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Power Brick Controller User Manual
Special Functions & Troubleshooting
189
Digital Quadrature
With digital quadrature encoders (must be differential) the encoder loss circuitry monitors each quadrature
input pair with an exclusive-or XOR gate:
In normal operation mode, the two quadrature inputs should be in opposite logical states – that is one high
and one low – yielding a true output from the XOR gate.
When there is no longer a proper signal driving the inputs on the interface, both lines are pulled to a high
logical level internally, so the XOR gate outputs a low level indicating encoder loss.
The flag reflecting the encoder loss status is found in the Power Brick bit element
PowerBrick[].Chan[].LossStatus
:
= 0 in normal mode.
= 1 (and latched) upon detecting an encoder loss
Automatic Kill Action for Quadrature Encoders
Arming the automatic kill action with quadrature encoders:
In this mode, the status of the encoder loss can be monitored in the motor status window in the IDE software
or using the motor element bit
Motor[].EncLoss
.
Note
Setting
Motor[].pEncLoss
= 0 disables the automatic kill action.
PTR
Enc1LossBit->PowerBrick[0].Chan[0].LossStatus;
PTR
Enc2LossBit->PowerBrick[0].Chan[1].LossStatus;
PTR
Enc3LossBit->PowerBrick[0].Chan[2].LossStatus;
PTR
Enc4LossBit->PowerBrick[0].Chan[3].LossStatus;
PTR
Enc5LossBit->PowerBrick[1].Chan[0].LossStatus;
PTR
Enc6LossBit->PowerBrick[1].Chan[1].LossStatus;
PTR
Enc7LossBit->PowerBrick[1].Chan[2].LossStatus;
PTR
Enc8LossBit->PowerBrick[1].Chan[3].LossStatus;
Motor[
1
].pEncLoss = PowerBrick[
0
].Chan[
0
].Status.a
Motor[
1
].EncLossBit =
28
Motor[
1
].EncLossLevel =
1
// High true fault
Motor[
1
].EncLossLimit =
0
Содержание PBC Series
Страница 5: ......
Страница 74: ...Power Brick Controller User Manual Connections and Software Setup 74 Motor 1 HomeOffset 0...
Страница 203: ...Power Brick Controller User Manual Appendix A Digital Inputs Schematic 203 APPENDIX A DIGITAL INPUTS SCHEMATIC...
Страница 204: ...Power Brick Controller User Manual Appendix B Digital Outputs Schematic 204 APPENDIX B DIGITAL OUTPUTS SCHEMATIC...
Страница 205: ...Power Brick Controller User Manual Appendix C Analog I Os Schematics 205 APPENDIX C ANALOG I OS SCHEMATICS...
Страница 206: ...Power Brick Controller User Manual Appendix C Analog I Os Schematics 206...
Страница 207: ...Power Brick Controller User Manual Appendix D Limits Flags Schematic 207 APPENDIX D LIMITS FLAGS SCHEMATIC...