26 Support Entries


iPad does not connect to the machine. Screen remains gray and shows no values.

Possible Causes & Resolutions:

  • Connection via Wi-Fi
    • In the settings, check whether the iPad has connected to the correct Can Man Wi-Fi
    • If no Can Man Wi-Fi is visible, check router/wireless access point.
      ➔ Restart router/wireless access point. If still no Can Man Wi-Fi is visible, the router/wireless access point has lost the settings or is broken. Contact Can Man via by opening a new ticket.
  • Connection via Cable
    • Check all plug connections of the network cable between IPC and iPad
    • Check iPad adapter power supply. The adapter must always be powered, otherwise the connection will not work.

Battery of IPC is empty when:

  • System Date and Time (Error Log) not correctly displayed and getting lost when powering off the IPC.


To Do:

Download PDF here

Note the adjustment of the clearance of the roller after the BIG8 monobloc cutting heads is ELEMENTARY to prevent bow cuts!

Check if the roller is not “tilted” (and thus one-sided “in the air”), refer also to manual of your slitter how to adjust the roller.


Possible causes:

  • If your Big 8 slitter does have only one long magnetic rod-sensor, Big 8 cutting heads shall not touch each other, because the magnetic positioning rings (sitting around magnetic rod-sensor and mounted in each Big 8 unit), could interfear each other.
  • The amount of Big 8 units must always be equal with the amount of Big 8 icons shown on the display.

Preparing of LAN or WLAN access:

  1. Connect a new PC or laptop with the Wifi of the slitter (CM_POWER_CONTROL). If you don’t have the password, contact Can Man
  2. Open the network setting of that new device and set a fix IP address = SubNet
  3. Transfer the “CanMan” folder (C:CanMan) with the programs from the original windows tablet to the new device

How to start panel/HMI software:

  1. Open the folder “CanMan”
  2. Open the folder “Runtime”
  3. Double click the file “WinGRS”
  4. Now the software starts and you can use it to control the slitter

Note: Panel Software is starting in Demo mode and does work for 60min only. After that it has to be restarted. To run the HMI without time limit you need a new license or if the original panel is not in use anymore the license can be transferred with the designated form:

Setting up of a new device in case of an unserviceable device:

  1. Ask Can Man for the HMI Software
  2. Unzip the received file to the desktop of the windows device
  3. Open the folder “CanMan”
  4. Open the folder “Runtime”
  5. Double click the file “WinGRS”
  6. Now the software starts and you can use it to control the slitter

! Attention ! The recipe from the unserviceable device is lost.

  1. Check the position of the switch!
  2. The internal battery is defect!

If you do not use the panel for a longer period (several weeks), the device should be turned off on the backside. Otherwise the internal battery will discharge and will get damaged!


The internal battery can be exchanged by opening the back cover of the unit. CM Article No. 009548


If you push the button on the right side, you are able to see the status of the integrated battery and optional available second battery.


The optional second battery is located at the back of the device.


Possible causes:

  • No supply of a slave on the bus system.
    • Check supply of all slaves.
      Emergency stop must be released.
  • Address of slave on Profibus is wrongly adjusted.
    • Check setting of all DIP switches on the Lenze bus module and on the Linmot controller.
      You can find the correct setting on the wiring diagram.
  • Wrong position of the switch for end resistant on the bus plug.
    • Check all switches on the complete bus system. Seriously follow the cable from PLC to the last slave. First plug and plug of last slave must be set to ON, all other plugs to OFF.

Check function of the reed sensors B256, B257, B258 and B259.

You can find them on the cylinders of the magnetic conveyor (Y125) and transport roll (Y124). Manually activate the two cylinders on the valve block and adjust the reed sensors if necessary.

Refer also to the pneumatic diagram here.

