Hypertherm HPR260 Manual Gas Preventive Maintenance Program Rev.5 - Manual (Page 74)

INSTALLATION
HPR260 Auto Gas Instruction Manual 3-25
5
Caution: The CNC cable must be constructed using cable with 360-degree shield and
metal housing connectors at each end. The shield must be terminated to the
metal housings at each end to ensure proper grounding and to provide the
best shield.
Notes to CNC interface cable run list
Note 1. I nputs are optically isolated. They require 24 VDC at 7.3 mA, or dry-contact closure. 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
Note 2. Outputs are optically isolated, open collector, transistors. The maximum rating is 24 VDC at 10 mA.
Note 3. Machine motion is selectable and is used for configurations with multiple plasma systems.
Note 4. CNC +24 VDC provides 24 VDC at 200 mA maximum. A jumper is required on J304 to use 24 V power.