Chapter 3 Installation 47
NetSure 801 CA7 Power Supply System (New Skelecton) User Manual
A amplication
Monitoring board
To monitoring module
in rectifier rack
(To monitoring ports of
other distribution cabinets)
Figure 3-32 Connection of communication cable in AC distribution cabinet
A
A amplication
Monitoring board
To monitoring module
in rectifier rack
(To monitoring ports of
other distribution cabinets)
Figure 3-33 Connection of communication cable in DC distribution cabinet
3. When the system has multiple AC cabinets or DC cabinets, connect the RS485 cables between cabinets according
to Figure 3-34. If the cabinet number is different from Figure 3-34, increase or decrease the parallel cables between
cabinets according to Figure 3-34. The connection of RS485 cable should use bus type wiring, and the controller is
always located at the first end or the end of the circuit.
Connecting 48V DC auxiliary power source cable of monitoring board in AC cabinet
Connect one end of the
power cable in the accessories to the terminal with “AC cabinet -48V” label on the AC cabinet.
And connect the other end to the terminal with “AC cabinet -48V” label on the DC cabinet. Pay attention to the two
poles of power and the cable color which must be corresponded (black to black, brown to brown). Each AC cabinet
corresponds to a DC cabinet, as shown in Figure 3-34.