Possible causes:

  • Responsible for having all stripes correctly aligned after first operation, are both rubber shafts.
  • Each rubber shaft has a left and right support, and each support is under pressure by a pressure spring.
  • If the setting of the springs is not correct, some stripes may stop earlier or later than other stripes:
    • Increase or reduce the tension on the springs, till you get a satisfying result.
  • If this still does not solve the problem, a complete resetting of both rubber shafts is necessary:
    • Reduce the tension of all four screws completely.
    • Release the air pressure by switching off the main air supply.
    • Both rubber shafts have to touch the lower rollers completely.
    • If, for instance, the left side of one rubber shaft does not touch the lower roller, do the following:
      • Slightly undo the M8 of the main support, till the rubber shaft goes down automatically, then lock the screw again.
    • Start to tighten the pin screw (for spring pressure tension) till each screw does touch the spring.
    • Turn every pin screw between 2-3 revolution, but all the same!
    • When you move the piston rod of the pneumatic cylinder completely in by hand, the rubber rollers must of course touch the lower roller, and you must see the springs get compressed further.
    • Switch the main air pressure supply back on.


Check the transport rings on the knives: If the rubber is too small (due to heavy wear) conical or much bigger (if no original spares are in use) cutting tolerances can be negatively affected!


Make sure that enough support rings are mounted between the knives. They keep the sheet leveled. The thinner the sheets, the more important it is to keep them flat.


Make sure that all knives are well grinded.

You should regrind your cutters after approx. 3 mio. sheets.


Possible causes:

1. Clearance between the upper and lower cutter is too small – min. 1/100 mm.


2. The bearings of the roller cutter have play => they need to be free of play!

3. The roller cutter shaft is heating up differently!

a) Something touches the roller cutter => slowly turn the roller cutter by hand

b) the bearing is heating up too much => bearing defect!



c) If you have an exchange roller cutter => the roller cutter shaft might not be fixed properly to the side.


=> or the roller cutter shaft is too tensely assembled!

Switch the battery “ON” on the backside of the touch-panel.


Start the touch-panel.


Click on this symbol.  


Click on the “CUSTOMER” key.


Login with your password.


After you push the tool button once more, you can see the recipe window. 


Do not push the load button. In this case you load an empty recipe and all parameters are set to 0 and you are not able to set back!


Choose a free memory space.
In this example 3 (blue coloured frame)


Push the „SAVE” button and a keyboard field will appear.


Enter a name for your program, e.g. „TEST“ and press the return key.
Confirm the entry with “Yes” or “No”.


Now you can see the saved recipe on the list. You have saved the actual sheet parameter incl. the basic parameters of the PowerCUT.

Possible cause:

  • The reed sensor B233 on the vertical cylinder rear/right corner is not correctly adjusted.
    • when piston of cylinder remains in bottom position (due to blank magazine clearing process), the reed switch must be active


Possible causes:

Make sure that the lateral, adjustable top guides (picture) are set correctly in lateral position as well as in height. They shall guide and hold the stripes as flat as possible over both sensors B260 and B261. Both sensors need to be reached at same time, otherwise the error will occur.


If the lateral guide is too far away from the sensor, the sheet might bulge. Therefore move the lateral guide closer to the sensor.

Do not loosen the screw marked red. The standard setting for top guide should be approx. X = 72 mm.


– Make sure that pressing rolls are adjusted correctly (picture).

– Check the movements of the sheet, they might get stuck somewhere.


  • Strip height is set wrong. Then the belt in front of the second operation is running too fast or too slow. This can create a problem with strip feeder LinMot.

Possible cause:

  • too many braking magnets
    => reduce the amount of magnets

If you have too few magnets, it might cause angularity problems!


Damages at the front edge:

  • the spring load at the catch might be too high
    => reduce spring load (see picture).


  • lateral guide (see picture – in red) might be too close
    => increase the distance “X” slightly.

Do not loosen the red marked screw. The standard setting for top guide should be approx. X = 72 mm.


