Appendix C: Alarm Pin Assignments
7210 SAS-T Installation Guide Page 89
Table 6: Alarm Interface Port Pinouts
Pin Name Function
1 CRIT_ALARM_COM Common contact for Critical alarm relay.
2 CRIT_ALARM_NO Normally open contact will be connected to
the common contact during a Critical alarm
state.
3 MJR_ALARM_NC Normally closed contact will be disconnected
from the common contact during a Major
alarm state.
4 +24 VDC source 100 mA
referenced to chassis
ground
Available as a source voltage for use with
Alarm In 1-4.
5 ALARM_IN4_EXT_+ External alarm input 4 (external relay dry
contact closure to pin 12).
6 ALARM_IN3_EXT_+ External alarm input 3 (external relay dry
contact closure to pin 13).
7 ALARM_IN2_EXT_+ External alarm input 2 (external relay dry
contact closure to pin 14).
8 ALARM_IN1_EXT_+ External alarm input 1 (external relay dry
contact closure to pin 15).
9 CRIT_ALARM_NC Normally closed contact will be disconnected
from the common contact during a Critical
alarm state.
10 MJR_ALARM_COM Common contact for Major alarm relay.
11 MJR_ALARM_NO Normally open contact will be connected to
the common contact during a Major alarm
state.
12 ALARM_IN4_EXT_RTN External alarm input 4 (external relay dry
contact closure from pin 5).
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