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PVA Portal Manual Revision I / Janua ry 2022 Page 91 of 106 15.2 Low Material Le vel There are thre e common ways t o monitor th e material lev el: • Scales are the most common an d flexible opti on to monitor the mater …
PVA Portal Manual
Revision I / January 2022
Page 90 of 106
8. Perform the Startup Procedure. Refer to Section 10.1 for more information.
If a door is open while the Door Bypass switch is in the OFF position, or the workcell is in
any machine state besides the Manual or Calibration modes, it will cause a door error.
Recovery from a door error is similar to the recovery from an Emergency Stop.
Other workcell errors can occur, such as:
• Low air pressure
• Low material flow
• Insufficient exhaust air flow
These errors must first be corrected, and then the Startup Procedure can be performed
to continue. Refer to the section that relates to the error. Refer to Section 10.1 for more
information on the Startup Procedure.
Below are examples of the other possible error screens:
Figure 115: Door Open Error
Figure 116: Low Material Level and Low Exhaust Flow
PVA Portal Manual
Revision I / January 2022
Page 91 of 106
15.2 Low Material Level
There are three common ways to monitor the material level:
• Scales are the most common and flexible option to monitor the material level. They
have two settings: one for a low material level and one for an empty level. When the
low material level is reached, the operator will be shown a message, but the workcell
will continue to operate. When the empty level is reached, the workcell will stop
operating. To view the amount of a material in a tank, select the Scales tab on the
right side of the Portal screen. This option can be viewed in any mode. Refer to
Section 9.6 for more information on Scales.
Figure 117: Material Level in Scales Tab
• Floats are an additional way to monitor the material level. However, this option will
only notify the operator when the material is low.
• Proximity Sensors are used for cartridges or syringes. The proximity sensor is
activated when the ram moves to the low material position.
The workcell only measures the material level(s) when in Auto Cycle or Manual “One Shot
Wet” mode. If there is a material level error, the machine can operate in all modes, except
for Auto Cycle or Manual “One Shot Wet” mode, until the material level is raised above the
low level.
Note: A low material level will not stop a cycle. The cycle will complete the path
program and then stop machine operation.
PVA Portal Manual
Revision I / January 2022
Page 92 of 106
15.3 Resetting the Exhaust Fan Overload Relay
Machines with exhaust fans may have errors if the overload relays trip. Perform the
following steps to return to normal operation:
1. Set the main power switch to the “OFF” position.
2. Open the electrical enclosure and examine the overload relay for a tripped flag.
3. Confirm that the current set point is set correctly on the overload relay. Examine
the rating on the exhaust fan housing for current draw.
4. If necessary, push the “Reset” button to reset the relay.
5. Restart the machine.
6. If the problem persists, refer to the Workcell Installation Guidelines Troubleshooting
Maintenance Manual or contact PVA Customer Service for more information.
15.4 Pneumatic Error Recovery Procedure
The system’s pneumatics are checked for errors every time they operate. The pneumatics
must be in their home position before the axes can home or move to the standby position.
If a pneumatic fails, an error will be shown.
Figure 118: Pneumatic Error Example
1. Find the cause of the problem.
2. Correct the problem.