Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 232)

Section 4D
Power Distribution and Wiring Guidelines
4D-2
This section discusses the connections of the main power supply and the
operator panel power supply.
Connecting the Main Power Supply to AC Power Source
ATTENTION: To guard against electrical shock hazards, never
make connections or disconnections at the ac distribution
network unless the main ac disconnect switch is open and
locked.
Important: In addition to supplying power to the operator panel power
supply, the main power supply also supplies power to the motherboard,
the CPU board, and the servo module(s) (9/260 and 9/290 only). As
shown in Figure 4D.2, the power cables for these modules originate from
the side of the main power supply (for 9/260 and 9/290).
Refer to Figure 4D.2 while performing these steps:
1. Locate AC-IN, L1, L2, and PE on terminal block BT04.
2. Connect the ac power source cable (C02) from the external ac power
source to AC-IN, L1, L2, and PE on BT04.
3. Connect the chassis ground terminal to the cabinet’s grounding bus bar.
Important: The chassis ground terminal connects to the control chassis
and designated cable shields. Power supply common is AC coupled to
chassis ground. It is the users responsibility to determine if a direct
connection to cabinet ground bus is required.
4D.1
Connecting the Main Power
Supply