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Power Brick Controller User Manual
Connections and Software Setup
108
Note
A jumper tying pins 1 and 2 is the default configuration. This is the
configuration in which the Power Brick Controller is shipped.
Note
The controller (PMAC) 5 VDC logic is independent of this scheme,
so if no encoder power is provided the PMAC will remain powered-
up (provided the standard 24 volts is brought in).
Functionality, Safety Considerations
There are a couple of safety and functionality measures to take into account when an external encoder
power supply is utilized:
Power sequence: encoders versus controller/drive
It is highly recommended to power up the encoders before applying power to the Power Brick
Controller
Encoder Power Loss (i.e. power supply failure, loose wire/connector)
The Power Brick Controller, with certain feedback devices, can be set up to read absolute position or
perform phasing on power-up (either automatic firmware functions, or user written PLCs). If the encoder
power is not available, these functions will not be performed properly. Trying to close the loop on a motor
without encoder feedback could be dangerous.
Caution
Make sure that the encoders are powered-up before executing any
motor/motion commands.
Losing encoder power can lead to dangerous runaway conditions; setting up encoder loss protection, fatal
following error limits, and I2T protection are highly advised.
Caution
Make sure that the encoder loss protection is active, fatal following
error limit is set tightly, and I2T is configured.
With Commutated motors (i.e. DC brushless), a loss of encoder generally breaks the commutation cycle
causing a fatal following error or I2T fault either in PMAC or Amplifier side. However, with non-
commutated motors (i.e. DC brush), losing the encoder signal can more likely cause dangerous runway
conditions.
Содержание PBC Series
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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...