CN107831754A - A kind of instrument fault method for removing for ABS composite material process units - Google Patents
A kind of instrument fault method for removing for ABS composite material process units Download PDFInfo
- Publication number
- CN107831754A CN107831754A CN201711099437.5A CN201711099437A CN107831754A CN 107831754 A CN107831754 A CN 107831754A CN 201711099437 A CN201711099437 A CN 201711099437A CN 107831754 A CN107831754 A CN 107831754A
- Authority
- CN
- China
- Prior art keywords
- instrument
- terminal block
- composite material
- process units
- investigation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
A kind of instrument fault method for removing for ABS composite material process units, whether the field connection case of investigation instrument access breaks down, if, fault restoration is carried out to field connection case, if not, whether the rack terminal block for then investigating instrument access breaks down, if so, fault restoration is carried out to rack terminal block, if not, whether the PLC fasteners for then investigating instrument access damage, if so, the PLC fasteners of damage are changed, if not, investigate whether all instrument break down successively, change the instrument to break down.The present invention can timely and effectively eliminate the instrument fault of ABS composite material process units, ensure that vacuum system is in redundant state, it is ensured that the safety and steady production of ABS composite material process units.
Description
Technical field
The present invention relates to instrument power supply field, more particularly to a kind of instrument fault for ABS composite material process units
Method for removing.
Background technology
ABS composite material process units enters glue pot by raw material tank field collection raw material-pretreatment, raw material first when being produced
Dissolved with together with the block rubber after cutting colloid system, the material after dissolving is then sent into reactor, added additive and carry out
Reaction, reacted product enter devolatilizer and carry out devolatilization, and vacuum system extracts the material not volatilized completely in devolatilizer
To be reacted again, and the material to volatilize completely carries out finished product packing then by after wire drawing pelletizing into blast system.If not yet
There is the purification of vacuum system, then the material that wire drawing pulls out has impurity, can cause fracture, causes buildup in tank, triggers interlocking to stop
Car.ABS composite material process units has two sets of vacuum systems of A, B, is mutually redundant, that is, vacuum system opens one for one, controls
System processed is Siemens S7-400 series of PLC.
If the instrument in vacuum system A breaks down, control system can control the vacuum system A to break down to stop
Work, is switched to vacuum system B and is operated.Now, vacuum system is operated in nonredundancy state, once vacuum system B is also sent out
Raw failure, it will cause whole ABS composite material process units to stop in emergency, cause damage.Therefore, it is necessary to quickly find side by side
Except instrument fault, to ensure the normal operation of ABS composite material process units.
The content of the invention
The present invention provides a kind of instrument fault method for removing for ABS composite material process units, can be timely and effective
Ground eliminates the instrument fault of ABS composite material process units, ensures that vacuum system is in redundant state, it is ensured that ABS composite material
The safety and steady production of process units.
In order to achieve the above object, the present invention provides a kind of instrument fault for ABS composite material process units and excluded
Method, comprise the steps of：
Whether the field connection case of investigation instrument access breaks down, if so, fault restoration is carried out to field connection case, if it is not,
Whether the rack terminal block for then investigating instrument access breaks down, if so, fault restoration is carried out to rack terminal block, if it is not, then
Whether the PLC fasteners of investigation instrument access damage, if so, the PLC fasteners of damage are changed, if it is not, investigating all instrument successively
Whether break down, change the instrument to break down.
The method of described investigation field connection case failure comprises the steps of：
Whether the connecting terminal block in investigation junction box damages；
Whether investigation instrument wiring loosens.
The described method that fault restoration is carried out to field connection case comprises the steps of：
If connecting terminal block damages, connecting terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
The method of described investigation rack terminal block failure comprises the steps of：
Whether the terminal block in investigation rack is damaged；
Whether investigation instrument wiring loosens.
The described method that fault restoration is carried out to rack terminal block comprises the steps of：
If terminal block is damaged, terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
The method whether connecting terminal block in described investigation junction box damages comprises the steps of：
After teardown signal line, arranged at two terminated lines, do not damaged if conducting, the table if not turning on universal meter measurement terminal
Bright damage.
The method whether described investigation instrument wiring loosens specifically comprises the steps of：
The current supply circuit voltage of instrument to be broken down with universal meter detection, if current supply circuit voltage in term of reference,
Illustrate that instrument wiring is normal, if current supply circuit voltage, not in term of reference, account for voltage has fluctuation, instrument wiring is deposited
In interference or instrument wiring loosening.
