NME17-01DSTT Setup and AdjustmentPage 1

Introduction

CONTENT

/ METHODS & ACTIVITIES
I.Motivation
The controlling parameters have been adjusted, but occasionally something doesn’t work. What parameter needs to be adjusted? By how much? We will address some of these today. / Focus student attention on “What’s In It For Me”.
II.Course Introduction
A.Course Objective
With a malfunction in DSTT operation, the Maintenance Mechanic will use technical guides and troubleshoot and set up the DSTT for proper operation as demonstrated by completion of Lab Practical Evaluation.
/ Read and/or discuss the course terminal objective
B.Schedule
1.Basics of how to set up the DSTT using a written plan
2.Which parameters control each step of the DSTT operation
3.Potential concerns that have been identified and how to correct them
4.Practical evaluation on adjusting a malfunction / Identify the schedule for the training
C.Qualification
Qualified to perform troubleshooting and setup of the DSTT / Identify what they will be qualified to perform when completed with this course
III.Safety and Prevent Events
A.Building Postings pointed out
B.Safety on elevated work platform
1.Safety chain kept up
2.Tools and equipment not placed where they could fall below
C.3-leg communication
1.Ensure hands are not in equipment when initiating actions
2.Ensure verification is complete before performing acts that could damage equipment
D.Recommend gloves whenever handling stud or wrenches
E.Perform a formal brief again before releasing everyone to practice
IV.Lesson Introduction / Introduce the lesson material
Lesson Enabling Objectives
/ Read and/or discuss the lesson objectives
EO01Set up the DSTT parameters
EO02Identify controlling parameters for DSTT operations
EO03Identify potential operational concerns and adjust parameters to correct them