Possible causes:

  • make sure that the inner core and the suction cup are on the same level (picture 1).
  • make sure that the suction unit in the upper (active) position is on the sheet metal level (picture 2)


Find a complete error list together with the interpretation of the error codes

Download PDF here

Possible causes:

  • Since the slider of the linear motor contains strong magnets, remove dust or small particles from slider with a disposable paper.
  • LED state shown by the yellow LED on the controller or check the hand panel
    • “Sensors / Actors 3/4”
  • Motor resistant according Linmot manual
  • Cable according Linmot manual


Possible causes:

  • wrong cutter setting
  • cutters are blunt
    • grind your cutters
  • watch the sucker unit in front of the 1. cutting operation for too much downwards-bow of the sheet
    • adjust bottom stop
    • replace worn out sucker or parts
    • mount the full range of downholder rings – see picture below!
    • they prevent the bowing movement of the sheets

NOTE: The SQM measuring device can only detect “angular” cutting errors!

Possible cause:

  • wrong position of a reed sensor
    • check all reed sensors
    • use the help of the display – which shows the status of the sensors
    • consult the timing diagram of the PowerCUT – download here.

Possible cause:
– bus connector limit switch not set correctly – address and dip switches not set according

to the electrical scheme (bus subscriber) – wire defect
– bus connector defect
– bus modul or subscriber defect.


To narrow the error you have to check the status with all the subscribers.
To test, switch the limit switch into the bus connector => the bus runs now to the corresponding subscriber, e.g. “Lenze inverter” which the LED flashes yellow.

If you are able to narrow in the error, exchange the corresponding components.


Do not forget to set the parameter and the dip switches accordingly. The parameters are mentioned in the electrical scheme!


BF LED (red) not active

Lenze inverter:
LED upper-left must light up (green)
LED upper-right must be flashing (yellow)

Error LED not active or no error code profibus



Beckhoff Control:

For the Beckhoff Control, please refer to this PDF for instructions.


Please refer to “User Manual Motion Control Software” for the error codes of the MC Software. The PROFIBUS Interface has the following additional error codes:

Error code hexadecimal: Error description: C1h Fatal error: Drive not supported
C2h Config error: Invalid MACID
C3h DP Err: Connection lost