The present invention can timely and effectively eliminate the instrument fault of ABS composite material process units, ensure at vacuum system
In redundant state, it is ensured that the safety and steady production of ABS composite material process units, be that chemical plant installations " pacify, be steady, long, full, excellent " is raw
The effect of timely escorting is played in production operation.
Brief description of the drawings
Fig. 1 is a kind of flow of instrument fault method for removing for ABS composite material process units provided by the invention
Figure.
Fig. 2 is junction box's wiring schematic diagram of liquid-level switch in embodiment.
Fig. 3 is the schematic diagram that field connection case middle connecting terminal is arranged in embodiment.
Fig. 4 is the wiring schematic diagram of PLC fasteners in embodiment.
Fig. 5 is the wiring schematic diagram of rack terminal block in embodiment.
Embodiment
Below according to Fig. 1~Fig. 5, presently preferred embodiments of the present invention is illustrated.
In ABS composite material process units, the instrument cable in the vacuum system of two sets of redundancies accesses field connection first
Case, then instrument cabinet room is introduced by instrument crane span structure, then rack terminal block is accessed, the PLC fasteners of last access control system.
As shown in figure 1, the present invention provides a kind of instrument fault method for removing for ABS composite material process units, bag
Containing following steps：
Step S0, control system judges whether ABS composite material process units breaks down, if so, carrying out step S1；
Whether the field connection case for step S1, investigating instrument access breaks down, if so, step S2 is carried out, if it is not, carrying out step
S3；
Step S2, fault restoration is carried out to field connection case；
Whether the rack terminal block for step S3, investigating instrument access breaks down, if so, step S4 is carried out, if it is not, carrying out step
S5；
Step S4, fault restoration is carried out to rack terminal block；
Whether the PLC fasteners for step S5, investigating instrument access damage, if so, step S6 is carried out, if it is not, carrying out step S7；
Step S6, the PLC fasteners of damage are changed；
Step S7, investigate whether all instrument break down successively, if so, step S8 is carried out, if it is not, carrying out step S0；
Step S8, the instrument to break down is changed.
Further, in described step S1, the method for investigation field connection case failure comprises the steps of：
Whether connecting terminal block step S1.1, investigated in junction box damages；
Whether step S1.2, investigation instrument wiring loosens.
In described step S2, the method that fault restoration is carried out to field connection case comprises the steps of：
If connecting terminal block damages, connecting terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
In described step S3, the method for investigation rack terminal block failure comprises the steps of：
Whether terminal block step S3.1, investigated in rack is damaged；
Whether step S3.2, investigation instrument wiring loosens.
In described step S4, the method that fault restoration is carried out to rack terminal block comprises the steps of：
If terminal block is damaged, terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
In described step S1.1 and step S3.1, investigate the method whether connecting terminal block in junction box damages and include
Following steps：
After teardown signal line, arranged at two terminated lines, do not damaged if conducting, the table if not turning on universal meter measurement terminal
Bright damage.
In described step S1.2 and step S3.2, the method whether investigation instrument wiring loosens specifically includes following step
Suddenly：
The current supply circuit voltage of the instrument to be broken down with universal meter detection, if current supply circuit voltage instrumentation voltage range
It is interior, then illustrate that instrument power supply circuit connection is normal, if current supply circuit voltage not in instrumentation voltage range, illustrates to supply
Electrical circuit is abnormal, it is understood that there may be interference or instrument wiring loosening etc., such as current supply circuit nearby have high pressure, as electric
220VAC loops, and shielding measure not enough improves that there may be interference, wiring loosening may show as voltage pulsation, electricity shortage
Or no-voltage etc..
In described step S5, if PLC parts breakdowns, police instruction lantern festival shiny red, while PLC core processor
（CPU）With built in diagnostics and external diagnosis function, parts breakdown CPU can prompt red alarm.
The present invention is referred to completely when in face of field instrument troubleshooting, no matter from the independent property of instrument fault or
General character occurs, can be according to the identity order from scene to fastener, that is, from field connection case, line-hit, cabinet-type
The links such as terminal block, fastener, instrument power supply check.
