Cashco Siemens PS2 I/P - Manual (Page 30)

Design and Functional Principle
30
SIPART PS2 Manual
A5E00074631-01
The SPART PS2 is integrated in the following parameterization tools:
-
Handheld communicatorR
-
PDM (Process Device Manager)
- AMS (Asset Management System; update in preparation)
- Cornerstone
.
NOTE
Operation on the positioner has priority over the settings via the HART
inetrface.
Communication is aborted by a power failure at the positioner.
2.5.4 Alarm module
The alarm module contains
- 3 digital outputs and
-
1 digital input
The digital outputs serve to output fault messages and alarms. The
configuration is described in chapter 4.4, page 79, with the parameters
44 to 54.
By an external signal applied at digital input (DI2) the actuator can be
blocked or driven to its limit positions for example depending on the
configuration. The configuration is described in chapter 4.4, page 79,
with the parameters 43.
The alarm module is available in two versions:
-
explosion protected for connecting to switching amplifier DIN 19234
-
non--explosion protected for connection to voltage sources with a
maximum 35 V
The semiconductor outputs of the alarm module report an alarm (signal
state Low) by switching off with high resistance. They are conductive in
the High state (without alarm). The dynamic control makes them error
self--reporting.
The outputs are potentially isolated from the basic circuit and each
other.
The digital input is double.
-
one potential isolated for voltage level
- one not potential isolated for floating contacts
These two inputs are designed as logic OR links.
Function