IAI RoboNet Operation Manual page 2

24-V Power Supply to Be Certified For UL Standards
Please see below for the 24-V power supply condition for UL certification.
• For UL certification, class2 power supply is required based on NEC NFPA 79 (Electrical Standard for Industrial Machinery).
• If a single class2 power supply unit is insufficient to provide enough power, use multiple class2 power supply units.
At that time, follow the (example) below for the wiring layout. Also, 0-V line to each power supply is required to be common.
R unit
Power
Supply
Simple
unit absolute
R unit
Power
Supply
Simple
unit absolute unit
R unit
Power
Supply
CAUTION
Simple
unit absolute
R unit
unit