EO01Set up the DSTT parameters

CONTENT

/ METHODS & ACTIVITIES
I.Chart / Refer to chart and ensure all terms are understood
A.Depth
1.Indicated display numbers
a.Are shown on the screen
b.Zero is the approximate “home” position
c.They are adjustable as a group
2.Relative numbers
a.Do not show on the screen
b.Are the difference between what is shown and the reference location
c.Reference location is set when the tool sets on the stud and engages the stud
d.Only individual parameters are adjustable
3.Offset Near and Offset Far
a.Sets the “Bias” signal, adjusting the displayed depth measurement
b.This is the only depth parameter that is individually adjustable (near and far tool)
c.Used to compensate for variations in depth at a measurement reference location
4.Home – Must be less that this number for Auto function to start
5.Stud Max – Absolute maximum depth
a.Shuts off some functions when passed
b.Can still go lower in manual
6.Open/Close Latch – Must be less than this number for auto function – message to Open/Close latch
7.In Latch – must be greater than this number for auto disengage function
8.Latch Missed – After unlatching, must pass this number to tell the tool that you are out of the latch / Could note that between this and the following parameter in auto, the stud will raise/lower in a fast mode
9.Above Thread – Prevents turning stud in auto unless lower in elevation than this relativenumber
10.Fast Start – Changes from slow to fast mode and fast to slow in auto when past this relative number, both up and down
11.Found Head – Stops tool rotation when it drops this far after sensor rod touches the stud
12.Search Head Low – In auto, does not allow to turn backwards to search for triangle or drop onto 1st thread until greater than this number
13.Start Slow Diff – Changes from fast to slow or slow to fast when within this distance from the bottom position
a.Only when going down, fast to slow, in auto
b.Works both ways, up and down, either fast to slow or slow to fast in manual
14.Final Position Auto – bottom position in auto – stops threading in when past this relative number
15.Manual Slow – changes from fast to slow or slow to fast when this distance is passed in manual, both up and down
16.Max Depth – bottom position in manual - stops threading in when past this number
B.Speed/Torque
1.Speed is listed 1st and torque second for each parameter
2.Search CW – Not used
3.Search CCW – When tool is turning to find stud triangle to drop onto studand for finding 1st thread when inserting stud
4.Remove Fast – When removing stud in the fast region of travel in auto (Between relative positions, Final Position Auto and Fast Start)
5.Insert Fast –When inserting stud within the fast region of travel in auto (Between relative positions, Fast Start and Final Position Auto plus Start Slow diff)
6.Thread Out – When removing stud in the auto mode slow regions
7.Thread In – When inserting stud in the auto mode slow regions
8.High torque – When first removing stud until movement of Start Slow Dif occurs
9.Final – When inserting studs in auto in the bottom slow region
10.Manual Slow – When inserting or removing studs in manual above position Manual Slow and within Start Slow Diff of Max Depth
11.Manual Fast – When inserting or removing studs in manual – Between positions Max Depth plus Start Slow Diff and Manual Slow
C.Timeout
1.Lift/Lower – Time allowed for lowering tool to the stud or raising tool from the stud
2.Search – Time allowed between sensor rod touching and dropping the Found Head distance –tool is turning to drop onto stud
3.Lift to Repeat – After lifting, time allowed to repeat the Search function
4.Lower to Engage – Time from completing the Search function or reaching Final Position Autountil upper proximity probe indicates tool fully down on the stud
5.Check to Disengage – After tool disengaged light comes on, this is the time allowed for the sensor rod to come off the stud
6.Lift to Latch – Time for tool to go above the “Latch/Unlatch” position after engaging stud during installation or passing the “Above Thread” depth during removal operations
7.Lower to Thread – After unlatching and pressing the Start button, the time until below the “Above Thread” position
