JPS58205210A - Controller - Google Patents

Abstract

PURPOSE:To find faults on an output converter and a load side in their early stages and to prevent abnormal operation by outputting the drive testing signal and actual driving signal of a load alternately and cyclically, and comparing the testing signal and response signal of the load with each other. CONSTITUTION:A control computing element 2 receives input signals b1-b3 from input converters 1 all the time to perform control operations and supplies output signals c1-c3 to output signal switches 5. The switches 5 receive the output signals c1-c3, and test mode signals e1-e3, test signals f1-f3, and output and test mode signals e1-e3, test signals f1-f3, and output gate signal g1-g3 from a test signal generator and comparator 7 to switch the output signals c1- c3 and test signals f1-f3, obtaining output signals h1-h3. Those output signals h1-h3 are converted by output converters 3 into load signals d1-d3, which are inputted to load signal detectors 6 to be fed back to the test signal generator and comparator 7 as response signals j1-j3. The comparator compares test signals e' with the response signals j1-j3 to output comparison result output gate signals g1-g3 to the output signal switches 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention inputs plant data and performs arithmetic processing according to human data. Generate output signal according to result12
, Technical background of the invention and its rHf5 Point A The conventional control device will be explained based on Figure 1. Seed, output signal is 3f1! ! The conventional control device, which is for the bottle stand of
a (a+, at, as) through human power converter 1
- Data N(i(-=f(fl(bI, b2, bl), f2(bI, b2, bl), f2(
bI , b2 , bs ) fs (bI , bz ,
bl))-) is executed by the control calculator 2, and the output signal c=c(cI+c2,cg)(cl=fl(
bI, bt +b! ') +c2 = f2 (bI
1 b21 bl ) +cS −=fN(bl, b
2. After outputting η: b,), the load 4 is passed through the output converter 3
It is driving the In this type of system, whether or not the load is being driven normally by the control device is based on the following five conditions: In many cases, this is detected only at the point in time when the plant operation is hindered due to malfunction or malfunction of the load, and the plant's operating rate decreases to 11%.
(This is considered one of the major causes below.

OBJECTS OF THE INVENTION The present invention constantly cyclically outputs a load drive test signal 7, and compares the load signal with the test fFT response signal as a response signal to a feed bank (7). As a result, by displaying the location of the kidney abnormality and keeping the output signal OFF at all times to prevent the load from operating abnormally, it is possible to early detect abnormalities on the output converter and load side, and prevent abnormal operation of the &M. SUMMARY OF THE INVENTION The present invention provides a control system that can significantly improve plant operation.The present invention provides a control system that can receive a plurality of input signals through an input converter, and convert it into a human-powered signal station and a control operator. A predetermined control calculation is performed at 'N to drive the nine loads.
) in the controller i that outputs the 17 output signal, generates a test (in other words, test mode 1 word) and outputs it to the output signal switcher, and also outputs the test signal and the response from the load signal detector. A test signal generator/ratio device which outputs a comparison result output gate signal to an output signal switcher Cτ and displays a 7 orthogonal key/yon, and a test signal generator/tt. Receives the test Bir number from ff 6 and the test mode signal, and outputs the output signal switch F unit that switches between the actual drive number 13 of the load and the test f word, and outputs the load operation signal 1-1 response A load signal detector that generates a test signal/outputs it to a comparator at [-] is provided, and the load drive test signal is always cyclically output alternately with the load actual drive signal to detect the load response to the test signal. The location of the outer shrine is displayed as a result of the comparison, and the output signal is always turned off to prevent the load from operating abnormally.
Embodiment of the present invention The configuration of the present invention is shown in FIG. 2, this-actual 7
1! ! With i pull 1? iTo simplify the explanation, input signals are 3
Insertion, three types of output signals, one load for each output signal!
1. It is assumed that the connection is made at number 1.

