What is the use of OR and AND functions in counter based maint plan

[MTerence]

Hi

I want to create a counter based maintenance plan...

I entered the measurement reading for the counter, reading is 4000 hrs

IN IP43

I created the counter plan with cycle as 6000 hrs. Once the document reaches 6000 order will be created. While creating the maintenance plan, in the maintenance schedule parameters, i check there is OR and AND functions avaliable...

I know the basic use of both the functions..

But what is the significance in the maintenance plan....

Will it give any effect, between the schedule date and measurement docu entries...

Since i need to maintain like... once the counter reaches 6000 hrs only order should be created.. it should not create once the date as been reached... since due to present condition, i am not running the DG....

Give ur inputs

- Pithan

[sundar_desai2 · Accepted solution]

Dear Pithan,

AND & OR functionality can be used to consider the different characteristics. i.e. cycle unit e.g. Hrs & Month.

If you use AND, once your equipment reaches both Hrs & Month cycle value then only order will be generated.

If you use OR, either of unit if reaches to cycle value order will be generated.

It does not give any effect on measuring document. Its seperate task.

If you want order to be created only after certain Hrs to be reached to cycle value then you may opt for single cycle or strategy cycle.

Sundar

[MTerence · Accepted solution]

Hi

Thank you for your reply

As you said...

If you want order to be created only after certain Hrs to be reached to cycle value then you may opt for single cycle or strategy cycle

can u explain how to do it...

In single cycle or stratergy... if u schedule the plan itself, the dates will be populated.. it will calculate with respect to the annual reading we have entered in the measurement document...

My DG overhaul to be taken in every 6000 hrs... i create a plan... i have given the annual reading as 8000 hrs... if i schedule the plan for 5 yrs... wat will be the call objects...

Then i am running the DG for 3 hours a day... my annual running hrs will be 1000 hours.. but my order will be released since it has crossed the dates...

how to control... is it possible to do it in IP43 with multiple counter...

How to do this ?

Cna u explain

- Pithan

[seran_k · Accepted solution]

May be I lost the plot. I don't think you need basic explanation of this concept. Any way I try my part.

And/ Or functionalities are useful only if you use more than one counter. If you use only one counter, system will release the order only when the target activity is performed/ reached. System shows schedule based on the frequency of readings recorded. If you record readings in short intervals then sheduled date will come nearer. If you record in long interval the opposite.

[sundar_desai2 · Accepted solution]

Dear Pithan,

While creating Single cycle performance based maintenance plan as you said, you are using annual reading 8000 Hrs where as actually you are running 3 Hrs a day. Actually its contrast.

3 Hrs a day means annual reading reading = 3 Hrs x 30 Days x 12 Months = 1080 Hrs.

If you enter annual reading more than actual annual running, you will get planned dates earlier than what you required & vice versa. Better you always enter a annual reading little lower than actual annual reading i.e. 1080 Hrs.

In this case you will find planned dates with more gaps. But once you enter measurement document which will crosses the cycle value (6000 Hrs) new call will be automatically called.

Try with lesser annual reading & then create meas doc for more than cycle value whether order generates or not.

Sundar

[MTerence · Accepted solution]

Hi

As far as from all the answers.. i am able to conclude...

We should avoid using Counter maintenance plan in single cycle... since we can do it in IP43, using hrs and months...

This is the best solution... if u use single cycle, if u keep the annual reading low... when u schedule it.. it will create only one order...

Ex : annual estimate - 500 hrs

Reading - 700 hrs

In maintenance plan - cycle - 1000 hrs

I entered a Meassurement doc - 1000

Schedule for one yr

If u maintain and schedule like this...the date is 2.5.2010 but it is creating one order....

This is not a best solution...

rather than

we can use IP43 with OR and AND operations.. then it will be flexible...

Am i rite... try to post ur comments

- Pithan

[sundar_desai2 · Accepted solution]

Dear Pithan,

Its not like only one order will get generated. As your annual reading entered is less you are able to see in scheduling (IP10) only one order.

But again once you update meas doc with reading more than cycle value (say 1000 as above) next order will get generated too.

Single cycle plan is used for only one unit (eg. either Operating Hrs or Month) with single maintenance due period (eg. 1000 Hrs or 3 Months)

Try following: Create new meas doc for the same maint plan with differenne in reading more than 1000 Hrs & schedule plan, new order will get generated.

Sundar

[MTerence · Accepted solution]

Hi

Thank you for the inputs

- Pithan

[Former Member]

Hi,

This functionality is used for multiple counter plans and mostly with cycle sets.

Measureent docs created will make cycles applicable for releasing call from ccycle set.And here scheduling parameters And/Or comes into picture.

You can have multiple cycles for object in different units like kms,hours,rotation cycles etc.

With OR if any of condition out of these cycles fulfills a maintenance call is triggered.

But in case of AND all cycle conditions need to be fulfilled then only maintenance call gets triggered.

regds,

atul

[rakesh_mane]

Hi

In Cycle set you define the

Time-based:

A task is to be performed every 1 months. The cycle is therefore 1

months.

Performance-based:

A task is to be performed every 1000 Hrs. The cycle is therefore

1000 Hrs

If in multiple counter plan using above cycle set---

In the case of an OR operation, a maintenance call is due which activity come first i.e. Time-based Or Performance-based.if your measurement document posted regularly it is reached 1000 hrs then maintenance call is due on perfomance based inspite of you plan is not complte the 1 month and Vice-versa

In the case of an AND operation, a maintenance call is only due when all

the maintenance cycles have finished.

Regards,

Rakesh