8.Wait on Thread – After stopping on the threads (below “Above thread”) the time until the stud drops past the first thread while turning CCW
9.Install/Remove – After it begins turning until it reaches the bottom (install) or “Above Thread” (remove)
10.Tool Stalled – No rotation of the motor for this time
11.Latch Missed–Time for the tool to go below the Latch Missed position after unlatching and pressing Start
D.Pressure
1.Individual Parameters
a.Each tool (near and far) is individually adjusted
b.Manual pressure regulators are in the lower cabinet on the opposite side
c.You are setting the electronically regulated pressure under the piston
d.Shown in millibars (thousandths of an atmosphere) About 15 psi/bar
2.Up, No Stud – Pressure to raise tool only – no stud – in manual operation only
3.Down, No Stud – Pressure to allow tool to lower – no stud
a.Downward force is gravity and pressure regulator inside the cabinet
b.Parameter set is opposing the downward forces
4.Up, With Stud – Pressure to raise tool and stud together
5.Down, With Stud – Pressure to allow the tool and stud to lower with gravity forces only
6.Turning Compensation – Pressure to support the weight of the tool and stud without allowing movement
II.Setting the Parameters / At the DSTT panel, demonstrate setting the pressure parameters while describing how
A.Initial setup / Prevent Events: Self-checking to prevent entering the wrong value or entering it in the wrong place
1.Press the general parameter category button to be entered
2.Wait for the password screen to come up fully
3.Enter the password then press Enter
4.Press the parameter category button again
B.Entering parameters
1.Cursor down and up to the parameter
2.Enter the new value and press Enter
3.If a mistake is made, press Escape to reset
4.When finished entering all parameters, press Escape
C.Adjusting pressure parameters
1.These can vary depending on O-ring resistance and manual regulator setpoints, so they will be the most commonly adjusted parameters
a.Each should be set under appropriate conditions to perform their function
b.Place the DSTT in manual to perform the operations / Self-Check to ensure it is in manual
2.Down, No Stud
a.Press Lower Tool button
b.Raise pressure until tool will not go down
c.Lower pressure setpoint by 50 millibarincrements until the tool lowers smoothly
d.Too low a pressure and the tool will turn the stud when searching for the triangle and “bang” down when found / Point out significance of range, low and high
3.Up, No Stud
a.Press Lift Tool button
b.Raise pressure until the tool lifts smoothly – 200-300 millibars extra doesn’t hurt anything / Point out significance of range low, no significance of high
c.Pressure should not be high enough to lift stud, otherwise it is not critical
4.Up, With Stud
a.With stud engaged, press Weight Comp On/Off to turn on Weight Compensation
b.Press Lift Tool button
c.Raise pressure until tool with stud lifts smoothly – 100-200 millibars extra doesn’t hurt anything / Point out significance of range, low and high
d.Too high a pressure can damage the first thread when removing
5.Down, With Stud
a.With stud engaged, press Weight Comp On/Off to turn on Weight Compensation
b.Press Lower Tool button
c.Lower pressure until tool with stud goes down smoothly – 100-200 millibars extra doesn’t hurt anything / Point out significance of range, low and high
d.Too low a pressure can cause the stud to drop hard past the 1st thread
e.Too high a pressure can prevent the stud from dropping into the 1st thread
f.NOTE: This parameter is also used to remove the tool from the stud in auto – if pressure is too low the tool will not come off the stud
6.Turning Compensation
a.With stud engaged, press Weight Comp On/Off to turn on Weight Compensation
b.Lift or lower the stud to suspend it and press the Weight Comp On/Off to stop the movement.
c.Press the Weight Comp On/Off again with no Lift or Lower function
d.If tool and stud move, raise or lower the setpoint to stop the movement
e.Ideally, raise pressure setpoint just enough to initiate upward movement, lower it just enough to initiate downward movement, then set the pressure between those two
Repeat the demonstration if some were not able to see

