Brocade Communications Systems 53-1002580-01 manual Connecting to the Alarm Port

2 Connecting to the Alarm Port

Connecting to the Alarm Port

The DB-15 alarm port on the switch’s front panel is used to provide alarm. The switch supports two sets of alarm relay contacts (major and minor), and 4 external customer site alarm inputs. The pin assignments used to connect to the alarm port are provided in the following table.

FIGURE 19 ALARM PORT (D-15) PIN OUT

1

15

Wiring Map for Alarm Cable

The signals include relay contacts for major and minor system alarms, and external alarm inputs.

TABLE 4		SYSTEM STATUS LEDs
Switch’s Alarm Port			Funtion
1	(MJR_ALARM_CNTR)		Common contact for major alarm relay.
2	(MNR_ALARM_CNTR)		Common contact for minor alarm relay.
3	(ALARM_IN3_EXT_P*)		External alarm input 3 (external relay dry contact closure to pin 13).
4	(ALARM_IN4_EXT_P)		External alarm input 4 (external relay dry contact closure to pin 8).
5	(No Contact)
6	(MJR_ALARM_NO)		Normally open during major alarm state.
7	(MNR_ALARM_NO)		Normally open during minor alarm state.
8	(ALARM_IN4_EXT_RTN†)		External alarm input 4 (external relay dry contact closure from pin 3).
9	(ALARM_IN1_EXT_P)		External alarm input 1 (external relay dry contact closure to pin14).
10 (ALARM_IN2_EXT_P)			External alarm input 2 (external relay dry contact closure to pin 15).
11 (MJR_ALARM_NC)			Normally closed during major alarm state.
12 (MNR_ALARM_NC)			Normally closed during minor alarm state.
13 (ALARM_IN3_EXT_RTN)			External alarm input 3 (external relay dry contact closure from pin 3).
14 (ALARM_IN1_EXT_RTN)			External alarm input 1 (external relay dry contact closure from pin 9).
15 (ALARM_IN2_EXT_RTN)			External alarm input 2 (external relay dry contact closure from pin 10).

* P indicates positive input.

† RTN indicates return to Ground.

20	Brocade 6910 Ethernet Access Switch Hardware Installation Guide
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