Specifications

1-31
Cisco ONS 15454 Installation and Operations Guide, R3.2
January 2005
Chapter 1 Hardware Installation
Alarm, Timing, LAN, and Craft Pin Connections
Note When terminating battery and battery return connections as shown in Figure 1-23, follow a
torque specification of 10 in-lbs. When terminating a frame ground, use the kep-nut provided
with the ONS 15454 and tighten it to a torque specification of 31 in-lbs. The kep-nut provides
a frame ground connection that minimizes the possibility of loosening caused by rotation
during installation and maintenance activity. This type of prevention is inherently provided
by the terminal block for battery and battery return connections.
Step 5 Terminate the return 1 lead to the RET1 backplane terminal. Use oxidation-prevention grease to keep
connections non-corrosive.
Warning Do not secure multiple connectors with the same bolt assembly.
Step 6 Terminate the negative 1 lead to the negative BAT1 backplane power terminal. Use oxidation prevention
grease to keep connections non-corrosive.
Step 7 If you use redundant power leads, terminate the return 2 lead to the positive RET2 terminal on the ONS
15454. Terminate the negative 2 lead to the negative BAT2 terminal on the ONS 15454. Use
oxidation-preventative grease to keep connections non-corrosive.
Step 8 Route the cables out below the power terminals using the plastic cable clamp.
1.9 Alarm, Timing, LAN, and Craft Pin Connections
Caution Always use the supplied ESD wristband when working with a powered ONS 15454. Plug the
wristband cable into the ESD jack located on the lower-right outside edge of the shelf assembly.
The ONS 15454 has a backplane pin field located at the bottom of the backplane. The backplane pin field
provides 0.045 square inch wire-wrap pins for enabling external alarms, timing input and output, and
craft interface terminals. This section describes the backplane pin field and the pin assignments for the
field. Figure 1-24 shows the wire-wrap pins on the backplane pin field. Beneath each wire-wrap pin is a
frame ground pin. Frame ground pins are labeled FG1, FG2, FG3, etc. Install the ground shield of the
cables connected to the backplane to the ground pin that corresponds to the pin field used. Figure 1-24
shows pinouts for the ONS 15454.