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3 Product Description
X-HART 32 01
Page 12 of 58
HI 801 307 E Rev. 5.00
3.4
Structure
The module is equipped with 32 HART channels for HART communications with transmitters or
actuators. The HART channels are electrically isolated from one another and from the voltage
supply. Analog input or output modules are connected in parallel with the HART module via the
corresponding connector board, see Chapter 5.4.2 and Chapter 5.4.4.
The transmitter supply as well as the open-circuit and short-circuit monitoring functions for the
analog input and output modules are not affected by the HART module connected in parallel.
HART operation influences the analog measurement accuracy by approx. 1 %.
The safety-related 1oo2 processor system for the I/O module controls and monitors the I/O
level. The data and states of the I/O module are made available to the processor modules via
the redundant system bus. The system bus has a redundant structure for reasons of availability.
Redundancy is only ensured if both system bus modules are inserted in the base plates and
configured in SILworX.
The module is equipped with LEDs to indicate the status of the HART communication channels,
see Chapter 4.6.2.
3.4.1
Block Diagram
The following block diagram illustrates the structure of the module.
M16
01
16
17
32
M17
M32
M1
X-A
I/O
AI/01+
AI/01-
AI/0 n+
AI/0 n-
A
I/0
n+
A
I/0
1+ A
I/0
1-
A
I/0
n-
X-CB AI/O HART
HART Modul
X-BASE PLATE
A
B
L1+ L2+ L1- L2-
L1+ L2+ L1- L2-
System Busses
Safety-Related Processor System
Interface
Safety Switch
Power Supply
Watchdog
HART Channels (M1…M32)
Capacitive Galvanic Isolation
Field Zone: Proximity Switches or Contact Makers
Analog Input or Output Module
Figure 2: Block Diagram