Omron MD-900 User Manual page 112

3 Installation
Improper installation or wiring misconfiguration of the Power Supply Box could result
in electrical shock hazard. You must ensure the safe and proper installation of the
Power Supply box in accordance with the applicable rules and regulations, and by
qualified personnel.
Other important electrical considerations are listed below.
• The minimum wire rating for user-supplied connections inside the electrical access panel and the
AC supply are 10 AWG / 600 V.
• Power is provided to several power supplies inside the Power Supply Box as 3 distinct phases de-
rived from a 3-phase input.
• The power supplies can withstand up to 305 VAC (nominal 277 VAC) on any given phase.
• Configuration depends on a 3-phase scheme and voltage.
• Earth ground is separate and always only connects to the ground distribution block.
• White wires (shown in gray in illustration below) are used to configure Delta or WYE input. The white
wires might also jump to field neutral via the neutral terminal block. All white jumper wires are pro-
vided with Power Supply Box.
• The neutral terminal block can be used to terminate the abandoned neutral wire or aid in neutral
jump to the AC input terminal block.
• All field phase wires must connect to the Main Disconnect Switch.
• 4 wire Delta (jumper configuration as Delta) supports 200 to 240 VAC.
• 5 wire WYE (jumper configuration as WYE) supports 380 to 480 VAC line to line.
• 5 wire WYE (jumper configuration as Delta) supports 200 to 277 VAC line to line.
Use the figures below to understand the 3-phase wiring configuration options.
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WARNING
AMR (Autonomous Mobile Robot) MD-series Platform User's Manual (I681)