The LOGO!MAT Track Rotate can rotate 270° in total but not in one direction. Hard stops prevent a 360° rotation from being performed.
 
To avoid destroying the energy chain and binding the Track Rotate, is is imperative that the 0°, 90°, 180° and 270° marks on the base frame and on the rotation part correspond.
 
The home position is reached, if the marks of the rotating part and the 0° mark on the base frame match.
 
From that position, the following rotation movements can be realized:
  1. 90° clockwise: Red mark at 90°
  2. 90° counter clockwise: Red mark at 270°
  3. 180° counter clockwise: Red mark at 180°
All four adjoining conveyor tracks can be reached from every position with these rotation movements; either with a straight pallet flow or a reverse pallet flow. Also, a reverse pallet flow into the same conveyor section, where the pallet just came from, is possible with the Track Rotate.
 

Track Rotate Positioning home position

Track Rotate Positioning general overview

 

 

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Tuesday, 20 October 2015 20:05

Track Rotate: %Mechanical Installation


The installation has to be done by trained and authorized personnel only. All tasks which are not described in that technical documentation have to be done by LOGOMAT personnel or with their supervision to maintain the warranty for the LOGO!MAT Rotate Unit. The set up and the installation can affect the functionality. LOGOMAT does not have warranty on the functionality, which is depending on the installation and the programming, unless it is done or supervised by LOGOMAT personnel. 
 
Only authorized personnel are permitted to install a Track Rotate. Before the Track Rotate can be fitted, unpack it, clean and look for any damage. If there is damage, contact LOGOMAT Customer Service. The Track Rotate cannot be installed with any damages.
 
For the set up and installation of the Track Rotate, please pay attention to the following steps:
  1. Install the adjoining conveyors according to the installation manual and level them out.
  2. Place the Track Rotate in position and check the gaps to the adjoining conveyors according to the approval layout. Make sure that the Track Rotate is locked in the right position because the cable tracks are installed in a certain way.
  3. Adjust the height of the conveyor to the same level as the rest of the line by rotating the threaded spindles of the leveling feet (max. +/- 50 mm).
  4. Level the Track Rotate in all directions so that the height in relation to all adjoining conveyors matches.
  5. All connecting tubes at the base of the conveyor should be properly assembled and loosely tightened until the entire conveyor line is set up.
  6. Once the Track Rotate and the entire conveyor system are confirmed level, tighten all bolts and anchor the track rotate through the leveling feet to the concrete.
  7. Set up the electrical supply of the Track Rotate properly with regards to the turning motion.
  8. Install all sensors and set up the controls accordingly.
  9. Disconnect the power supply and prevent it from being switched on by any other person.
  10. Spin the Track Rotate by hand to ensure the proper alignment and movement. Release the shot pin and let it engage into the index bushings. Check the proper location of the hard stop to avoid an over spin.
Even if the conveyor system gets set up and installed temporarily, the entire set up and all alignments have to be done correctly to ensure a proper function.
 
 
The Track Rotate must stay in position if a pallet gets conveyed from the straight conveyor section onto a LOGO!MAT Track Rotate. The drive has to be turned off and the shot pin has to be locked in one of the index bushings. This scenario has to be fully defined by the sensor signal configuration.
 
The operation of the Track Rotate has to be controlled automatically and the controls are not part of the delivery if not stated differently.
 
All safety requirements have to be considered, because the controls and its programming affect the function of the LOGO!MAT Track Rotate.
 
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Monday, 19 October 2015 22:26

Rotate Unit: %Replacing the shot pin


The shot pin is available as an entire unit or as a spare part. It can be replaced without taking the Rotate Unit apart.
 
Please follow the steps to replace the shot pin unit:
  1. Disconnect the power supply and the pneumatic air supply and prevent them from being switched on by any other person.
  2. Remove the safety covers to gain free access.
  3. Take the sensors out of their sensor brackets and mark their positions for reinstallation. Mixing them will negatively influence the behavior of the rotate.
  4. Remove the pneumatic air hose from the fitting.
  5. Loosen and remove the four mounting bolts of the shot pin unit. (Make sure that you retain all fasteners.) ATTENTION: The unit can fall out completely during removal if not supported.
  6. Replace the shot pin unit and install the new unit in reverse order.
  7. Ensure to reinstall the pneumatic air hose to the fitting.
  8. Install the sensors to their respective positions using the marks you made during removal and ensuring the necessary switching distance. Make sure that the sensors are adjusted properly and that see their target as needed.
  9. Test the function of the shot pin unit by operating its valve manually.
  10. Install the safety covers.
  11. Reconnect the power and pneumatic supplies.
  12. Test the Rotate Unit normally, ensuring proper operation, before resuming full operation.

Rotate Unit Replacing shot pin 1

Rotate Unit Replacing shot pin 2

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Since the rotation is guided by a large bearing located towards the bottom of the rotate, four support bearings are required at the rotating plate. They need to be adjusted to keep the rotation plate centered in the cutout while not blocking the rotation or creating additional drag. The hole pattern for these bearings is pre made in the plate with each hole being 0.1 mm further out in relation to the centerline. Installing the bearing in the sufficient hole changes the location in relation to the rotating plate and adjusts the support. The set up is completed before delivery, but the procedure should be redone if a bearing needs to be replaced or if there is too much play in the rotation plate.

Rotate Unit Adjustments rotation support bearing 1

Rotate Unit Adjustments rotation support bearing 2

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The safety clutch is a safety element that has to be adjusted properly to ensure operator safety. LOGOMAT automation systems, Inc. pre-adjusts the safety clutch before delivery. If further adjustments are necessary, please first check the operating requirements. Overloading the safety clutch should be avoided in any case.
 
