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Cisco 1120 Connected Grid Router Hardware Installation Guide
OL-26438-02
Chapter 3 Router Hardware Description
Hardware Features
Alarm Port
See
Figure 3-5
for the alarm port location.
Attach the alarm port to an alarm system to monitor and trigger external alarm events. The router
supports two alarm inputs and two alarm outputs.
The alarm-trigger setting determines when an alarm is sent to the attached alarm system.
The alarm port has a rating of 30V DC, 1A.
Input Alarm Trigger Settings
•
Open
—The
open
setting indicates that the normal router operating condition has an electrical
current passing through the alarm circuits (DRY contact closed). If this electrical current is no
longer detected (DRY contact open), an alarm is generated.
•
Closed
—The
closed
setting indicates that the normal router operating condition is that no electrical
current is passing through the alarm circuits (DRY contact open). If an electrical current is detected
(DRY contact closed), an alarm is generated.
Output Alarm Trigger Settings
•
Normally Open (NO)
—This setting depends on the pinout of the cable that is connected to the
alarm port. See the appendix
Connector and Cable Specifications
for details.
•
Normally Closed (NC)
—This setting depends on the pinout of the cable that is connected to the
alarm port. See the appendix
Connector and Cable Specifications
for details.
If interfaces fail or other non-fatal errors occur, the alarm port does not respond. Continue to use SNMP
to manage these types of errors.
Note
Due to the RJ-45 pin spacing, the alarm port does not support AC signaling.
Circuit Breaker
AC
•
Single Phase: Single 10A circuit breaker
•
Three-phase: Three 10A ganged circuit breaker
•
AC voltage rating: 250VAC L-N (minimum)
Note
We recommend that the circuit breaker be installed in close
proximity to the router by a licensed electrician in accordance
with local electrical standards.
DC
•
DC rating: 60VDC minimum, 10A maximum
Output Power
40W
Cooling Type
Natural convection
Operating Temperature
-40 F to 140 C (-40 C to 60 C)
Lifetime
20 years, at 104 F (40 C)
