Spectrum+Operating+Manual.pdf - 第144页

S2-9 XX X Se ri es Disp ensi n g Syst em IOM Man ual Troubleshoo ting 7-6 © 2023 Nordson Corporatio n 7.4.6 Mechanical/Tactil e Height Senso r Tab le 7-6 Height Sensor Trouble sh ooting Sy mptom P os si ble Cause Recover…

100%1 / 222
S2-9XXX Series Dispensing System IOM Manual Troubleshooting
© 2023 Nordson Corporation 7-5
7.4.4 Fluidmove Startup
Table 7-4 Fluidmove Startup
Symptom
Possible Cause
Recovery
“The Dispenser ACLPlus
Device Failed to Respond”
message appears
Communications failure.
Verify COM port settings and serial communications
cables are attached. Restart computer and retry.
USB communications failure.
The USB hub may have failed or lost power. The
laptop PC communicates to system devices via the
USB hub. Check the USB connection and ensure
the USB hub is connected to its power source on
outlet AC4 from the power manager.
Main PWA NVRAM failure.
1. Replace battery and reinitialize Main PWA
memory.
2. Run escape sequences and reload machine
specific personalities. Refer to the system’s ACL
recovery disk.
Main PWA failure.
1. Check main PWA’s “Heartbeat” to see if board is
functioning. Cycle power and retry.
2. Replace fuse, see 8.16 Replacing Fuses.
No dispensing head
motion
No system power. See Table 7-1.
Interlock open. Restore Interlock, see 2.13.1 Interlock Recovery.
Home cable disconnected. Connect cable.
Dispensing head fails to
find home
Obstruction preventing machine
motion, and the servo system
goes open loop.
Remove obstruction.
Home switch failure.
Inspect and adjust home flag and retry. Replace
home switch if broken.
7.4.5 Laser Height Sensor
Table 7-5 Laser Height Sensor Troubleshooting
Symptom Possible Cause Recovery
Height Sensor does not
power up
Height sensor is not plugged in.
Check power connection and verify that height sensor
plugged in.
Bad resistor on the main board
d-sub connection.
Use a multimeter to verify that the main board d-sub
resistor is good.
Height Sensor does not
trigger
Dip switches not set properly.
Verify that dip switch number 6 on SW1 on the main
board is set to on.
Height sensor lens is dirty. Check and clean the height sensor lens.
No communication with PC. Verify I/O tools can toggle height sensor bits.
Intermittent function Loose or frayed cables. Check cables for tight connection and wear.
S2-9XXX Series Dispensing System IOM Manual Troubleshooting
7-6 © 2023 Nordson Corporation
7.4.6 Mechanical/Tactile Height Sensor
Table 7-6 Height Sensor Troubleshooting
Symptom Possible Cause Recovery
Probe does not drop or
retract
Probe is damaged.
Check for bent probe. Replace if necessary, see 8.10.2
Replacing the Mechanical/Tactile Height Sensor Probe.
No air pressure. Verify main air pressure is ON (I).
Pneumatic hose is kinked or
pinched.
Check pneumatic lines.
Probe either drops too
slowly or slams down with
too much force
Main air pressure not set
properly.
Readjust main air pressure regulator to system’s
nominal pressure.
Pneumatic hose is kinked or
pinched.
Check pneumatic lines.
Needle hits substrate
Probe tip is lower than the
needle tip when valve is in
dispensing position.
Adjust probe and perform “Valve Offsets” in Fluidmove,
see 5.12 Adjusting the Height Sensor Probe (Option).
Refer to the Fluidmove User Guide or Fluidmove
Online Help.
The height sensor is not set up
properly.
Test the height sensor. Fluidmove provides a height
sensor test utility from the Tools > Diagnostics
menu.
The probe can be toggled up and down to verify probe
functionality. There is also a test procedure that
captures HS trigger values. Fluidmove can display a
statistical analysis of the captured values.
HS velocity is set too high.
Reduce the HS velocity to 2 inches per second and re-
run the valve offsets. Test the height sensor from the
diagnostics menu if necessary.
Probe hits substrate
before it is fully extended
Safe Z height too low.
Reteach safe Z height. Refer to the Fluidmove User
Guide or Fluidmove Online Help.
Retract distance too low.
Reteach the retract distance in the height sensor setup.
Refer to the Fluidmove User Guide or Fluidmove
Online Help.
7.4.7 Needle Heater
Table 7-7 Needle Heater Troubleshooting
Symptom Possible Cause Recovery
No needle heat
Set Point (SP) value below
Present Value (PV) or the
heater is in an idle state.
Change the SP value within the Heater Controls
window. Refer to the Fluidmove User Guide or
Fluidmove Online Help.
Disconnected heater.
Verify the needle heater cable connections are
securely attached to the correct ports.
Failed DHC power.
Verify DHC indicator lights for 3.3V, -12V, and 12V
are illuminated.
Failed heater.
Verify the needle heater electrical parameters. The
resistance between pins 4 and 5 for the heating
element should be 100 ohms +/- 5 ohms. The
resistance of the RTD sensor between pins 6 and 7
should be 108 ohms, +/- 5 ohms.
S2-9XXX Series Dispensing System IOM Manual Troubleshooting
© 2023 Nordson Corporation 7-7
7.4.8 Pneumatic
Table 7-8 Pneumatic Troubleshooting
Symptom Possible Cause Recovery
No air pressure
Failed main air solenoid.
With Fluidmove initialized, go to the Tools Menu, then
IO, and toggle the command button for the main air
solenoid. The valve and fluid air buttons are also
accessible from this menu.
System not connected to
facility air supply.
Check the main air inlet at the rear of the system.
Main air regulator closed. Verify the main air regulator is set properly.
Fluidmove not started.
Fluidmove must be running to initialize the machine
pneumatics.
No fluid pressure
Air pressure setting incorrect.
Make sure the fluid pressure regulator is set to the
proper air pressure.
Incorrect bit mask.
Contact Asymtek Technical Support for correct bit
mask values that control the pneumatic states for the
particular fluid delivery system being used.
Syringe disconnected.
Connect the syringe receiver head to the fluid (silver
fitting) port on the dispensing head.
Fluidmove not started.
Start Fluidmove. Refer to the Fluidmove User Guide or
Fluidmove Online Help.
No valve pressure
Air pressure setting incorrect.
Make sure valve pressure regulator is set to the proper
air pressure.
Incorrect bit mask.
Contact Asymtek Technical Support for correct bit
mask values that control the pneumatic states for the
particular fluid delivery system being used.
Valve disconnected.
Connect the syringe receiver head to the valve (black
fitting) port on the dispensing head.
Fluidmove not started.
Start Fluidmove. Refer to the Fluidmove User Guide or
Fluidmove Online Help.