Hypertherm HPR800XD Auto Gas Rev.2 - Manual (Page 77)

InstallatIon
HPR800XD Auto Gas – 806500 3-37
Examples of input circuits
Output from
CNC/PLC
External relay
(AC or DC)
1. Relay interface
+24 VDC (See note 4 on page 3-35)
HPR
Power
ground
2. Optocoupler interface
CNC/PLC
+24 VDC
HPR
Power
ground
Transistor-output
optocoupler
12-24 VDC
CNC/PLC +24 VDC
HPR
Power
ground Power
ground
Active-high drive
3. Amplified-output interface
Note: The external relay’s life may be improved by adding a
metallized-polyester capacitor (0.022 µF 100 V or higher)
in parallel with the relay contacts.