Cabling the Switch
This section discusses the following topics:
Grounding the Switch
After mounting the switch into the rack, connect the switch to the data center ground.
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.
Models without Grounding Pads
For models that do not have grounding pads, use an adapter as shown for the DCS-7050SX3-96YC8 (Figure 1 - Earth Grounding Adapter for Models such as DCS-7050SX3-96YC8). Assemble an adapter to attach to the chassis (Grounding Adapter Assembly). Once the grounding lug is attached to the adapter, attach it to the chassis.

Ground Adapter Assembly

Connecting Power Cables
The following are directions for connecting the power cables.
Installation of this equipment must comply with local and national electrical codes. Consult with the appropriate regulatory agencies and inspection authorities to assure compliance if necessary.
Read all installation instructions before connecting the system to the power source.
This equipment must be grounded. Never defeat the ground conductor.
This unit requires overcurrent protection.
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.
Lire toutes les instructions d'installation avant de brancher le système à la source d'alimentation.
Cet équipement doit être mis à la terre. Ne jamais modifier le conducteur de terre.
Cet appareil requiert une protection contre les surintensités.
The following AC power supply is supported. Up to four power supplies can power the switch.
PWR-1021-AC-RED
Power requirements vary by switch. Refer to Table 4 - Switch Specifications (Power Draw) for information regarding your specific system. Connect each AC power supply to a circuit that provides the required power.
The Rear Panel displays the location of the power supplies on the switch's rear panel.
Remove all power cords and wires from the power supplies to turn off the switch.
Input power and power supply redundancy depend on the actual system power draw.
Connect each power supply to its input overcurrent protection for maximum Input Power redundancy.
For power supply redundancy, at least one more power supply should be installed than is required to power the system. The Switch Specifications (Power Draw) display the AC power supply.

1 |
PSU handle |
2 | PSU status LED | 3 | Release |
The accessory kit provides IEC-320 C15 to C16 power cables.
DC Power Supplies
The following DC power supplies are supported.
PWR-521-DC-RED

A disconnect device must be provided as part of the installation.
Ensure power is removed from DC circuits before performing any installation actions. Locate the disconnect device, circuit breakers or fuses on DC power lines servicing the circuits. Turn off the power line circuits or remove the fuses.
Wire size must comply with local and national requirements and electrical codes. Use only copper wire.
Apply ground connection to the switch first during installation and remove last when removing power.
Un dispositif de sectionnement doit être fourni dans le cadre de l'installation.
Pouvoir assurer qu'il est retiré de circuits DC avant d'effectuer des actions d'installation . Localiser les disjoncteurs ou des fusibles sur les lignes de courant continu desservant les circuits. Coupez les circuits de lignes d'alimentation ou retirer les fusibles.
Le calibre du fil doit être conforme aux exigences locales et nationales et les codes électriques. Utiliser du fil de cuivre.
Appliquer connexion à la terre à l'interrupteur premier lors de l'installation et de supprimer la dernière alimentation lors du débranchement.
Wire and Lug Preparation
Before performing any installation actions, ensure power is removed from DC circuits by turning off the power line servicing the circuits. Prepare the stranded wiring before you begin a DC power installation.
Connecting a DC Power Supply to Power Source
To connect a DC power supply to power source:
Connecting Serial and Management Cables
The accessory kit includes the following cables:
- RJ-45 to DB-9 serial adapter cable.
- RJ-45 Ethernet cable.
The following RJ-45 to DB-9 Connections table lists the pin connections of the RJ-45 to DB-9 adapter cable.
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 |

1 |
Ethernet management port |
2 | USB port | 3 | Console serial port |
Connect the front panel 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: Use the USB port for software or configuration updates.
Important:
Excessive bending can damage interface cables, especially optical cables.
Flexion excessive peut endommager les câbles d'interface, notamment des câbles optiques.