Table Of Contents
Electrostatic Discharge and Grounding Guide for Cisco ONS 15454, ONS 15310-MA, ONS15310-CL, and ONS 15600
Preparing Your Location
Preparing the Rack Room
Preparing Yourself
Locating and Grounding the Chassis
Locating and Grounding Cisco ONS 15454 ANSI Chassis
Locating and Grounding Cisco ONS 15454 ETSI Chassis
Locating and Grounding Cisco ONS 15310-MA ANSI and ONS 15310-MA ETSI Chassis
Locating and Grounding Cisco ONS 15310-CL ANSI Chassis
Locating and Grounding Cisco ONS 15600 ANSI and ONS 15600 ETSI Bay Assembly
Installing the Line Cards
Preparing the Work Surface for Installing Line Cards
Transporting Line Cards
Handling Line Cards
Removing and Installing Line Cards
Electrostatic Discharge and Grounding Guide for Cisco ONS 15454, ONS 15310-MA, ONS15310-CL, and ONS 15600
February 2009, 78-18960-01
This document uses illustrations to explain the workflow recommended by Cisco for grounding the Cisco ONS 15454 ANSI, ONS 15454 ETSI, ONS 15310-MA ANSI, ONS 15310-MA ETSI, ONS 15310-CL ANSI, ONS 15600 ANSI, and ONS 15600 ETSI chassis. It also explains best practices to be followed to prevent electrostatic discharge (ESD) damage, which can occur when equipments are improperly handled.
Note 
The instructions in this document also applies to the Cisco ONS DWDM platform.
The following sections are included in this document:
•Preparing Your Location
•Preparing the Rack Room
•Preparing Yourself
•Locating and Grounding the Chassis
•Installing the Line Cards
Preparing Your Location
This section illustrates how the building that houses the chassis must be properly grounded to the earth ground. (Figure 1)
Warning This product requires short-circuit (overcurrent) protection to be provided as part of the building installation. Install only in accordance with national and local wiring regulations. Statement 1045.
Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022.
Figure 1 Building with Rack Room Connected to Earth Ground
Preparing the Rack Room
This section explains how the rack enclosures must be properly connected to the building earth ground. It also illustrates how to keep the chassis in a sealed antistatic bag until you are ready to install it. (Figure 2)
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003.
Figure 2 Rack Room Connected to Earth Ground
Preparing Yourself
This section illustrates how to prepare yourself before removing the chassis from the sealed antistatic bag. Figure 3 illustrates how to cuff the ESD strap around the wrist and the ground cord that connects the cuff to the ground. ESD wrist straps are the primary means of controlling static charge on personnel.
Figure 3 Wearing the ESD Strap
Figure 4 illustrates how you must be properly grounded before handling the chassis.
Figure 4 Handling the Chassis
Locating and Grounding the Chassis
This section explains how to locate and ground the following Cisco ONS chassis:
•Locating and Grounding Cisco ONS 15454 ANSI Chassis
•Locating and Grounding Cisco ONS 15454 ETSI Chassis
•Locating and Grounding Cisco ONS 15310-MA ANSI and ONS 15310-MA ETSI Chassis
•Locating and Grounding Cisco ONS 15310-CL ANSI Chassis
•Locating and Grounding Cisco ONS 15600 ANSI and ONS 15600 ETSI Bay Assembly
Warning This equipment is intended to be grounded. Ensure that the host is connected to earth ground during normal use. Statement 39.
Warning Use copper conductors only. Statement 1025.
Warning When installing or replacing the unit, the ground connection must always be made first and disconnected last. Statement 1046.
Note A 1-inch-wide copper braid is mandatory to install the Cisco ONS 15454 ANSI, ONS 15454 ETSI, ONS 15310-MA ANSI, ONS 15310-MA ETSI, ONS 15310-CL ANSI, and ONS 15600 ANSI and ONS 15600 ETSI chassis.
Locating and Grounding Cisco ONS 15454 ANSI Chassis
Follow these steps to locate the ground point and attach a ground cable to the Cisco ONS 15454 ANSI chassis.