The controller of the present invention receives the human power signal π:a(al, a2.a3) from the plant, and uses the control calculator #2 to calculate the number b ``' b (''+ +b
2 + "3)", human power converter 1 outputs fl, human power No. 18 b = b (b, , b
2. h, ), a predetermined control calculation is performed, and the output signal τ=c(cl.

C! Control operation W, device 2, and control operation that outputs IC signal?
52 and the test mode signal e=e(e), e2+e3) from the test signal generator/comparator 7.
With test signal = t (t H+ t211R) and output game (signal FZ'''g ($1'+ + g2+ gq
), the output signal @d and the test signal are switched, and the output signal h=h (h, , ,
b2゜b3), and output signal h=h(hl, b2
, b3') is the load signal d=d(d+, d?,
ds) and the load fr4+t
d 14 out, 81% issue +=+ (+, .

Generate/compare test signal as Jz+Jt) 67 tt and output 1] Negative? rr signal detector 6 and 11ζ'l at the operating end of the gate - load 4, test +>n, "no-stop mode signal e is generated 1. When output signal switch 5 is output ( l-ko,
The test signal summer and the response signal j from the load signal detector 6 are L+', and the comparator/spoon output)'-to1 word i is l-j.
, and a test signal generator/comparator that outputs the signal to the signal switch 5 and also indicates a fault.

The action of this nitrogen light is explained using Fig. 2, Fig. 3, Fig. 4 ii2+, Fig. 5, and Fig. 6-J-2), Control 11! Blasphemy 1
'[i52 h, Constant human knife injury: A human power signal is outputted to the TG cutter 5Vc via the converter L. The test ident/mode generator 72 generates test idents in the order of circuits 1 to 3. First, n=n(0,0), (n+
=Q, 11°=n), p=p(o,o), (p+ =
O, l) = O) is output to the test mode output section 75, the test signal output section 76, the test abnormality display section 77, the output gate signal output section 78, and the response signal selection section 71. Test mode output section 75Vi signal rt=n(n,n)fcj
==l +e2 ==Q, 63=Q) is output by 1B, and test signal 1g output section 76 test signal signal n=f (1,0,0), (fl =1, h
= Q, fs = O) and test Nobunaga Q = (f),
ft, +31”=ft t Output tZ・k Here N
+ , h + f315 is a test signal that selects either fI + f2 + 3 depending on i. Output gate IS number stored in unit 73 Output unit 78 Current abnormal heat [assuming 7] 2, g=
Multiply 12 (1, 1, 1) by 11-1. Output signal off 10
(See Figure 3) is the signal e = e (1+ 0, Q
)+Negation=f(1,0,0)12=g(1,1,1), output presence signal c2. c3 is output test signal/signal el
(=h+) generates a load signal d through the output converter 3.The load signal detector 6 (see FIG. 4) detects the load signal d1 in the load signal detector 61, and the signal converter 62 The response signal J""J (J+,
+7.

”3) is output. ,'J2,js lketc2. c3
Response signal corresponding to LFi test signal e! (response signal corresponding to) signal J is input to the response signal selection section 71,
The response signal selection unit 71 selects the signal rl=p(n , +
1') Based on v, the response signal C is selected as 1.1. ,
(1-(J+.

jz , +3)p(0,0)=j+) The response signal/reference signal comparison section 74 compares the signal 1 (=3+) with the test signal I stored in the reference signal storage section 73.
t (=1) and the comparison is L, and the comparison result is output as a comparison error signal m to the test ident/mode generation section 72 and the output gate output section 78 (m-1 if there is a comparison error,
Without m = Q) When m = 1, %'?
= e (1, 0, 0) similar test is performed a specified number of times (
For example, 5 times). If the comparison error occurs a specified number of times (e.g. 3
times) or more, it is considered a circuit abnormality, and the output signal switch 5
The test error display section lights up the error display corresponding to circuit 1. If there is no error or an error display is performed, the test ID/mode is displayed. To check the circuit 2 in the generating section 72, set K from n(0,0) to n(1°0) Ln
=n(1+o)+”'I ==l, n2 =O) +
p=p(1,0), (pI=1,r)t=O
) Lattist mote signal output section 75, test signal output section 7
6. Test abnormality display section 77, output gate Shintan output section 78
Then, it is output to the response 4 signal direct selection unit 71, and the same check as in circuit 1 is performed. ), if the comparison error exceeds a certain number of times, set Fl' = g (0, 0, 1) and move on to checking circuit 3. Test identity/mode generator 72 π = n (0, 1), Output p=p('0.1) and check circuit 3. When the check of circuit 3 is completed, the process returns to the check of circuit 1.

