72
Project performance and typical project application
The PDA system is widely used
in the large and medium-sized enterprises. Its project performance is not
listed one by one.
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No.
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Process equipment
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1
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The silicon steel sheet mill
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2
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Hot strip rolling mill
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3
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CSP - Compact strip
production
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4
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Cold rolling mill
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5
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Composite mill (bullet shell)
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6
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Steelmaking, continuous casting
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7
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Steel pipe
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8
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Heating furnace
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9
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Temper mill
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10
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Laboratory
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11
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Flash butt welding machine
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12
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Measurement of battery consumption curve
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13
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Pneumatic conveying experiment
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14
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Cement
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15
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Energy management
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16
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Data telemetering service
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17
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Reforming of Data Acquisition System
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18
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Brewery information
system
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19
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Point Map Analysis System of a Brewery
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20
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Data analysis for
Brewery CO2 recovery prediction and measured data
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|
21
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Main drive SL150
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|
22
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Quality management and
digital coil
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|
23
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Unmanned locomotive and
intelligent iron metal transportation system
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|
24
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All-weather umanned
wharf
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|
25
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Electro hydraulic servo
control system
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|
26
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Automobile monitoring
system
|
|
27
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HSM digital coil system
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|
28
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CSM digital coil system
|
|
29
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IGBT Flexible DC
Chopper Power Supply - Green Intelligent Super Arc Furnace
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|
30
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MPT(Mill Pacing Tracing)
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31
|
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72.1 PDA
system of a hot temper mill
Temper mill occasionally
oscillated in 2011.3.8, and could not product, inappropriate pressure ring
parameter setting was found after the historical curve (in red circle below)
was analyzed, and normal production was restored after adjustment.
Figure 72.1
Application of PDA in Leveling Machine
72.2 Hydraulic
vibration PDA system for thick slab continuous casting mould in a steel
factory
The mould is the core
equipment of continuous casting machine, Hydraulic vibration can effectively
reduce the friction resistance of casting billet and mould room compared with
the mechanical vibration, so as to improve the surface quality of billet,
improve the drawing speed, increased yield; the plate spring guide is used,
no mechanical wear, equipment maintenance workload and cost can be reduced;
anisotropic small deviation; online adjustable amplitude, frequency and
waveform, achieve sinusoidal and non sinusoidal oscillation can be realized
when the prestressed spring orientation precision is used, to meet the
requirements of the steel casting process.
Figures 72.2 and 72.3 show the
vibration process of starting and stopping, commissioning personnel may
adjust various parameters according to waveform, make feedback to follow
reference as fast as possible and the overshoot is small, sometimes the servo
valve blockage can be analyzed Intuitively from the curve because hydraulic
oil is not clean, the reasons is found out quickly. Normal production worker
can call historical curve after vibration stopping, the quantitative analysis
may be done with signal interference, high friction, oil plug or irregular
operation.
Figure 72.2 Mold
Hydraulic Vibration Starting Process Curve
Figure 72.3 Hydraulic
Vibration Stop Process Curve of Crystallizer
Figure 72.4 shows the
vibration curve during normal production, with a sampling period of 2ms.
Based on the curve, control system parameters can be adjusted, system working
status can be determined, and fault causes can be identified. The control
system is S7-400+FM458.
Figure 72.4 Hydraulic
vibration curve of a certain thick plate continuous casting mould
The below figure is PDA curve
of 1700mm Hsm, 9200 points
are collected, time base is 1.95ms, Three PDA systems of German brand are
replaced after control system is reformed. Performance is significantly
improved, the operation is simpler.
Figure 72.5
Application of PDA in the Hot Strip Rolling Control System
72.4
Performance testing system for a large AGC oil cylinder factory
Figure 72.6 shows the
hysteresis test curve of an AGC cylinder from a certain oil cylinder factory.
The hysteresis reflects performance indicators such as hydraulic cylinder
friction, with a sampling period of 0.5ms. A report can be directly generated
based on the measurement curve.
Figure 72.6
hysteresis test curve of a large AGC oil cylinder
72.5
A pneumatic conveying experimental
data testing system
PDA supports complex
mathematical formula, It may open a week of experimental data and find the
law.
Figure 72.7
Application of PDA in pneumatic conveying systems
72.6 PDA
system of a steel pipe plant
9906 points are collected,
collection period is 2ms, PLC is the SIEMENS S7-1500 and TDC, the acquisition
control function is: hydraulic pass control system, main drive and auxiliary
drive, mill district hardware IO, control logic, stretch reducing mill main
drive, stretch reducing mill cooling bed auxiliary transmission, hardware IO
and control logic.
Figure 72.8
Application of PDA in Steel Pipe Plants
The function
RisingEdgeInterval calculates the rolling time of each steel pipe.
Figure 72.9
Customized function statistics of rolling time for steel pipe factories
72.7 Power
management system of a cement plant
Energy saving and emission
reduction is an effective means to reduce costs. PDA provides a comprehensive
analysis by equipment energy consumption characteristics, and also as a daily
management tool. The report column is dynamically set according to the .pda
analysis strategy. The following figure shows the electricity statistics of
hundreds of meters in a cement plant.
Figure 72.10
Statistical Report on Electricity Consumption of Air Compressors in the Whole
Plant
Figure 72.11 Summary
Statistical Report of Total Score Reduction Table
Figure 72.12
Statistical Table of Electric Energy of Cement Mill
Figure 72.13 Electric
Energy Statistics Report of Kiln Head Coal Mill Equipment 1
The Acuvim II series
three-phase network power instruments jointly developed by Beijing Aibo
Precision Electric Co., Ltd. have relatively complete functions: full
parameter measurement, bidirectional four quadrant 0.2S level electricity
metering; The power quality event recording and waveform recording functions
provide technical basis for accident recall; RS485, PROFIBUS, Ethernet,
support for web browsing, scheduled email sending, ModbusTcp; Provide full
parameter timed recording function; Real measurement of communication refresh
per cycle, suitable for occasions with high response speed requirements.
Figure 72.14 A Full Parameter
Energy Meter
72.8 A railway data teletransmission system
The control system of a
certain railway station is S7-200smart, and the railway bureau needs to
collect signals from it, but only supports the ModbusTcp protocol. The
ModbusTcp protocol of S7-200smart is relatively troublesome. PDAServer
communicates with PLC through the S7 protocol, and the collected real-time
data is mapped to the Modbus register. The railway bureau can communicate
with ModbusTcpServer, and the following figure is a schematic diagram of a
railway data remote transmission system.
Figure 72.15
Schematic diagram of PDA data remote transmission network for a certain
railway station
72.9 A data collection
and statistics system for
operation time of a certain machine set
The below figure is a
operation time statistics report of a certain machine set, daily, monthly and
team reports may be automatically generated.
Figure 72.16 Daily
and monthly operation time reports of a certain machine set
Figure 72.17 Daily
and monthly team operation time report of a certain machine set
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