Step 1 Verify that the office ground cable is connected to the top of the bay and the office ground, according to local site practice. (Figure 1 and Figure 2)
Note Additional ground cables may be added depending on local site practice. The ONS 15454 chassis is designated for a Common Bonding Network (CBN) only, according to definitions of GR-1089-CORE Issue 4 (sec 9.3).
Note The DC power Battery Return (BR) or positive terminal, must be grounded at the source end( (power feed or DC mains power end). The DC-power BR input terminal is not connected to the equipment frame (chassis), so it is configured as DC-I according to GR-1089-CORE, Issue 4 (sec 9.8.3).
Step 2 Remove any paint and other nonconductive coatings from the surfaces between the chassis ground and bay frame ground point. Clean the mating surfaces and apply appropriate antioxidant compound to the bare conductors.
Step 3 Attach one end of the shelf ground cable (#6 AWG) to the ground point on the chassis, using the specified dual-hole lug connector. (Diagrams 1 and 2 in Figure 5)
Step 4 Attach the other end of the shelf ground cable to the bay frame using a dual-hole lug connector according to equipment bay frame specifications. (Diagram 3 in Figure 5)
Figure 5 Grounding ONS 15454 ANSI Chassis
Stop. You have completed grounding the chassis.
Locating and Grounding Cisco ONS 15454 ETSI Chassis
Follow these steps to locate the ground point and attach a ground cable to the Cisco ONS 15454 ETSI chassis.
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
Step 1 Verify that the office ground cable is connected to the top of the bay and the office ground, according to local site practice. (Figure 1 and Figure 2)
Step 2 Insert the stripped end of the grounding wire into the open end of the grounding lug.
Step 3 Use the crimping tool to secure the grounding wire in two different places in the grounding lug.
Step 4 Locate the grounding receptacle on the side panel of the chassis. (Diagram 1 in Figure 6)
Step 5 Place the grounding lug against the grounding receptacle on the side panel of the chassis. (Diagram 2 in Figure 6)
Step 6 Insert one of the screws through the locking washer and through the hole in the grounding lug. Insert the screw into the threaded holes on the right side of the shelf. Ensure that the grounding lug does not interfere with other system hardware or rack equipment.
Step 7 Repeat Step 6 with the second screw.
Step 8 Prepare the other end of the grounding wire and connect it to an appropriate grounding point in your site to ensure adequate earth ground for the chassis. (Diagram 3 in Figure 6)
Figure 6 Grounding ONS 15454 ETSI Chassis
Stop. You have completed grounding the chassis.
Locating and Grounding Cisco ONS 15310-MA ANSI and ONS 15310-MA ETSI Chassis
Follow these steps to locate the ground point and attach a ground cable to the Cisco ONS15310-MA ANSI and ONS 15310-MA ETSI chassis.
Step 1 Verify that the office ground cable (#6 AWG stranded) is connected to the top of the rack according to local site practice. (Figure 1 and Figure 2)
Note A 1-inch (minimum) wide copper braid is required for ONS15310-MA OSP installations.
Step 2 Remove any paint and other nonconductive coatings from the surfaces between the chassis ground and the rack frame ground posts. Clean the mating surfaces and apply an appropriate antioxidant compound to the bare conductors.
Note Additional ground cables may be added depending on local site practice. The ONS 15310-MA chassis is designated for a Common Bonding Network (CBN) only, as described in GR-1089-CORE, Issue 4 (sec. 9.3).
Note The DC power Battery Return (BR) or positive terminal, must be grounded at the source end (power feed or DC mains power end). The DC power BR input terminal of the ONS 15310-MA ETSI is not connected to the equipment frame (chassis), so it is configured as DC-I according to the GR-1089-CORE, Issue 4 (sec 9.8.3).
Step 3 Locate the ground connection points, which are located on the left, right, and bottom of the ONS 15310-MA chassis. (Diagram 1 in Figure 7)
Step 4 Using a wire stripper, strip 0.875 in. (2.22 cm) from the end of the #6 AWG ground cable. Crimp the two-hole lug to the #6 AWG ground cable.
