Hypertherm MicroEDGE Pro Shape Cutting Control Rev.2 - Manual (Page 62)

InstallatIon
2-14 MicroEDGE Pro Instruction Manual 807290
Encoder voltage options on the Picopath interface
The Picopath interface in the MicroEDGE Pro is similar to and compatible with the Picopath interface in an EDGE or
MicroEDGE CNC except that the MicroEDGE Pro Picopath interface provides jumper settings that allow the user to
select how the field power supply voltages are routed on the board.
The jumper is set to 5 VDC sourced encoder power in the factory and uses the MicroEDGE Pro internal field power
supply to power the encoder, analog, and 24 I/O circuits.
The drive/encoder and I/O connections on the back of the Picopath interface provide voltages that you can use to
power an external encoder, provide analog power to a drive, or provide DC power for the cutting system’s I/O.
Encoder power is frequently used in DC drive systems because the motors’ encoder is usually wired directly to the
drive/encoder connector of the CNC. Most modern encoders use 5 VDC for power while older cutting systems use
12 VDC for encoder power. The jumper blocks on the MicroEDGE Pro Picopath interface allow you to replace an older
CNC with the MicroEDGE Pro CNC without having to replace encoders or to rewire the drive circuit of the cutting
system.
Encoder jumper options
The encoder jumper blocks allow you to chose between 5 V encoders, 12 V encoders, or to supply external voltages to
the MicroEDGE Pro. The jumper must be installed on one of these encoder jumper blocks.
5 V sourced encoders use the MicroEDGE Pro internal field power supply to provide 5 VDC on pin 2 of each
drive/ encoder connector to power an external encoder. It also puts 5 VDC on the pull-up resistor for each encoder input
signal. This voltage should match the signal voltage of the encoder channels.
12 V sourced encoders use the MicroEDGE Pro internal field power supply to provide 12 VDC on pin 2 of each
drive/ encoder connector to power an external encoder. It also puts 12 VDC on the pull-up resistor for each encoder
input signal. This voltage should match the switching voltage of the motor’s encoder.
External encoder voltage provides the MicroEDGE Pro with field power to supply encoder power (5 VDC or 12 VDC),
voltage on the pull-up resistor on the encoder channel, drive analog power (+/- 12 VDC), and I/O power (24 VDC) to
the Picopath interface. This option is common when a MicroEDGE Pro CNC is replacing a CNC that did not have an
internal field power supply (D80).