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All modules in the chassis supply their alarm status to the alarm relay contacts on the CIM. You
can connect an external device to the terminal to provide alarm information to a person or an
environment away from the chassis.
6. Connect devices to collect alarm information for Major and Minor alarms. The alarm
contacts are located on the front panel; see Figure 2. The relay alarm contacts provide both
normally open and normally closed contacts for each port:
•
NO The contacts are open for normal operation and closed in a fault condition
•
COM The electrical common
•
NC The contacts are closed for normal operation and open in a fault condition
2.3
Front Panel Controls
The front panel of the CIM includes four LEDs that show current status, contacts for alarm
outputs, and an Alarm Acknowledgment pushbutton.
2.3.1 LEDs
Figure 2 shows the four LEDs on the front panel; Table 1 describes them.
Table 1. Front Panel LEDs
LED
State
CLK (Clock)
Green
Off
STA (Status)
Green
Amber
Red
MAJ (Major)
OFF
Red
MIN (Minor)
OFF
Amber
Note:
When an alarm occurs in a multiple chassis configuration, only the chassis that generates
the alarm shows the amber STA LED.
2-2
EdgeAccess Universal Chassis System
This CIM is providing the active clock source for the management bus
This CIM is not the clock source
Normal operation
This alarm relay is latched with a major and/or minor alarm
Fault in the CIM
No major alarms
A major alarm in the CIM or the chassis
No minor alarms
A minor alarm in the CIM or the chassis
Model 1202 CIM User Manual
Definition
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