Step 5 Line up the holes on the lug with the holes on the ground connection point. Use two 10-32 screws to attach the lug to the ground connection point. (Diagram 2 in Figure 7)
Step 6 Attach the other end of the chassis ground cable to the rack. (Diagram 3 in Figure 7)
Figure 7 Grounding ONS 15310-MA ANSI and ONS 15310-MA ETSI Chassis
Stop. You have completed grounding the chassis.
Locating and Grounding Cisco ONS 15310-CL ANSI Chassis
Follow these steps to locate the ground points and attach a ground cable to the Cisco ONS 15310-CL ANSI chassis.
Step 1 Verify that the office ground cable (#6 AWG stranded) is connected to the top of the rack according to local site practice. (Figure 1 and Figure 2)
Step 2 Remove any paint and other nonconductive coatings from the surfaces between the shelf ground and the rack frame ground posts. Clean the mating surfaces and apply an appropriate antioxidant compound to the bare conductors.
Note Additional ground cables may be added depending on the local site practice. The ONS 15310-CL chassis is designated for a Common Bonding Network (CBN) only, as described in GR-1089-CORE , Issue 4 (sec. 9.3).
Note The DC power Battery Return (BR) or positive terminal, must be grounded at the source end (power feed or DC mains power end). The DC power BR input terminal of the ONS 15310-CL is not connected to the equipment frame (chassis). However, the ONS 15310-CL is configured as DC-I in compliance with GR-1089-CORE, Issue 4 (sec.9.8.3).
Step 3 Using the 10-32 screws that came with the ship kit, attach one end of the chassis ground cable (#6 AWG) to the ground connection point located on the center of the rear panel as you face the chassis.Using a wire stripper, strip 0.875 inches (2.22 cm) from the end of the #6 AWG ground cable.
Step 4 Crimp the two-hole lug to the #6 AWG ground cable.
Step 5 Line up the holes on the lug with the holes on the ground connection point, located at the center of the rear panel as you face the chassis. Use two 10-32 screws to attach the lug to the ground connection point. (Diagrams 1 and 2 in Figure 8)
Step 6 Attach the other end of the chassis ground cable to the rack. (Diagram 3 in Figure 8)
Figure 8 Grounding ONS 15310-CL ANSI Chassis
Stop. You have completed grounding the chassis.
Locating and Grounding Cisco ONS 15600 ANSI and ONS 15600 ETSI Bay Assembly
Follow these steps to locate the ground point and attach a ground cable to the office ground from the Cisco ONS 15600 ANSI and ONS 15600 ETSI chassis bay assembly.
Note The Cisco ONS 15600 ANSI andONS 15600 ETSI chassis ground points are already connected to the grounding points on the bay assembly.
Warning Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 213
Note Remove any paint from the two-hole lug position on the bay front ground holes and apply the antioxidant compound to this position.
Step 1 Locate the ground access points on the bay assembly of the chassis. (Diagram 1 in Figure 9)
Step 2 Connect the office ground cable to the bay front two-hole lug position. (Diagram 2 in Figure 9)
Figure 9 Grounding ONS 15600 Bay Assembly
Stop. You have completed grounding the bay assembly.
Installing the Line Cards
This section describes how to properly install the line cards. The following topics are included in this section:
•Preparing the Work Surface for Installing Line Cards
•Transporting Line Cards
•Handling Line Cards
•Removing and Installing Line Cards
Preparing the Work Surface for Installing Line Cards
This section illustrates how you and the work surface that you are placing the line card on must be properly grounded. As shown in Figure 10, ensure that you follow these steps:
•Ground yourself by wearing an ESD wrist band that is connected to the earth ground.
•Ground the table to the earth ground.
•Ground the chassis to the earth ground.
•Ground the rack to the earth ground.
Figure 10 Work Surface for Installing the Line Cards
Transporting Line Cards
This section illustrates how the line card must be kept in a sealed antistatic bag while being transported. (Figure 11)
Figure 11 Transporting Line Cards
Handling Line Cards
This section illustrates how you must be properly grounded before removing the line card from the antistatic bag. It also illustrates how you must handle the line card by the front panel and the metal carrier only. (Figure 12)
Figure 12 Handling Line Cards
Removing and Installing Line Cards
This section illustrates the precautions to be taken while removing and installing the line cards. (Figure 13)
Figure 13 Removing and Installing Line Cards
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