The table below provides an overview of the operating ambient temperature limits for different interface
modules with A900-RSP3C-200-S in the router.
The temperature range could be further restricted by the optical modules used in the router.
Note
Table 10: Operating Temperature for A900-RSP3C-200-S Module
Operating Temperature Limit (°C)
Fan Tray
Interface Modules
–
40 to 65
A902-FAN-E
A900-IMA1X
A900-IMA8T
A900-IMA8S
A900-IMA2Z
A900-IMA8T1Z
A900-IMA8S1
–
40 to 50
A900-IMA8Z
–
40 to 45
A900-IMA2F
Temperature Sensor
The Cisco ASR 902 Router has a temperature sensor to detect overtemperature conditions inside the chassis.
The overtemperature detection trips at 75°C +/
–
5% with the ambient (inlet) trip point at 67°C. This condition
is reported to the processor as an interrupt, and the software takes action to generate the appropriate alarms.
Temperature Sensors on the A900 RSP3 modules
The maximum operating temperature of the RSP3 module and the interface modules is less than the maximum
operating temperature of the router. The IOS software decides the appropriate temperature thresholds to
generate warnings, and shuts down the system when abnormally high temperature is detected.
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
35
Overview
Temperature Sensor
