KnowledgeBase

Couple6 Quick Start for the S-680 System Basic Steps for Starting and Using Couple6 Alignment Software

Please see the Couple6 manual for complete details.

Opening Couple6

Turn on the T-1290 Target and double-click the Couple6 icon on the desktop to open the program.  Couple6 will automatically connect to the target and display the serial number on the task bar.

 

 

 

 

 

 

Starting an Alignment Project

Click the Project Manager: Load/Create Manager button on the Home Screen. Tap Create New Machine and Start Project button. Enter the project filename and machine information and hit OK to return to the Main Menu.

 

 

 

 

 

Step 1: Dimensions and Tolerances

Mount the brackets on both shafts.
From the Main Menu, tap Step 1: Dimensions and Tolerances.

  1. Select Coupling type.
  2. Select Alignment type.
  3. Enter motor dimensions as shown in the graphic to an accuracy of .13 to .25″ (3-6 mm).
  4. Select motor RPM to set the tolerance.
  5. Optional: Go to Thermal Growth screen to enter TG offsets.

 

Step 2: Mounting the Target and Laser

Ensure the dust cap/alignment tool is attached to the target. Slide the laser and target over their bracket posts until the laser beams are centered vertically and horizontally in the dust-cap holes. Tighten the thumb screws as tight as you can with your fingers.  Remove the dust cap.

 

Step 2: Laser Setup
Initial Alignment, Adjust Target and Laser

To maximize the measuring range of the target, the V-center value needs to be ± .040″ (1 mm) of zero. Red arrow means the laser is out of center, and you should move the target in that direction.  Green or Yellow arrow means you are in the center zone. Note due to large measuring range of target, you can still use the system even if the arrow is red. Click Next to go to Step 3.

 

Step 3: Soft Foot Check

Soft Foot is a condition where the four feet of the motor are not parallel to the machine base. What usually happens when a motor has soft foot is that the motor appears to be aligned in Step 5, but when the data is re-taken, the motor is still misaligned. This continues until the soft foot is detected and corrected.

The Soft Foot Check is strongly recommended, but is optional. To skip it, tap Next. Follow the step-by-step screen instructions to check for soft foot and calculate recommended shims to fix it. Before proceeding to Step 4, ensure that all bolts are tightened.

 

Step 4: Take Data (AutoSweep™)

To record alignment data in Auto Sweep Mode, rotate the laser and target together (must be coupled) to sweep an arc of data.  Start or stop at any clock location as long as there is a minimum 60-degree sweep.  Accuracy can be affected if a sweep of less than a 360° is taken, although the decline in accuracy does not become significant until the sweep arc is close to 90°.

When the shafts stop rotating, Couple6 automatically calculates the results.  If there is a lot of vibration, you can also click Done to calculate results. If the data looks good, press Accept. Tap Results to view the results against tolerance from Step 1. If out of tolerance, press the Shim button to correct. Please see the Couple6 Manual for detailed descriptions and directions for taking data in each mode.

If using the S-680, we recommend leaving the laser/target at 12:00 when finished rotating, although this is not required. If the laser/target are left at any other location, Couple6 automatically rectifies the readings in Step 5 so that it appears that the laser/target are at 12:00.

 

Step 5: Move and Shim

Add shims as instructed on the screen.  To perform moves, rotate the shafts to 3:00 or 9:00 and Step 5 will automatically show the H-Axis Live Display.  Move the motor in the direction of the arrows. When the alignment value displays turn Yellow, the results are acceptable; when Green, the results are excellent. Click Remeasure to go back to Step 4 and retake data to verify the alignment is in tolerance. Please see the Couple6 manual for further details and options for this step.

 

Step 6: Printing a Report

Click the HOME icon to go to the Home Screen.

To print a report in Couple6, click the Alignment Report and Data Export to access the Report Configuration popup window.

Report Options: Select which parts of the report to include:  Soft Foot, Thermal Growth, and/or History. These sections of the report will not print unless the box is checked.  Tap Edit Header, Edit Project Note or Sign Report to modify the report.

