Cabling the Switch

The Cabling the Switch section reviews the following topics:

Grounding the Switch

Describes grounding the device to the data center ground.

After mounting the switch into the rack, connect the switch to the data center ground. The following figure shows the grounding location and the power sockets for the 7010T-48 and 7010TX-48 switches.

Figure 1. Grounding Points and Power Sockets for 7010T-48 and 7010TX-48 Switches

1 Power supply module 1

4

Air exit indicator (Red label)

 7 Air vent
2 Grounding location 5 Fan module handle    
3 Power supply module 2 6 Air inlet indicator (Blue label)    

 

The following figure shows the grounding location and the power terminals for the 7010T-48-DC and 7010TX-48-DC switches.

Figure 2. Grounding Points and Power Terminals for 7010T-48-DC and 7010TX-48-DC Switches

1 Power supply module 1 4 Power supply module 2
2 PSU 1 cover 5 Grounding location
3 PSU 2 cover 6 Air inlet indicator (Blue label)

 

The switches operate with two internal power supplies. At least one of the supplies must connect to a power source. Two circuits provide redundancy protection.

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.

 

Grounding Lug Preparation

The following procedure describes the lug preparation to connect the chassis to the data center ground:

  1. Prepare the (stranded) copper wiring for the ground wire.
  2. Use agency-approved compression (pressure) lugs for wiring terminations.
  3. Slip on heat-shrink tubing on the wire end before assembling the lugs on to the wire.
  4. Crimp the lugs with the proper tool, and ensure that the tubing extends over the barrel of the lug and the insulation on the wire as shown in the following figure.
    Figure 3. Lug Preparation

    1 Insulated wire A 1/4”
    2 Heat-shrink tubing B 1/2”
    3 Lug C 5/8”

     

  5. Shrink the tubing with a heat gun.

Connecting Power Cables

Describes the installation requirements for connecting the power cables to the device.

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.

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.

 

Connecting AC Power

Describes how to connect the AC power supply to the device.

Power requirements vary by switch. Refer to Table 3 for information regarding your specific switch.

Rear Panel shows the location of the power supply connections on the rear panel of the switch.

Power Configurations

  • Non-redundant: Connect power to either of the two power supplies.
  • Redundant: Connect each AC power supply to a separate circuit that provides the required power.
Note:

To power down the Switch, remove all power cords and wires from the power supplies.

Input power and power Supply redundancy is dependent on the actual system power draw.

For maximum Input Power redundancy, each power supply should be connected to its own input overcurrent protection.

Power supplies use cables that comply with IEC-320 and have a C13 plug. The accessory kit provides two IEC-320 C13 to C14 power cables.

 

Connecting DC Power

Describes how to connect the DC power supply to the device.

Power requirements vary by switch. Refer to Table 3 for information regarding your specific switch.

Rear Panel displays the location of the power supplies on the rear panel of the switch. There is a cover over the DC supply terminals.

Important:

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.

Power Configurations

  • Non-redundant: Connect power to either of the two power supplies.
  • Redundant: Connect each DC power supply to a circuit that provides the required power.

 

Connecting DC Power Supply to Power Source

Describes how to connect the DC power supply to the power source.

Important:

Wire size must comply with local and national requirements and electrical codes. Use only copper wire.

Apply the ground connection first during installation and remove last when removing power.

 

 

Calibre doit respecter les exigences locales et nationales et les codes de l’électricité. Utiliser seulement du fil de cuivre.

Appliquer le motif connexion tout d’abord pendant l’installation et supprimer dernière lors du retrait de puissance.

 

To connect a DC power supply to the power source perform the following:

  1. Remove the terminal cover to expose the connectors on the terminal block on the face.
  2. Attach the appropriate lugs to the source DC wires.

    Use DC cables with either insulated crimp-on spade lugs or insulated crimp-on ring connectors.

  3. Connect the DC-input wires to the terminal block in this order:
    1. Ground cable to the ground connector on the face of the power supply.
    2. Negative (–) source DC cable to the negative (–) connector on the terminal block.
    3. Positive (+) source DC cable to the positive (+) connector on the terminal block.
    4. Torque the screws as specified in the following table.
      Table 1. Wiring, Lug, and Tightening Torques for DC PSUs

      Switch

      		 Wire Size Lug Type Tightening Torque
      (AWG) (mm2) N∙m in∙lbs
      DCS-7010T-48-DC 12 to 22 3.3 to 0.33 ring1 0.8 7.0
      DCS-7010TX-48-DC 14 to 18 1.5 to 0.75 ring1 0.8 7.0

      1 Single #6 hole

  4. Replace the terminal cover.

 

Connecting Serial and Management Cables

Cables required to connect the device.

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 table lists the pin connections of the RJ-45 to DB-9 adapter cable.

Table 2. 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

 

Figure 4. Front Panel Ports

1

Console serial port

2

Ethernet management port

3

USB 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: The USB port may be used 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.