Samson 3785 series, Монтаж и эксплуатация

Страница: 9 / 80

31.25 kbit/s via twisted-pair cables accord-
ing to IEC 61158-2.
Positioners are generally adjusted by a per-
sonal computer. One or more positioners
are connected to the PC’s PROFIBUS seg-
ment via segment coupler.
After mechanically resetting the positioner
to zero, it can be automatically started up
via initialization procedure. During this in-
itialization procedure, zero is automatically
adjusted, and the preset span is checked.
The positioner is supplied with a standard
configuration for a control valve with a
rated travel of 15 mm and designed for inte-
gral positioner attachment. An individual
configuration to adapt the positioner to other actuators can only be carried out by
means of communication.
Configuration
The positioner is configured and operated
at the PC over the SSP interface (13) using
TROVIS-VIEW. Alternatively, it can be con-
figured via a segment coupler, for example,
by the COMMUWIN II user interface (by End-
ress + Hauser) or SIMATIC PDM user interface
(by SIEMENS).
You can enter parameters during configura-
tion such as control characteristic, direction
of action, travel limitation, travel range,
transit time and alarms.
Binary input
Forced
venting
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
Pneumatic
supply
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 component
10 Actuator stem
11 Lever
12 Clamp
13 SSP interface
Exhaust
air
EB 8382-1 EN
9
Design and principle of operation