EO02Identify controlling parameters for DSTT operations

CONTENT

/ METHODS & ACTIVITIES
I.For Stud Removal / Discuss automatic operation and what parameter starts and stops each phase of the operation (numbers on the chart are for general reference only)
A.Push Start – Tool lowers to stud
1.Pressure – Down, No Stud
2.Time limit – Lift/Lower
3.Destination – Sensor rod activates lower proximity ring when below the Search Head Low position
4.Also releases the X-Y slide
B.Tool rotates to align triangles
1.Pressure – Down, No Stud
2.Time limits – Search and Lift to Repeat
3.Torque/Speed – Search CCW
4.Destination – Drops by Found Head amount
C.Tool stops turning and finishes dropping
1.Pressure – Down, No Stud
2.Depth is not a factor
3.Time limit – Lower to Engage
4.Destination – Sensor rod upper proximity probe activated indicating tool is fully down on the stud
5.Relative zero position determined
a.Zero position is when setting in the latch
b.Zero is assumed here to be at Final Position Auto higher than current tool position
D.Engage stud
1.Pressure – Down, No Stud
2.Depth and time are not factors
3.Stud engaged proximity probe lights
E.Begin Stud Removal
1.Pressure – Turning Compensation
2.Time – Install/Remove
3.Torque/Speed – High Torque
4.Destination – Start Slow Dif distance movement
F.Remove stud, Fast mode
1.Pressure – Turning Compensation
2.Time – Still part of Install/Remove
3.Torque/Speed – Remove Fast
4.Destination – Above Fast Start position
G.Complete removal, Slow mode
1.Pressure – Up, With Stud
2.Time – Still part of Install/Remove
3.Torque/Speed – Thread Out
4.Destination – Above the Above Thread Setpoint
H.Continues up to the Locking Latch
1.Pressure – Up, With Stud – Locks in existing air when it reaches the destination
2.Time – Lift to Latch
3.Torque/Speed – Stops turning – Off
4.Destination – Higher than Open/Close Latch
5.Message to close the latch appears / Prevent Events: 3-leg Communicationor Visual Confirmation to prevent injury
I.Push start to lower into latch
1.Pressure – Down, With Stud
2.Destination – Below In Latch
3.Message appears to verify if safely in latch / Prevent Events: 3-leg Communication to prevent equipment damage
J.Push start to disengage tool from stud
1.Pressure – Down, No Stud
2.Depth – Must be below In Latch
3.Time – Lower to Engage
4.Sensor rod upper ring Proximity probe indicates tool fully down on stud
K.Push start to disengage tool from stud
1.Pressure – Down, No Stud
2.Depth – Must be below In Latch
3.Time – Not a factor
4.Stud Disengaged proximity probe indicates tool disengaged from stud
L.Lift off the Stud
1.Pressure – Down, With Stud
2.Time – Check to Disengage
3.Destination – Sensor Rod proximity probe indicates tool is clear of stud
M.Return to ‘Home’ position
1.Pressure – Full pressure (not adjustable)
2.Time – Lift/Lower
3.Destination – Home
II.For Stud Insertion
A.Push Start – Tool lowers to stud
1.Pressure – Down, No Stud
2.Time limit – Lift/Lower
3.Destination – Sensor rod activates lower proximity ring
4.Also releases the X-Y slide
B.Tool rotates to align triangles
1.Pressure – Down, No Stud
2.Time limits – Search and Lift to Repeat
3.Torque/Speed – Search CCW
4.Destination – Drops by Found Head amount
C.Tool stops turning and finishes dropping
1.Pressure – Down, No Stud
2.Depth – Below In Latch
3.Destination – Sensor rod upper proximity probe activated indicating tool is fully down on the stud
4.Relative zero position is set
D.Engage stud
1.Pressure – Down, No Stud
2.Depth – Below In Latch
3.Stud engaged proximity probe lights
E.Lift stud to release latch
1.Pressure – Up, With Stud– Pressure locks in when Open/Close Latch position is passed
2.Depth – Above Open/Close Latch
3.Message on screen to Open Latch / Prevent Events: 3-leg Communicationor Visual Confirmationto prevent injury
F.Push start to lower stud
1.Destination and Time 1 – Must pass Latch Missed setpoint within the Latch Missed time frame
2.Destination and Time 2 –Get below the Above Thread depth within the Lower to Thread time
3.Pressure – Down, With Stud
4.Done when it stops moving below the Above Thread depth
5.If it stops moving before the setpoint, it will fault and return to the Open/Close Latch position
G.Rotate CCW to find the 1st thread
1.Pressure – Down, With Stud
2.Torque/Speed – Search CCW
3.Time – Wait On Thread
4.Destination – Drops 1-2 mm
H.Begin insertion of Stud
1.Pressure – Down, With Stud
2.Torque/Speed – Thread In
3.Time – Install/Remove
4.Destination – Below Insert Fast
I.Continue stud insertion, fast
1.Pressure – Turning Compensation
2.Torque/Speed – Insert Fast
3.Time – Still part of Install/Remove
4.Destination – Within Start Slow Difdistance of Final Position Auto
J.Finish Stud Insertion in Slow mode
1.Pressure – Turning Compensation
2.Torque/Speed – Final
3.Time – Still part of Install/Remove
4.Destination – Below Final Position auto
K.Disengage Tool from Stud
1.Pressure – Down, No Stud
2.Depth – Below Final Position Auto
3.Time – Lower to Engage
4.Stud Disengaged Proximity Probe will indicate stud disengaged
L.Lift off the Stud
1.Pressure – Down, With Stud
2.Time – Check to Disengage
3.Destination – Sensor Rod proximity probe indicates tool is clear of stud
M.Return to ‘Home’ position
1.Pressure – Full pressure (not adjustable)
2.Time – Lift/Lower
3.Destination – Home
III.Manual Operation
A.Only one timeout limitation – Tool Stalled
B.Speed/Torque
1.Manual Slow all slow evolutions
2.Manual Fast all fast evolutions
C.Pressure
1.As pushed by buttons
2.Lift and Lower buttons for Up, No Stud and Down, No Stud respectively
3.Adding Weight comp On/Off to the above makes it Up, With Stud and Down, With Stud
4.With Weight Comp On/Off only, the pressure is Turning Comp
D.Depth
1.Not all depth setpoints apply and some are manual only
2.Stops stud lift operations at Open/Close Latch position
3.Cannot turn fast when within Start Slow Dif of Max Depth, neither inserting nor removing
4.Cannot turn fast when above Manual Slow

EO03Identify potential operational concerns and adjust parameters to correct them