As described above, the circuits 1 to 3 are sequentially and cyclically checked (FIG. 6). In FIG. As a result, it is possible to check the entire operation from the output converter 3 to the operation of the load, and to clarify abnormalities.Advantages of the Invention In the description of the present invention, the output Q3. ! i (3 circuits), but it is necessary to limit it to 31 (3 circuits). In the explanation, it is assumed that the output signal C and the load 4 are connected to 1711, and t is It is not necessary to use 1.7, and it is also suitable if the 71A signal is output in the form of a 1α column signal.
1 It goes without saying that it is possible to do this by multiplying the horsepower signals output in parallel from control 1 and control gate 2 so that the output converter 3 and the load are far apart, as shown in Figure 8. , it goes without saying that it can be applied to the case where there is multiple transmission between the output converters 3. Also, it can be applied to multiple output circuits in one block. It goes without saying that tests can be performed by generating test pattern signals in block units by predetermining addresses and specifying addresses. Or, even if it is configured by a relay sequence, it can be applied to all systems.The above enables early detection of abnormalities on the output converter and load side of the plant control device, prevents abnormal load operation, and greatly increases the plant operating rate. Our goal is to provide control devices that enable improvements.

[Brief explanation of drawings]

Figure 11 is a block diagram showing a conventional control device, Figure 2 is a block diagram showing a control device of the present invention, and Figure 3 is a block diagram showing a conventional control device.
Figure 4 is a block diagram showing the load signal detector, Figure 5 is a block diagram showing the test signal generator/comparator, and Figure 6 is a block diagram showing the load signal switch. and 4. 7 is a block diagram showing the configuration of the present invention when the output signal C from the control calculator is a 5 format signal, and FIG. 8 is a diagram showing the control calculator and output. FIG. 2 is a block diagram showing the configuration of the present invention when multiplex transmission is performed between converters. 1-=-1 input converter 2...llll? '9J
Performance'W, device 3... Output converter 4...
Load 5...Output signal cutter 6...Load 1
Month = 9y output device 7991. Test 1 signal generation/comparator B , , , ) transmic (serial signal) 9.
...Vn-ha (1'11 signal) 10...Demultiplexer 11...Multiplexer

Claims (1)

[Claims] Receive a plurality of input signals via an input converter, and perform predetermined control calculations on the input signals to a certain pressure control calculator 1-1
In a control device that outputs an output signal via an output converter in order to drive a load, when a test signal and a test mode signal are generated and output to an output signal switcher, the test signal and load signal are detected. ← A test signal generator/comparator that outputs the signal to the output signal switch and displays the fault low cage 32, and a test signal generator/comparator that outputs the signal to the output signal switch and displays the fault ≠Receives the empty test signal and the test mode signal, and outputs the actual drive signal of the load, the output signal switcher that switches the test h (g), detects the load operating signal 12, and outputs the response signal and l- A test signal generator/load signal detector for outputting to the comparator is provided, and the load drive test signal is always cyclically outputted alternately with the load actual drive signal, and the load response '$r signal to the test signal is It is characterized by displaying the location of the abnormality point as a result of the comparison, and also by constantly turning off the output signal of the type where the load operates abnormally, which enables early detection of abnormalities on the output converter and the load side. Above, between control devices that can prevent abnormal load operation.