In one embodiment of the invention, ABS composite material process units includes 3 producing lines, the behaviour of PLC control system
Show that all vacuum system A of 3 lines liquid-level switch is all being alarmed on work person's picture, position number is LSH-157001A, LSH- respectively
257001A、LSH-357001A、LSH-157002A、LSH-257002A、LSH-357002A、LSL-157003A、LSL-
257003A、LSL-357003A。
It is preliminary to judge for all liquid-level switches all in the phenomenon of alarm：The possibility that field instrument breaks down simultaneously
Very little, and the possibility to be gone wrong in shared equipment is some larger, it may be possible to field connection case, line-hit, cabinet-type end
Sub- row, fastener, instrument power supply etc..Therefore, the shared equipment of these liquid-level switches is checked one by one.For the failure of single device,
Can be divided into three parts investigation, 1, check field apparatus integrality, if field apparatus damage；2nd, whether circuit is intact, existing
Field junction box, whether cabinet-type terminal block, supply line etc. is short-circuit or opens a way；3rd, whether system fastener alarms.
First, Field Force's butted line case is checked, corresponding junction box is found with drawing according to live circuit, is found
The junction box that the liquid-level switch of 3 lines enters not is same, as shown in Fig. 2 the liquid-level switch of three lines respectively enters three
The junction box of line, then from dividing cable testing bridge to collect to joint current crane span structure.Instrumentation in junction box does not also only have liquid-level switch,
As shown in figure 3, there is other equipment to share connecting terminal block, and the cable of other equipment in addition to liquid-level switch in field connection case
Also by dividing cable testing bridge to enter joint current crane span structure, therefore the first step eliminates field connection case failure and the possibility of line-hit.
Secondly, cabinet room personnel inspection is as follows：1st, PLC I/O fasteners, the power module of system, CPU module, communication mould
The equal normal operation such as block, interface module, alarm lamp are not all alarmed；2nd, the PLC cards according to where drawing finds liquid-level switch
Part position, it is found that these liquid-level switches are entered is not same PLC fasteners.As shown in figure 4,1# lines, the liquid-level switch of 2# lines
Positioned at 110U5 fasteners, the liquid-level switch of 3# lines is located at 110U6 fasteners, therefore second step eliminates PLC fasteners and broken down
Possibility.If PLC parts breakdowns, needing to change, PLC fasteners can the hot plug under conditions of redundancy, and need to carry out in advance pre-
Case.
Then, rack terminal block is reexamined：1st, the rack terminal block according to where drawing finds liquid-level switch；2nd, this is checked
The general character of a little terminal blocks, find to only have liquid-level switch used before in after three row's terminals, and other equipment only connect before in two rows
Terminal；3rd, by compared with drawing and with scene confirm, in discovery row for common terminal arrange, it is preceding in two rows be analog signalses it is defeated
Entry loop, and in after two rows be liquid-level switch current supply circuit；4th, because the terminal block adjacent with liquid-level switch is connected to other time
Road, and it is working properly, it may be said that two row's terminal blocks are working properly in before bright, check heel row terminal block emphatically, if terminal troubleshooting
Barrier, then need to change terminal block；5th, the liquid levels such as LSH-157001A, LSH-257001A, LSH-357001A are measured with universal meter to open
The current supply circuit voltage of pass, as shown in figure 5, it is 16VDC to measure average voltage, and has fluctuation, scope is about
11.5VDC-18VDC；6th, reference level switch supply voltage be 12VDC-24VDC, it can be found that actual power voltage have it is small
In the possibility with reference to supply voltage, therefore the reason for producing voltage pulsation must be found first；7th, it is probably the reason for voltage pulsation
The problem of there is problem in power supply, either disturb or wiring loosening in itself, and inspection above has eliminated interference, and power supply
Also not only only powered to liquid-level switch, therefore check whether circuit loosens emphatically；8th, upon examination it is found that, as shown in figure 5, with connecing
Ground wire（Thus much one）Corresponding No. 1 terminal block base of right side heel row has a connection sheet, and No. 1 terminal position not wiring, and locks
Tight bolt is not tightened, and is half vacant state, is caused all negative terminal virtual earth of liquid-level switch, make in the case of loose contact
Voltage just hovered above and below the operating voltage of liquid-level switch, so just occur sometimes can normal work, sometimes collective report
Alert situation.Voltage recovers normal after tightening nut, liquid-level switch whole normal work.
