Support

Problem:

All drives are starting correctly, but the vacuum and welding current are not active.

Possible Causes & Resolutions:

• Welding pressure has been set below the min. value of 2.0 bar => Check the welding pressure setting value on the precise air-regulator and reset if needed.
• Solenoid valve welding pressure Y10 does not work correctly  => Check the welding pressure valve Y10. Does the valve switch correctly and do the welding rollers close?
• Welding rollers are closing and welding pressure is set correct, but no welding pressure value is displayed on the HMI => Check whether the analogue sensor B77 is working correctly or not.

Problem:

Downstacker motor doesn’t move correctly to the reference position, stops or suddenly changes the direction of rotation. Display of servo controller U16 shows „IMax“ or „P03 trip“.

Possible Causes & Resolutions:

To check:

• Mechanical condition of downstacker motor: Turn it by hand and check that everything runs smoothly.
• Resolver mounting: Is firmly connected to the motor shaft?
• Resolver bearings: Remove the resolver from the motor shaft and check if it is turning smoothly.
• Resolver and motor connections: Motor and resolver are connected correctly and clamps/plugs tightened?
• Motor windings: Disconnect the motor from the inverter and check the windings with an ohm meter (U-V,U-W,V-W). All values are equal?
• Output servo controller: Measure the inverter output voltage when it should run (U-V,U-W,V-W). If 0V and display shows „IMax“ maybe servo controller defective.

Possible cause:

• The setting of the magazine is wrong
• The separating air is not correctly set, or the air pressure is too low
• Too much tin plates – especially on can heights over 200 mm:
  • in the magazine, the weight is too high!
• Tin plates have too much burrs
• Suckers are worn
• Sucker height too low
• Linmot slider is not well positioned:
  • Pusher plate must stay around 2 mm behind the tin plates
• No signal of tool sensor B6:
  • Maybe gap between can body and sensor to big?
  • Maybe wire break and no signal on plc/pacemaker. Check cable and plug!