Rockwell Automation Publication 1783-UM010C-EN-P - June 2019 19
About the Security Appliance Chapter 1
Alarm Ports
The Stratix 5950 security appliance has alarm ports as shown in Figure 1 on
page 13. There are two conditions that can generate an alarm:
• When dual power supply is configured, and there is a failed or missing
power supply.
• When the CPU temperature is in critical condition below -40 °C or
above 105 °C (below -40 °F or above 221 °F)
When either condition is met, the alarm status indicator turns red, and a syslog
message and SNMP trap is triggered.
The Stratix 5950 security appliance has alarm relay contacts that can be used
for an external alert system. The alarm condition of a missing/failed power
supply, when ‘power-supply dual’ is configured, triggers Alarm Relay output.
This alarm condition also sets the alarm output status indicator to solid RED
and sends out a syslog message.
Power Supply
The CLI command to configure dual power supplies is power-supply
dual. When set, the system expects to see both power supplies functioning
properly.
CLI Commands
stratix5950(config)# power-supply dual
This command informs ASA that system administration expects dual
power-supply functioning. If any of the power supplies fails, alarm
events can be triggered.
stratix5950(config)# no power-supply dual
(default)
This command informs ASA that system administration does not
expect dual power-supply (either one or two power supplies that are
functional are acceptable).
IMPORTANT When configured for dual power supply, and a failure occurs, the Alarm Out
status indicator turns red. The alarm relay is also energized. A syslog
message is generated:
Syslog: %ASA-1-735006: Power Supply Unit Redundancy Lost
When configured for dual power supply, and a failure recovers, the Alarm
Out status indicator turns off. A syslog message is generated:
Syslog: %ASA-1-735005: Power Supply Unit Redundancy OK