Maintenance Technology July 2017 - 30

SAP TIPS AND TRICKS

Understand Shift Factors
And Tolerances
Kristina Gordon, DuPont

Q  

My recent article, "Maintenance Plans: What
do all the fields mean?" (May 2017, p. 30),
generated two very good questions from
reader Nigel Wilson, who wants to further
understand how a maintenance plan functions. Here are answers to those questions.

A 

What is the relationship (if any) between shift
factors and tolerances? Are they used in
conjunction with each other or separately?

Shift factors and tolerances can be used in conjunction with each other or they can be used separately.
The screen shots illustrate how this is accomplished.
Tolerance defines late or early completion time period
and the impact it has on the plan schedule: (+) tolerance
is set for late completions and (-) tolerance is set for early
completions.
The shift factor is the percentage of shift that a plan can
move if not completed on time. For example, if a maintenance plan is due Sept. 1, but the work is not confirmed
until Sept. 5, the shift factor will determine the next plan
due date. A100% shift on a monthly plan will move the due
date to the exact day in the next month that the work was
confirmed in September (in this case, Oct. 5). A 0% shift
will not allow the plan to move the due date. The order was
completed Sept. 5, but the due date is on the first of every
month, therefore, the next due date will be Oct. 1.
To use the shift factor and tolerance together, the
principals are still the same. However, you are now taking
the percentage of the shift factor into account with the
completion from the tolerance. The images (left) illustrate
how the plan change date changes with a 100% shift factor
and doesn't change with a 0% shift factor.

Q  

A 

How do shift factors and tolerances handle
multiple cycles on a maintenance plan?

Tolerances and shift factors react the same in
single-cycle and strategy plans. Settings should be
set at the strategy level, then they will carry over to each
individual maintenance plan when it is created. To avoid
this situation, you may also want to maintain hierarchies in
the maintenance strategy against each pack, if you haven't
already done so. MT

Kristina Gordon is SAP PM Leader, DuPont Protective Solutions Business and SAP WMP Champion, Spruance Site, Richmond,
VA. If you have SAP questions, send them to editors@maintenancetechnology.com and we'll forward them to Kristina.

30 |

MAINTENANCE TECHNOLOGY

JULY 2017



Table of Contents for the Digital Edition of Maintenance Technology July 2017

Editorial
Uptime
On The Floor
Powering Auto Production
Following The North Star
Flying Inspections
Untangle Compressed Air Misconceptions
Change Your Lubrication Mindset
HMI-Design Essentials For Today's SCADA Systems
SAP: Tips and Tricks
Cybersecurity Best Practices
Bearing Storage
Interpreting IP Code
Noisy Pumps
Move From Time- to Condition-Based Lubrication
CMMS Energizes Maintenance Efforts
Products
Ad Index
Showcase
Final Thought
Maintenance Technology July 2017 - 1
Maintenance Technology July 2017 - Cover1
Maintenance Technology July 2017 - Cover2
Maintenance Technology July 2017 - 1
Maintenance Technology July 2017 - 2
Maintenance Technology July 2017 - 3
Maintenance Technology July 2017 - Editorial
Maintenance Technology July 2017 - 5
Maintenance Technology July 2017 - Uptime
Maintenance Technology July 2017 - 7
Maintenance Technology July 2017 - On The Floor
Maintenance Technology July 2017 - 9
Maintenance Technology July 2017 - Powering Auto Production
Maintenance Technology July 2017 - 11
Maintenance Technology July 2017 - 12
Maintenance Technology July 2017 - 13
Maintenance Technology July 2017 - 14
Maintenance Technology July 2017 - Following The North Star
Maintenance Technology July 2017 - 16
Maintenance Technology July 2017 - 17
Maintenance Technology July 2017 - Flying Inspections
Maintenance Technology July 2017 - 19
Maintenance Technology July 2017 - 20
Maintenance Technology July 2017 - 21
Maintenance Technology July 2017 - Untangle Compressed Air Misconceptions
Maintenance Technology July 2017 - 23
Maintenance Technology July 2017 - 24
Maintenance Technology July 2017 - Change Your Lubrication Mindset
Maintenance Technology July 2017 - 26
Maintenance Technology July 2017 - HMI-Design Essentials For Today's SCADA Systems
Maintenance Technology July 2017 - 28
Maintenance Technology July 2017 - 29
Maintenance Technology July 2017 - SAP: Tips and Tricks
Maintenance Technology July 2017 - Cybersecurity Best Practices
Maintenance Technology July 2017 - Bearing Storage
Maintenance Technology July 2017 - Interpreting IP Code
Maintenance Technology July 2017 - Noisy Pumps
Maintenance Technology July 2017 - Move From Time- to Condition-Based Lubrication
Maintenance Technology July 2017 - 36
Maintenance Technology July 2017 - 37
Maintenance Technology July 2017 - 38
Maintenance Technology July 2017 - CMMS Energizes Maintenance Efforts
Maintenance Technology July 2017 - 40
Maintenance Technology July 2017 - 41
Maintenance Technology July 2017 - Products
Maintenance Technology July 2017 - 43
Maintenance Technology July 2017 - 44
Maintenance Technology July 2017 - 45
Maintenance Technology July 2017 - Ad Index
Maintenance Technology July 2017 - Showcase
Maintenance Technology July 2017 - Final Thought
Maintenance Technology July 2017 - Cover3
Maintenance Technology July 2017 - Cover4
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