According to fault handling method provided by the invention, the liquid-level switch that vacuum system A is eliminated within the very first time is electric
Source failure, ensure that two sets of vacuum systems of A, B are in redundant state, it is ensured that the safety and steady production of ABS composite material process units,
" pacify, steady, long, full, excellent " production run for chemical plant installations and play the effect of timely escorting.
The instrumentation of ABS composite material process units is in addition to liquid-level switch, also comprising flowmeter, liquid level gauge, pressure
Power transmitter, thermometer, valve, rotational speed meters, vialog, oxygen analyzer, gas alarm instrument etc..General three-wire system and four-wire system
（And need outer power supply source）Instrument can be fixed a breakdown using fault handling method provided by the invention, two-wire system（Without outer
Power supply）The malfunction elimination of instrument can be in this approach as reference.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (7)
1. a kind of instrument fault method for removing for ABS composite material process units, it is characterised in that comprise the steps of：
Whether the field connection case of investigation instrument access breaks down, if so, fault restoration is carried out to field connection case, if it is not,
Whether the rack terminal block for then investigating instrument access breaks down, if so, fault restoration is carried out to rack terminal block, if it is not, then
Whether the PLC fasteners of investigation instrument access damage, if so, the PLC fasteners of damage are changed, if it is not, investigating all instrument successively
Whether break down, change the instrument to break down.
2. it is used for the instrument fault method for removing of ABS composite material process units as claimed in claim 1, it is characterised in that
The method of described investigation field connection case failure comprises the steps of：
Whether the connecting terminal block in investigation junction box damages；
Whether investigation instrument wiring loosens.
3. it is used for the instrument fault method for removing of ABS composite material process units as claimed in claim 2, it is characterised in that
The described method that fault restoration is carried out to field connection case comprises the steps of：
If connecting terminal block damages, connecting terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
4. it is used for the instrument fault method for removing of ABS composite material process units as claimed in claim 1, it is characterised in that
The method of described investigation rack terminal block failure comprises the steps of：
Whether the terminal block in investigation rack is damaged；
Whether investigation instrument wiring loosens.
5. it is used for the instrument fault method for removing of ABS composite material process units as claimed in claim 4, it is characterised in that
The described method that fault restoration is carried out to rack terminal block comprises the steps of：
If terminal block is damaged, terminal block is changed；
If instrument wiring loosening, instrument wiring is fastened.
6. the instrument fault method for removing for ABS composite material process units as described in claim 3 or 5, its feature exist
In the method whether connecting terminal block in described investigation junction box damages comprises the steps of：
After teardown signal line, arranged at two terminated lines, do not damaged if conducting, the table if not turning on universal meter measurement terminal
Bright damage.
7. the instrument fault method for removing for ABS composite material process units as described in claim 3 or 5, its feature exist
In the method whether described investigation instrument wiring loosens specifically comprises the steps of：
The current supply circuit voltage of instrument to be broken down with universal meter detection, if current supply circuit voltage in term of reference,
Illustrate that instrument wiring is normal, if current supply circuit voltage, not in term of reference, account for voltage has fluctuation, instrument wiring is deposited
In interference or instrument wiring loosening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099437.5A CN107831754A (en) | 2017-11-09 | 2017-11-09 | A kind of instrument fault method for removing for ABS composite material process units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711099437.5A CN107831754A (en) | 2017-11-09 | 2017-11-09 | A kind of instrument fault method for removing for ABS composite material process units |
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| CN107831754A true CN107831754A (en) | 2018-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711099437.5A Pending CN107831754A (en) | 2017-11-09 | 2017-11-09 | A kind of instrument fault method for removing for ABS composite material process units |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108845566A (en) * | 2018-09-06 | 2018-11-20 | 易思维（杭州）科技有限公司 | The trouble hunting method of industry control machine control system |
| CN110108927A (en) * | 2019-04-17 | 2019-08-09 | 中国船舶重工集团公司第七O三研究所无锡分部 | A kind of gas turbine switching value feedback malfunction elimination method |
| CN110108926A (en) * | 2019-04-17 | 2019-08-09 | 中国船舶重工集团公司第七O三研究所无锡分部 | A kind of gas turbine switching value instruction malfunction elimination method |
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| CN108845566A (en) * | 2018-09-06 | 2018-11-20 | 易思维（杭州）科技有限公司 | The trouble hunting method of industry control machine control system |
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Application publication date: 20180323 |