  • Check the squareness of a couple sheets: From corner to opposite corner, as well as opposite corner distance. Compare both measures: The difference should be < 1 mm.
  • Make sure that the lateral position of the sheet stack is correct: Correct the stack position by the handle, until the sheet does < 2 mm lateral movement till the final position before 1. cutting operation.
  • Measure the sheet flow height on the first table: 0.5 mm below cutting level.
  • Stop 1 sheet before the 1. operation – with centering rollers closed – and check the pressure on the spring roller: Too much load on the spring can damage the sheet.
  • The speed of the first cutters (measure on the carbide knife) must be a around 1 m/min less compared to the speed of the driven conveyor belt.
  • Make sure that both trim-guides (after 1. operation) do have a space of 0.5 mm to the stripe edge!
  • Measure the burrs of all stripes, if necessary grind the knifes!
  • Make sure that one pair of knifes is mounted reversely (helps to guide trim downwards, helps to avoid bow cut).
  • Measure the concentricity of all transport rings, exchange damaged transport rings!
  • Fill-up too big space(s) between the cutters with white guide-rings ! This helps especially for thin sheets and for higher developments. Measure the gap between each guide-rings with feeler-gauge 0.50 mm.
  • Regulate the position of the centering system by the hand wheel, till both trims measure the correct width.
  • Check the parallelism of each trim: Bend the trim, and compare both widths. The result is related to the squarness of the sheets. If the trims are not parallel, it is needed to adjust the alignment of one none-spring tensioned support bearing on the centering device.
  • Measure parallelism of all stripes after 1. operation: Target < 0.05 mm!
  • Set the sensors between both overhead conveyors (after 1. operation) correctly: Laterally, the stripes should not move more than 2 mm after being centered by the 2. centering device!
  • Measure the stripe flow height on the second table: 0.5 mm below cutting level!
  • Measure the blank flow height after the 2. operation: 1 – 2 mm below cutting level!
  • Make sure that enough magnets are mounted in the area before the 2. operation, and that the magnets are mounted at the correct positions. Attention: Too much magnet force will cancel the centering device function!
  • Reset the postion of the Linmot infeed device according to manual.
  • Reset the position of the Linmot centering device according to manual.
  • Position 1 stripe before the 2. operation – with centering rollers closed – and check the pressure on the spring roller: Too much load on the spring can damage the stripe!
  • Check the spring tension of the push finger on the second operation. Maybe it is to low and the push finger does not go back to the right position after moving back to feed the next stripe.
  • Check the mechanical condition of the push finger. Maybe it is worn out and have to much backlash.
  • The acceleration belt for the second operation must be tensioned. Attention!! If spanner is readjusted, the thread bolt can touch the knives. We recommend to chop the thread bolt or take out the spanner and remove the thread bolt! (related for PowerCUT manufactured before 02.2015.)
  • The speed of the Linmot infeed system during transfer into 2. operation must be correct > cannot be measured.
  • The speed of the second cutters (measure on the carbide knife) must be a around 1 m/min less compared with to the speed of the driven conveyor belt (only if lift-table is in use).
  • Measure the burrs of all stripes, if necessary grind the knives!
  • Measure the concentricity of all transport rings, exchange damaged transport rings!
  • Make sure that the grooves of all Big8 z-bars are clean!
  • Fill-up too big space between the cutters with white guide-rings! Measure the gap between each guide-rings with feeler-gauge 0.50 mm.
  • Use the SQM measuring device to measure the angular errors of each stripe!
  • Test the angular tolerances by choosing velocity 1, 2 and 3. Report the differences.

Setting gauge for blank magazine

The setting gauge allows faster adjustment of the blank magazine. This file can be used as a template for individual manufacturing according to specific formats.

To remove the used cutting blades, two spherical clamp screws M6 (8) have to be loosened. The steps for the fitting of the fixing plate (4), which is part of the standard tools delivered with every slitter, are:

  1. Remove the plastic plate cover, 4 screws M5.
  2. Turn the cutter shaft (7) which is fitted to the drive motor (1) with the special tool (3) until the blade (2) is in the horizontal cutting position.
  3. Secure the direct driven cutter shaft (7) in this position with a fixing plate (4) against twisting. The fitting of the fixing plate (4) is done with 2 M5 screws which were used on the plastic plate cover.
  4. Release the clamp nut (6) of the not driven cutter shaft (9) with the special tool (3) and the point opening socket wrench (5).
    Use the same wrench (5) on the clamp nut (6) beside the drive motor (1). Turn clockwise = to grip
    Turn counterclockwise = to release
  5. Turn the released cutter shaft (9) until the blades are nearly closed together. Place a small piece of 0,02 mm tape between the blades. Turn the cutter shaft (9) until the tape is tied between the blades.
  6. In this position, the clamp nut (6) of the cutter shaft (9) should be tied up with the special tool (3) and the point opening socket wrench (5).
  7. Take away the tape and check that the cutter blades do not touch each other. Turn with the special tool (3), in the correct direction, with the motor driven cutter shaft (7). The ahead running blades should be in this cutter shaft.

During the assembly of the new cutter blades (2) check that the ahead running blade is on the motor driven cutter shaft (7). See picture no. 3

Nobody should start the unit during the set up. The emergency button should be pressed down, the key-operated switch taken away from the slitter.

Non-compliance of this instruction will cause cutter blade damage or blocking of shafts.

Possible causes:

  • the preselect counter is activated but a value is missing
  • the blank collector is full
  • if connected to a line control, it may have triggered a line stop