Installation Manual

Troubleshooting 8-81
8.3 Troubleshooting Z-axis Motion
If the Dispensing Head is not moving correctly in the Z-axis, refer to Table 8-26 for a summary of the
symptoms, probable causes, and fault isolation.
Table 8-26 Troubleshooting Summary – Z-Axis Motion of Dispensing Head
Symptom Probable Cause Fault Isolation Procedure Subsection
Recoverable Interlock State
Interlock Fault Isolation 8.1.4
EMO State
System Power Fault Isolation 8.1.3
Motors in Open-loop State
Troubleshooting the Servo
Controller (PMAC)
8.2
Servo Amplifier
Z Servo Amplifier Fault Isolation 8.3.2
PMAC Card
Troubleshooting the Servo
Controller (PMAC)
8.2
System Power Fault Isolation 8.1.3XY Servo Interface PWA
Z Servo Amplifier Fault Isolation 8.3.2
Servo Transformers Z Servo Amplifier Fault Isolation 8.3.2
Z-axis No Z –axis Motion Fault Isolation 8.3.1
No Z-Axis Motion
Power Manager Main Power Fault Isolation 8.1.2
Fatal Following Error
Troubleshooting the Servo
Controller (PMAC)
8.2
Z movement stops
and an Open-loop
error occurs
EMO State System Power Fault Isolation 8.1.3
Binding or Noisy
Z-axis motion
Mechanical Interference
Troubleshooting the Servo
Controller (PMAC)
8.2
Problems resulting from environmental and applications abnormalities, spills, obstructions, and
workpiece irregularities that are not system related should be eliminated prior to undertaking more
advanced troubleshooting.
TIP To quickly identify problems, look for obvious signs such as burnt, discolored, missing,
damaged, or loose parts, obstructions, and foreign objects. Obvious uncharacteristic heat,
noise, odor, vibration, or movement can also be used to isolate problems quickly. If a
problem reoccurs frequently, there may be other root causes to the problem.