Post by Hendrickson on Jun 13, 2014 18:49:27 GMT
!! This troubleshooting tip is a work in progress
[Basic Photo-Eye Info]
1) All Emitters are on the left as you drive into the wash. Think of the emitter as the light source, or flashlight, or laser.
2) All Receivers are on the Right. Think R is for right, and for receivers. The receiver is the eye that senses the light and sends the clear or blocked signal to the plc.
3) They operate on 24VDC. The green indicator on on the top of the Emitter and Receiver photo-eye indicates that they are powered up.
4) All the Photo-Eyes (PEs) supplied with the Accutrac 360 are Light Operate PEs. This means that the input to the plc is ON when the photo-eye is clear.
Additionally, the amber indicator on the top of the receiver illuminates to indicate that it sees the beam and that they are not blocked.
[Troubleshooting]
[It is working]
Does the status of the Input on the I/O View page change when you block and unblock the photo-eye?
When the amber light on the receiver is ON, then the box next to the PE input on the i/o view page should be illuminated as well.
And conversely, amber light off, input on i/o view page off.
[Power]
Are the emitter and receiver both getting power?
Ensure that the Green Lights are lit on both the Emitter and the Receiver. If no, then refer to troubleshooting 24VDC power.
[Blocked/Clear]
Is the Amber light illuminated on the Receiver PE?
If you block the receiver, the Amber light should go out. Conversely, when you unblock the PE, the Amber light should illuminate.
If no, then you could have one of the following scenarios:
1) a bad photo-eye receiver
2) bad emitter PE
3) bad disconnect cable on the photo-eye
4) dirty lens
5) mis-aligned emitter and receiver
[Human Machine Interface (HMI) aka the computer]
Ensure that you don't see a "PLC Not Running" flag on the HMI screen.
Ensure that you don't see a "PLC Comm Loss" flag on the HMI screen.
[Multiple PEs not working]
Unplug all of the emitters. Test each emitter and receiver combo one by one. Write down the results after each test.
If an emitter receiver combination doesn't work, you can try the "does the problem follow the swap" method of troubleshooting.
[Basic Photo-Eye Info]
1) All Emitters are on the left as you drive into the wash. Think of the emitter as the light source, or flashlight, or laser.
2) All Receivers are on the Right. Think R is for right, and for receivers. The receiver is the eye that senses the light and sends the clear or blocked signal to the plc.
3) They operate on 24VDC. The green indicator on on the top of the Emitter and Receiver photo-eye indicates that they are powered up.
4) All the Photo-Eyes (PEs) supplied with the Accutrac 360 are Light Operate PEs. This means that the input to the plc is ON when the photo-eye is clear.
Additionally, the amber indicator on the top of the receiver illuminates to indicate that it sees the beam and that they are not blocked.
[Troubleshooting]
[It is working]
Does the status of the Input on the I/O View page change when you block and unblock the photo-eye?
When the amber light on the receiver is ON, then the box next to the PE input on the i/o view page should be illuminated as well.
And conversely, amber light off, input on i/o view page off.
[Power]
Are the emitter and receiver both getting power?
Ensure that the Green Lights are lit on both the Emitter and the Receiver. If no, then refer to troubleshooting 24VDC power.
[Blocked/Clear]
Is the Amber light illuminated on the Receiver PE?
If you block the receiver, the Amber light should go out. Conversely, when you unblock the PE, the Amber light should illuminate.
If no, then you could have one of the following scenarios:
1) a bad photo-eye receiver
2) bad emitter PE
3) bad disconnect cable on the photo-eye
4) dirty lens
5) mis-aligned emitter and receiver
[Human Machine Interface (HMI) aka the computer]
Ensure that you don't see a "PLC Not Running" flag on the HMI screen.
Ensure that you don't see a "PLC Comm Loss" flag on the HMI screen.
[Multiple PEs not working]
Unplug all of the emitters. Test each emitter and receiver combo one by one. Write down the results after each test.
If an emitter receiver combination doesn't work, you can try the "does the problem follow the swap" method of troubleshooting.