Cabling the Switch
4.1 Grounding the Switch
After mounting the switch into the rack, connect the switch to the data center ground. Figure 4-1 displays the location of the grounding lug on the front, left mounting ear for the DCS-7020SR-32C2.
Important! Grounding wires and grounding lugs (M4 x 0.7) are not supplied. Wire size should meet local and national installation requirements. Commercially available 6 AWG wire is recommended for installations in the U.S

À la terre et de mise à la terre fils cosses (M4 x 0.7) ne sont pas fournis. Calibre des fils doit satisfaire des exigences de l’installation locale et nationale. Disponible dans le commerce 6 fils AWG est recommandé pour les installations aux États-Unis.
Figure 4-1: Earth Grounding Pad Sockets for DCS-7020SR-32C2
4.2 Connecting Power Cables
Important! Installation of this equipment must comply with local and national electrical codes. If necessary, consult with the appropriate regulatory agencies and inspection authorities to ensure compliance.

Installation de cet équipement doit être conformes aux codes électriques locaux et nationaux. Si nécessaire, consulter les organismes de réglementation appropriés et des autorités de contrôle pour assurer la conformité.
The switch operates with two installed power supplies. At least one power supply must connect to a power source. Two circuits provide redundancy protection. Figure 4-1 displays the location of the power supplies on the front panel of the switch.
Important! Read all installation instructions before connecting the system to the power source.

Lire toutes les instructions d’installation avant de brancher le système à la source d’alimentation.
Non-Redundant Configuration: Connect power to either of the two power supplies.
Redundant Power Supply Configuration: Connect power to both power supplies.
Power down the Switch: Remove all power cords and wires from the power supplies.
Important! This equipment must be grounded. Never defeat the ground conductor.

Cet équipement doit être mis à la terre. Ne jamais modifier le conducteur de terre.
Important! This unit requires overcurrent protection.

Cet appareil requiert une protection contre les surintensités.
4.2.1 AC Power Supplies
The following AC power supplies are supported.
PWR-400AC
Figure 4-2 displays an AC power supply. It connects to a circuit that provides the required power, as specified by Table 1-4.
Figure 4-2: AC Power Supply (PWR-400AC)
The power supplies require power cables that comply with IEC-320 and have a C13 plug. The accessory kit provides two IEC-320 C13 to C14 power cables.
Important! Apply ground connection to the switch first during installation and remove last when removing power.

Appliquer connexion à la terre à l'interrupteur premier lors de l'installation et de supprimer la dernière alimentation lors du débranchement.
4.3 Connecting Serial and Management Cables
The accessory kit includes the following cables:
RJ-45 to DB-9 serial adapter cable.
RJ-45 Ethernet cable.
Table 4-1 lists the pin connections of the RJ-45 to DB-9 adapter cable.
Table 4-1 RJ-45 to DB-9 Connections
RJ-45
DB-9
 
RJ-45
DB-9
RTS
1
8
CTS
 
GND
5
5
GND
DTR
2
6
DSR
 
RXD
6
3
TXD
TXD
3
2
RXD
 
DSR
7
4
DTR
GND
4
5
GND
 
CTS
8
7
RTS
Note RJ-45 to DB-9 connections: RJ-45 pin 1 (RTS) is connected to RJ-45 pin 8 (CTS); RJ-45 pin 2 (DTR) and RJ-45 pin 7 (DSR) are not electrically connected to any signal.
Figure 4-3 displays the management, console, and USB ports on the front panel
Figure 4-3: Management Ports
 
Connect the ports as follows:
Console (Serial) Port: Connect to a PC with the RJ-45 to DB-9 serial adapter cable.
The switch uses the following default settings:
9600 baud
No flow control
1 stop bit
No parity bits
8 data bits
Ethernet Management Port: Connect to 10/100/1000 management network with RJ-45 Ethernet cable.
USB Port: The USB port may be used for software or configuration updates.
Note The DCS-7020SR-32C2 chassis has other ports labeled as Alarm, Clk in, Clk Out and ToD. These ports are not supported. Do not connect any cables to these ports.
Caution Excessive bending can damage interface cables, especially optical cables.

Flexion excessive peut endommager les câbles d’interface, notamment des câbles optiques.