Event has not generated in OS 520 ABB and configured in AC 450 Through AC 160 Through AF 100.

We have 156MW Plant at Hazira,surat,Gujarat.

Our DCS

ABB

Main controller AC450 and protection controller AC160 Used.

Problem Event not generated from Protection processor-2.We have total Three protection channel.

As per our analysis Event Set(Transit) Data base shows Warring 1 in the block so how to remove this Warning in the block.

Please give answers as early as possible.

Thanks.

Please find the attachment for further comment.

event problem_ac450.doc

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sanjayshah Rank: 981

Asked 6 years ago

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Hi!

A little more information, but still far from the whole "map" needed!

I'm not an expert on the AC160 but i believe that diagnostics can be found under Target\diagnostics...

Only four event sets, so probably not an overflow. Check that all referenced DIC:s are available and activated (ACT=1)

In the receiveing end, any system messages? The attachment only shows offline snapshots, what about snapshots from ONB? Again check (online) that all DIEV:s are available and activated. This means check each and every reference with MDB-command in ONB.

In both ends, check that the number of DIC/AIC equals the number of DIEV/AIEV. Also check that each and every reference is of the correct type.

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by sanjayshah Rank: 981 on 12/9/2013 11:49:00 PM | Like (0) | Report

Thanks for your valuable reply.

We have gone through and observed that all 04 nos of EVS block related to AC160 (P2 Processor) are showing warning status (1) in Online Builder mode..and every time it comes automatically after EVS ACT pin 0/1.

we have also checked all the configured Signals at both end EVS Blocks and found matched so, you have any another idea why this NODE (AC450) side EVS block is showing continuous warning ..
pls suggest if any.. also we have gone through following activities and found observations ..this is for your reference,

View DB element in AC160 processor and we have found that respective EVS_Output terminals as below,
Q_EMPTY 0
CLEAR_Q 0
WARNING 1
ERR 1
ERRTYPE 48

For your knowledge, we have here total 04 nos of EVS configured for transferring digital events (DIEVs) between AC160 (P2 Processor) and AC450 Node..
From this 04 nos of EVS Block, 03 nos of EVS Block is showing same data in AC160 side as mentioned above (Q_EMPTY,CLEAR_Q,WARNING,ERR,ERRTYPE)
BUT, remaining 01 no EVS block is showing below data,
Q_EMPTY 1
CLEAR_Q 0
WARNING 0
ERR 0
ERRTYPE 0

AS per the above reference of 04th one (EVS) we have simulated event in AC160 but same result was found as we got during simulation with other 03 nos EVS block...

so, can you have any idea about How to clear the said Error,Errtype,Warning shown in EVS Block at AC160..

Have you any idea..what this ERRTYPE : 48 indicates and what action is suggested.

Your reply is highly appreciable and make us to resolve our problem.

by MyMe Rank: 12348 on 12/9/2013 11:57:20 PM | Like (0) | Report

ERRTYPE 48 indicates two errors.

1: Event queue filled to 80% or more for one or more event targets
2: Event queue overflow for one or more targets

Conclusion:
You have an overflow in the receiveing end

How many EVS in the AC450, and how many events in total?

by sanjayshah Rank: 981 on 12/11/2013 1:53:18 AM | Like (0) | Report

Hi,

In AC450 node following configuration at our site,
Total EVS : 38 NOS having 32 channel each,
Total Used Channels : 848 out of 1216

by MyMe Rank: 12348 on 12/11/2013 7:10:17 AM | Like (0) | Report

I know I have asked this before, but I do not feel that i have gotten any answer. Are there no system alarms in the AC450? In case of an event burst, I am pretty sure that system alarms should appear in the ONB system alarm log.

I would really like to help you out, but it is very important that you answer all my questions.

You should also have an indication on the DB element in the AC450. What does that element read?

I am trying to find out in what end the problem lies, and in order to do that I must have all available information.

No messages in AC160?
(Target\Diagnostics\Target\Report errors)

by sanjayshah Rank: 981 on 12/12/2013 1:24:22 AM | Like (0) | Report

No messages found in AC160. How to see system alarm in AC450.Which DB Element to see in AC450 ?

by MyMe Rank: 12348 on 12/12/2013 1:36:14 AM | Like (0) | Report

From ONB, Menu;: View\System Message Log

Here there is also an option under Options\Setup where you can activate system messages to be written to screen and log. This can be useful if you are sitting and waiting for a system alarm to appear.

Corresponding DB element is of type EVS(R), which one of them it is, you must find out by comparing the settings for S_BUS, S_STN, S_POS and S_IDENT. Theese settings must correspond with the settings of EVS and AF100 in AC160.

by sanjayshah Rank: 981 on 1/8/2014 11:42:13 PM | Like (0) | Report

HI,
As you know that DB element in AC160 processor and we have found that respective EVS_Output terminals as below,
Q_EMPTY 0
CLEAR_Q 0
WARNING 1
ERR 1
ERRTYPE 48
After reprogramming the application EVS Terminal output shows following.
Q_EMPTY 0
CLEAR_Q 0
WARNING 0
ERR 0
ERRTYPE 0

Please suggest action.
Thanks
Sanjay

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MyMe Rank: 12348

Answered 6 years ago

Answers

Hello,

to see DB terminal status or value on AC160 controller do as follow:

1. Connect you FCB to appropriate AC160 node (directly via RS232 port or via AF100 Network)

2. In the menu select: Window>Test Table or just press Alt+4

3. Press button Create/Edit

4. In the pop up window insert DB element name starting with "="

5. Select Terminal from pull down menu

6. Select for display (selected by default)

7. Once you have done all mentioned above choose Single, Cyclic or Recording option for displaying DB terminal value

Regards,

Comments (6) New comment

by sanjayshah Rank: 981 on 12/9/2013 11:51:55 PM | Like (0) | Report

Thank you for your valuable reply and as per your guided method we have gone through for View DB element in AC160 processor and we have found that respective EVS_Output terminals as below,
Q_EMPTY 0
CLEAR_Q 0
WARNING 1
ERR 1
ERRTYPE 48

For your knowledge, we have here total 04 nos of EVS configured for transferring digital events (DIEVs) between AC160 (P2 Processor) and AC450 Node..
From this 04 nos of EVS Block, 03 nos of EVS Block is showing same data in AC160 side as mentioned above (Q_EMPTY,CLEAR_Q,WARNING,ERR,ERRTYPE)
BUT, remaining 01 no EVS block is showing below data,
Q_EMPTY 1
CLEAR_Q 0
WARNING 0
ERR 0
ERRTYPE 0

AS per the above reference of 04th one (EVS) we have simulated event in AC160 but same result was found as we got during simulation with other 03 nos EVS block...

so, can you have any idea about How to clear the said Error,Errtype,Warning shown in EVS Block at AC160..

Have you any idea..what this ERRTYPE : 48 indicates and what action is suggested.

Your reply is highly appreciable and make us to resolve our problem.

by dsam Rank: 1707 on 12/10/2013 2:07:41 AM | Like (0) | Report

Seems that event queue on EVS (AC160) side could be cleared.
Try to force CLEAR_Q terminal from FCB using similar method I explained for displaying values. If it is not possible with forcing value, then this terminal should be connected in PC program in order to force clearing flag.
On the AC450 side in On-line Builder do as follow:
1. Connect On-line Builder to appropriate node
2. Write ANPER <enter>
3. Write 3 (Channel Utilization)<enter>
4. Write 1 (Activate)<enter>
- After approx. 10 min
5. Write 2 (Deactivate)<enter>
6. Write 1 (Display the Channel Utilization in a Table)<enter>
7. Write A
- Channel table will be shown
- Check if any number in FULL EVENTS column differ from 0, if so send me its corresponding Channel Name

Good luck!

by sanjayshah Rank: 981 on 12/11/2013 2:01:17 AM | Like (0) | Report

Hi,
as per your suggested command to check the Analyze parameter in AC450, we have checked and found that there is no any deviation found in FULL EVENTS column (i.e. all values are 0)...

We have also tried to clear_q pin by forcing but it could not possible to force for this terminal...

One more thing, you have mentioned another option if not possible forcing..but that sentence is not understanding by us so kindly guide us how to connect that clear_q pin to PC Program and can force.

Thanx & Regards

by dsam Rank: 1707 on 12/12/2013 3:37:57 AM | Like (0) | Report

The sentence where I mentioned forcing DB terminal from PC program was intentionally left unclear because it is risky to do online changes on running machine if you are not sure what you are doing. Some steps could be skipped in the procedure that could cause machine trip that I want to avoid.
Could you send us source code (*.aax & *.bax files) for all nodes (AC450 & AC160 side) on the network. This could help to check whether configuration is OK. If problem happened recently and plant was running without any problem for years and if no modifications have been done then configuration should be OK. Problem should lay somewhere else i.e. lost AC160 node on the network.
When did this problem happen? AC160 node has lost contact with network AF100? Check system alarm list for any system alarm related to AC160 node (Protection channel 2)
Regards

by sanjayshah Rank: 981 on 12/12/2013 11:41:10 PM | Like (0) | Report

HI,
Actually Machine was running and tripped on temperature that time alarm has not came then only we start to find the reason so actually we did not of problem start to occur.
Please find the configuration of our plant. We have two gas turbine, two HRSG & one steam turbine.
Plant Node
Gas turbine1 - 15
Gas turbine2 - 16
HRSG1 - 17
HRSG2 - 18
Steam Turbine -19
BOP - 20
Our problem in GT2 i.e. node 16 that configuration is CLC (Close loop controller), OLC1 (Open loop controller1), OLC2 (Open loop controller2 connect INSUM), three protection processor. From above all controller signal came to node through individual processor through AF100.
Total EVS is 38 nos.
Separate like this way.
CLC – 6Nos (1EVS=32 Channel)
OLC1-18 Nos (1EVS=32 Channel)
P1 – 3 Nos (1EVS=32 Channel)
P2 – 4 Nos (1EVS=32 Channel)
P3 – 6 Nos (1EVS=32 Channel)
OLC2-01 Nos (1EVS=32 Channel)
As above events are generated from CLC, OLC1, OLC2, P1 & P3.
Plant also running in this configuration and working OK.

by sanjayshah Rank: 981 on 1/8/2014 11:31:59 PM | Like (0) | Report

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dsam Rank: 1707

Answered 6 years ago

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Event has not generated in OS 520 ABB and configured in AC 450 Through AC 160 Through AF 100.

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