GP44 Semi-Automatic Strapping Machine
OPERATION -23-
TROUBLESHOOTING
SCOPE
The following troubleshooting procedure provides a step-by-step procedure to help solve problems that occur
on the strapping machines. Since all strapping machines perform five basic functions:
• Strap Feed
• Grip Lead End
• Initial Retraction
• Controlled Tension
• Release Tension, Cut and Weld
The troubleshooting is organized according to these basic functions. Lastly, there is an electrical
troubleshooting procedure to help diagnose typical electrical problems.
There are a few quick checks that should be made on any machine before starting the troubleshooting process.
These checks will make sure that the basic functions of the machine are in tact. Before starting the
troubleshooting process, make sure that:
• The machine is stopping cleanly in home position. The end cam should be stopping in the small
detent and the right gripper should be at the small portion of the cam immediately ready to ride up the
cam into the gripping position.
• Check the incoming strap photo eye to make sure it is properly sensing the strap. Adjust the
sensitivity if necessary.
• Check and set the control voltage to 100 volts. Set the incoming voltage to the proper taps.
• Blow out and clean out the machine to make sure all components are free, unobstructed and moving
properly.
If a particular component is not acting properly, remember that there are several actions that must happen for
a component to activate. The path that the signal to activate a component usually starts with an output on the
PLC. The output on the PLC occurs when the conditions set in the PLC program are correct for that particular
output. The output on the PLC then usually activates a relay. The relay starts or stops the flow of electricity
to the component. Once the electricity flows to the component, the components should activate unless it is
defective or obstructed.
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