Table Of Contents
Connecting Cisco ONS 15454 AIC-I Alarm Cables
This document contains information about connecting the cables for the external alarm contacts provided by the AIC-I card. Use this document in conjunction with the Cisco ONS 15454 Procedure Guide and the Cisco ONS 15454 Reference Guide.
This document contains the following sections:
Alarm Interface Controller-International Card
The optional Alarm Interface Controller-International (AIC-I) card provides customer-defined alarm input/output (I/O) and supports user data and local and express orderwire. It provides 12 customer defined input and 4 customer defined input/output contacts. The physical connections are via the backplane wire-wrap pin terminals. A power monitoring function monitors the supply voltage (-48VDC) for the ANSI platform.
The AIC-I card provides input/output alarm contact closures. You can define up to twelve external alarm inputs and four external alarm inputs/outputs (user configurable). The physical connections are made using the backplane wire-wrap pins. The alarms are defined using CTC and TL1. For instructions, refer to the Cisco ONS 15454 Procedure Guide.
LEDs on the front panel of the AIC-I indicate the status of the alarm lines, one LED representing all the inputs and one LED representing all the outputs. External alarms (input contacts) are typically used for external sensors such as open doors, temperature sensors, flood sensors, and other environmental conditions. External controls (output contacts) are typically used to drive visual or audible devices such as bells and lights, but they can control other devices such as generators, heaters, and fans.
You can program each of the twelve input alarm contacts separately. Choices include Alarm on Closure or Alarm on Open, an alarm severity of any level (Critical, Major, Minor, Not Alarmed, Not Reported), a Service Affecting or Non-Service Affecting alarm-service level, and a 63-character alarm description for CTC display in the alarm log. You cannot assign the fan-tray abbreviation for the alarm; the abbreviation reflects the generic name of the input contacts. The alarm condition remains raised until the external input stops driving the contact or you provision the alarm input.
The output contacts can be provisioned to close on a trigger or to close manually. The trigger can be a local alarm severity threshold, a remote alarm severity, or a virtual wire:
•Local NE alarm severity: A hierarchy of non-reported, non-alarmed, minor, major or critical alarm severities that you set to cause output closure. For example, if the trigger is set to minor, a minor alarm or above is the trigger.
•Remote NE alarm severity: Same as the Local NE alarm severity but applies to remote alarms only.
•Virtual wire entities: You can provision any environmental alarm input to raise a signal on any virtual wire on external outputs 1 through 4 when the alarm input is an event. You can provision a signal on any virtual wire as a trigger for an external control output.
You can also program the output alarm contacts (external controls) separately. In addition to provisionable triggers, you can manually force each external output contact to open or close. Manual operation takes precedence over any provisioned triggers that might be present.
Note The number of inputs and outputs can be increased using the Alarm Expansion Panel AEP. If an AEP is used, the direct AIC-I alarm contacts as described in this paper cannot be used. In this case, you can only use the alarm contacts available from the AEP.
Alarm Contact Specifications
–Number of inputs: 12
–Label customer provisionable
–Severity customer provisionable
–Common 32V output for all alarm-inputs
–Each input limited to 2mA
–Termination: wire-wrap on backplane
–Number of outputs: 4 (user configurable as inputs)
–Switched by opto-MOS (metal oxide semiconductor)
–Triggered by definable alarm condition
–Maximum allowed open circuit voltage: 60 VDC
–Maximum allowed closed circuit current: 100mA
–Termination: wire-wrap on backplane
Install Alarm Wires on the Backplane
Note If you are using the AEP, do not perform this task.
Caution Always use the supplied electrostatic discharge (ESD) wristband when working with an ONS 15454. Plug the wristband cable into the ESD jack located on the lower right outside edge of the shelf assembly and ensure the shelf assembly is properly grounded.
Caution Hazardous voltage or energy may be present on the backplane when the system is operating. Use caution when servicing.
Step 1 Use #22 or #24 AWG wires.
Step 2 Wrap the alarm wires on the appropriate wire-wrap pins according to local site practice. Figure 1 shows alarm pin assignments.
Note For information about attaching ferrites to wire-wrap pin fields, see the Cisco ONS 15454 Procedure Guide.
Note The AIC-I requires a shelf assembly running Software Release 3.4.0 or later. The backplane of the ANSI shelf contains a wire-wrap field with pin assignment according to the layout in Figure 1. The shelf assembly may be an existing shelf that has been upgraded to 3.4. In this case the backplane pin labeling will appear as indicated in Figure 2. But you must use the pin assignments provided by the AIC-I as shown in Figure 1.
Figure 1 Wire-Wrap Pin Layout in an R3.4 and Higher ANSI shelf assembly
Figure 2 Wire-Wrap Pin Layout in an ANSI Shelf Assembly Earlier than R3.4
•Cisco ONS 15454 Reference Manual
•Cisco ONS 15454 Procedure Guide
•Cisco ONS 15454 Troubleshooting Guide
Obtaining Documentation and Submitting a Service Request
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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
Copyright © 2003 Cisco Systems, Inc. All rights reserved.