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SIMATIC PCS 7 Maintenance Station10
Performance monitoring of turbo compressors with the
block CompMon:
Depending on the type of medium, the aerodynamic perfor-
mance of a turbo compressor can be impaired by fouling,
caking, or abrasion. The location of the operating point can
also be affected by variances in the state of the medium being
pumped in depending on temperature, pressure and compo-
sition or by changes to the flow resistance on the load side.
The block CompMon calculates performance characteristics
(e.g. conveyance or efficiency) and issues a warning if the cor-
responding values indicate damage to the compressor, caking
by pollutants on the runner or erosion of the blades from the
fluid.
Standard diagnostics functions
In order to obtain information on the diagnostics status of in-
dividual plant areas or components, maintenance engineers
can change from the overview display to the respective diag-
nostics display of the subordinate hardware level. If a fault is
signaled in the overview display, the "loop in alarm" function
permits rapid switching to the diagnostics faceplate of the as-
sociated component. The information is filtered according to
the area of responsibility of the user.
The following information can be offered:
• Display of diagnostics status determined by the system
• Information on the component, such as process tag name,
manufacturer or serial number
• Display of diagnostics messages of a component
• Visualization of type and current state of initiated mainte-
nance measure
Design of a Maintenance Station
The SIMATIC PCS 7 Maintenance Station is of modular design.
In small plants it is possible to install the operator station and
the Maintenance Station on the same PC. Just like the opera-
tor system, the Maintenance Station can be expanded into a
client/server application with multi-client operation. The sig-
nals and messages from the components and devices which
are relevant to maintenance are collected and saved on the
server of a client/server application. They are displayed on the
client.
The SIMATIC PCS 7 Maintenance Station is based on standard
SIMATIC products:
• SIMATIC PCS 7 ES / OS
for configuration and HMI functions
• SIMATIC PDM
for connecting the field devices and
• SIMATIC SNMP OPC Server
for interfacing network components
Configuring a Maintenance Station
When setting up a Maintenance Station, the user only
has to assign the corresponding attribute once during the con-
figuration. This automatically generates a technological hier-
archy for diagnostics displays.
The diagnostics displays can be subsequently expanded by
project-specific contents.
When configuring PCS 7, the technological plant view automatically
becomes its own maintenance area
Visualization in the Maintenance Station
In the operating state, the Maintenance Station's client re-
quests cyclic data from the associated server. The client can
additionally access hardware components and field devices di-
rectly by means of an online connection so that the mainte-
nance engineer has the relevant information available at all
times. Various components with highly different diagnostics
capabilities are used for SIMATIC PCS 7. However, from the vie-
wpoint of maintenance, all components are displayed in the
same manner. Therefore the maintenance and diagnostics
conditions of the components are represented by standar-
dized symbols.
Technological plant view
Maintenance
Station
Transfer of maintenance-
relevant information to the
Maintenance Station
Operator
Station
G_ST70_XX_00414
Maintenance_PA_04_2010_en.book Seite 10 Dienstag, 6. September 2011 9:45 09
© Siemens AG 2011
- Maintenance System 1
- Introduction 2
- Contents 3
- Detailed view of a component 8
- © Siemens AG 2011 10
- Symbol display of a component 11
- PM-MAINT status window 12
- Monitoring and diagnostics 13
- SITRANS TH400 SITRANS TW 16
- SITRANS P DS III 17
- SITRANS P300, digital display 17
- Gas analyzers 19
- Process gas chromatography 20
- 24 V load feeders 22
- 0RWRUIHHGHU 23
- 0DFKLQH 23
- IEC motors 25
- The CM240NE chemistry module 25
- The SINAMICS family 25
- Plant Asset Management – 27
- Get more information 28
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