 

Printer Settings

Click to select the printer, page size and other printer settings.

Save Hard Copy to REPORTS Folder 

The report is automatically saved as either an .xps file (MS XPS Document Printer format to open report in Explorer to view and print) or in .pdf format for use with Adobe Acrobat. The file is saved in the Report Folder in My Documents/Couple6 and can be emailed or transferred electronically to users who do not have Couple6 to view the report.

Couple6 Backlash – T-1290 Target Only

Couple6 uses the Vertical Offset and Vertical Angular values to calculate the misalignment of the motor shaft axis of rotation (AOR) relative to the driven unit’s AOR. By using only the Vertical Axis for taking data, Couple6 is insensitive to coupling backlash and it takes a severe case of backlash to produce a measureable impact on the accuracy of the data. In almost all cases, backlash does not affect the accuracy to any measurable degree. After taking the data, Couple6 uses a sophisticated curve-fitting algorithm that determines the misalignment. The software then uses this information to calculate display offsets and applies them to the raw data to show the true misalignment

Excess Backlash Detector (S-680 T-1290 Target Only)

 If Excess Backlash Detected displays at the bottom of the Measurement Results Screen, Couple6 has detected excess backlash in the coupling. This could cause problems aligning the Horizontal Offset in the Move screen because the T-1290 (or any other laser alignment system) cannot detect the difference between a Horizontal Offset Move and a slight rotation of the motor shaft relative to the pump shaft.

When aligning a motor with this condition, a message displays in the Step 5: Move Screens if Couple6 detects a >3° rotational move.  The message directs the user to rotate the laser/target to 3:00 or 9:00 for the Horizontal Move or retake the data and leave the laser/target at 3:00 or 9:00.

Backlash Detector (T-1290 Only)

 The T-1290 target offers the capability to detect backlash at the coupling.  During Step 4: Auto Sweep data collection, Couple6 determines if there is too much variability in the Horizontal Offset value (an indicator of coupling backlash). If so, Couple6 monitors the rotation angle in the Step 5: Move Screens to determine if it is necessary to perform the Horizontal Move while the laser/target are at 3:00 or 9:00.  If Couple6 detects too much of a change in the rotation axis (more than ± 5 degrees) during the Vertical Move, a warning message displays, indicating rotation to 3:00 or 9:00 is necessary to perform the Horizontal Move. The other option is to retake the data in Step 4, leaving the laser/target at 12:00, and retry the horizontal part of the alignment.

The reason for the Excess Backlash Detected message is that the T-1290, or any other laser system, cannot detect the difference between a Horizontal Offset move and a slight rotation of the motor shaft relative to the pump shaft.  This could cause errors aligning the Horizontal Offset in the Move screen.  This potential Horizontal Offset error does not occur when the laser/target are at 3:00 or 9:00.

 

 

Using the A-980 Bracket System

How to use the A-980 Bracket System for Shaft Alignment

 1A

 Insert the Chain Hub into the groove of the A-980 Bracket as shown below. Make sure to align the flat sides of the pin to the groove.

 

1B

Wrap the chain around the shaft and over the pin in the hub. The chain goes on the inside of the hub for shafts of 1-3 inches diameter and on the outside for shafts of 3-12 inches diameter (see 1B and 1C).

 

1C

Insert chain inside the hub for 1-3 inch diameter shafts.

 

1D

Chain goes outside the hub for 3-12 inch diameter shafts.

 

1E

Pull chain through or around the hub, ensuring that the last link is over the pin.

 

2A

With the last link over the pin, hand-tighten the knob as tight as possible. Do not use pliers.

 

2B

Place the magnetic end of the rod on the opposite end of the chain. The magnet holds it in place.

 

2C

Fold the chain in half and place the remainder of the chain against the other half of the magnet at the end
of the rod.

 

2D

The chain is now folded and out of the way and will stay in place for a full rotation of the shafts.