configured to adapt it to
other actuators only by means of communi-
cation.
Configuration
The positioner is configured and operated
from the PC via the SSP interface (13) using
TROVIS-VIEW. Alternatively, a segment
coupler can be used together with, for
example, the COMMUWIN II interface by
E Hauser or the SIMATIC PDM soft-
ware by SIEMENS.
During configuration, you can enter par-
ameters such as characteristic, operating di-
rection, travel limitation, travel range, tran-
sit time and fault message.
Fig. 2 ⋅ Functional diagram
11
10
1
12
e
p
3
4
2
5
9
7
6
1
G
µ
C
61158-2
IEC
e
p
G
µ
C
PROFIBUS-PA
8
Serial Interface
13
Supply air
Exhaust air
Binary input
Forced venting
1 Inductive displacement sensor
2 Microcontroller
3 On-off valve for supply air
4 On-off valve for exhaust air
5 Microcontroller
6 Switch for bus address and
write protection
7 Binary input
8 Forced venting
9 IEC 61158-2 interface
module
10 Actuator stem
11 Lever
12 Clamp
13 SSP interface
EB 8382-2 EN
11
Design and principle of operation