Hypertherm HPR260 Manual Gas Preventive Maintenance Program Rev.5 - Manual (Page 76)

INSTALLATION
HPR260 Auto Gas Instruction Manual 3-27
3
Examples of input circuits
Output from
CNC/PLC
External relay
(AC or DC)
1. Relay interface
+24 VDC
HPR
Power
ground
2. Optocoupler interface
CNC/PLC
+24 VDC
HPR
Power
ground
Transistor-output
optocoupler
12V-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 (0.022µF 100V or higher) in
parallel with the relay contacts.