The safety clutch is not infinitely variable. It should be adjusted loosely enough so that the operator is able to stop the Rotate Unit during rotation without excessive force, but not loose enough to cause a stall when the shot pin is pushed in at the ramps.
 
You can find more information in the documentation of the manufacturer of the friction clutch.
 
The operating company can replace the friction clutch of the Rotate Unit. The work should be performed in the same way as a motor replacement (see previous chapter).

Rotate Unit Adjustments friction clutch

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Monday, 19 October 2015 21:45

Rotate Unit: %Changing the drive motor


Electrical voltage warning: The entire conveyor system must be de-energized before performing the following work!
 
The drive motor of the Rotate Unit can be replaced by the operating company. Please follow the instructions:
  1. Disconnect the power supply and prevent it from being switched on by any other person.
  2. Remove the four bolts of the motor mounting plate and take the whole unit off.
  3. Take the bolts of the mounting plates and take them off the motor shaft using adequate tools.

    Rotate Unit Changing drive motor 1

  4. Remove the friction clutch from the motor shaft.

    Rotate Unit Changing drive motor 2

  5. For reinstallation of the drive motor, follow the steps in reverse order, installing the friction clutch and mounting plate accordingly and pressing the motor gently and evenly on to the rubber buffers mounted on the rotate plate.
  6. Reconnect the power supply.
  7. Check the unit in all functions and adjust the friction clutch according to the clutch maintenance manual to the proper force, if necessary.
The Rotate Unit should be operated with as little force as possible for safety reasons, but it shouldn’t be loose enough to stall when going into the hard stops.  
Freigegeben in L - Rotate Unit
Monday, 19 October 2015 16:59

Rotate Unit: %Pneumatic Installation


The shot pin is activated by an integrated pneumatic cylinder which is manufactured by LOGOMAT automation systems, Inc. The pin is spring loaded to return in the extended position for safety reasons. In case of a pressure loss, the shot pin will go down and the Rotate Unit will stop in the next index bushing.
 
A 3/2 pneumatic valve is needed for operating the shot pin. The installation is done with one 6 mm air pressure line connected to the pre-installed fitting. The air hose has to be routed through the cable track to ensure no damage while rotating the unit.
 
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Damages on the Rotate Unit or on surrounding machines which were caused by incorrect operation or control errors are not in the responsibility of LOGOMAT automation systems, Inc.
 
Switching Status of the Rotate Unit at the beginning of the rotation:

Rotate Unit Switching status 1 home position

 
Switching Status of the Rotate Unit during rotation:

Rotate Unit Switching status 2 during rotation

 
Switching Status of the Rotate Unit short before the end position:

Rotate Unit Switching status 3 before end position

 
Switching Status of the Rotate Unit at the end position:

Rotate Unit Switching status 4 at end position

 

 

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Two sensors are needed for every stop position of the Rotate Unit. (Two adjoining tracks would need four, three tracks would need six and a rotate with all four exits would need eight rotation switches.)
 
The drive motor of the roller conveyor has to be turned off once both pallet present switches see the target at the pallet. The drive motor has to stay off during the entire rotation process.
 
The controls of the Rotate Unit need many interfaces with all adjoining components. The details depend on the required pallet flow and the conveyor layout.
 
In general, the pallet needs to be brought onto the rotate unit and the drive motor will be switched off once both pallet present sensors see the target. The locations of these sensors determine where the pallet stops. Once the pallet is seen on top of the rotate, the shot pin is released and the rotation motor will start in nominal speed in the direction of the required position. As soon as the first sensor of the next rotation position sees the target, the shot pin is extended to catch the next index bushing. If a VFD is used, the rotation speed should slow down to a reduced speed with that signal.
 
As soon as both rotation position sensors see the target AND the shot pin is seen as extended, the rotation motor is switched off and the position is reached. The pallet can then depart the rotate unit by switching on the conveyor drive in the correct direction.
Freigegeben in L - Rotate Unit
Monday, 19 October 2015 15:26

Rotate Unit: %Electrical Installation


The LOGO!MAT Rotate Unit must be equipped with sensors to guarantee smooth operation. LOGOMAT recommends controlling the rotation drive through a frequency converter to allow a soft stop and a possible acceleration of the rotation. These electronic components must be supplied and installed by the operating company.
 
The controls logic for proper function and safe operation must be provided by the customer if the unit isn’t ordered with the LOGO!MAT ITB Control Integration.
 
Two sensors have to be installed per stop position. With these two sensors, it is possible to define the turning direction and position by checking which of the two sensors will recognize the target first. In addition, the drive should decelerate when the first sensor recognizes the target. The drive motor has to be turned off when both sensors recognize the target and the shot pin is extended to avoid increased wear of the friction clutch.
 
The shot pin (up / down) sensing can be completed by either one or two. LOGOMAT does recommend using two sensors to be able to track the movement of the pin because of the ramp before the stop.
 
All sensors have to be adjusted for the correct switching distance to allow a proper function. The controls have to include a debounce circuit for all the sensors to eliminate malfunctions because of short fault sensor signals.
 
Damages to the Rotate Unit caused by incorrect operation or control errors are not the responsibility of LOGOMAT automation systems, Inc.
 

Rotate Unit Elecatrical Installation 2 adjoining tracks

Rotate Unit Elecatrical Installation 3 adjoining tracks

Rotate Unit Elecatrical Installation 4 adjoining tracks

Rotate Unit Elecatrical Installation shot pin sensor

 

 

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