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Octel 350 Service Affecting Alarm Contact 1
- Thread starter jchriscoe
- Start date
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1
- #2
Sorry it does not copy well to text i will try to get the table to copy better
Remote Alarm Relays
The main distribution board provides dry-contact relays that allow customer-supplied external
audible and visual alarms to be connected to the server. These external alarms are connected
through J25 on the distribution board, with a hooded, 25-pair amphenol connector provided by
the customer. (Figure 2-15 shows the J25 connector on the main distribution board.)
Each relay consists of three contacts: a normally open (NO), a normally closed (NC), and a
common (COM) contact. For each alarm category, connect a remote audible or visual alarm to the
NO contact. The J25 pins used for each alarm category are listed in Table 2-13.
Component Descriptions 2-39
101–1612–000 Aria 1.2 and 2.0
Table 2-13. J25 Pins Used for
Remote Alarms.
J25 Pins
Alarm
NO NC COM
NSA 21 20 45
SA 23 22 47
OOS 25 24 49
Voltage ratings for remote-alarm relays, which comply with UL and CSA standards, are 0.5
amperes at 60 Vdc or 42.4 Vac maximum.
Each relay consists of three connections: a normally open (NO), a normally closed (NC), and a
common (COM) connection. The no-active-alarm condition has the NC contact closed and the
NO contact open, as shown in Figure 2-16. The active-alarm condition has the NO contact closed
and the NC contact open.
??
??
??
??
?? ??
Figure 2-16. Remote-Alarm Relay Circuit.
Ken Means
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)
Remote Alarm Relays
The main distribution board provides dry-contact relays that allow customer-supplied external
audible and visual alarms to be connected to the server. These external alarms are connected
through J25 on the distribution board, with a hooded, 25-pair amphenol connector provided by
the customer. (Figure 2-15 shows the J25 connector on the main distribution board.)
Each relay consists of three contacts: a normally open (NO), a normally closed (NC), and a
common (COM) contact. For each alarm category, connect a remote audible or visual alarm to the
NO contact. The J25 pins used for each alarm category are listed in Table 2-13.
Component Descriptions 2-39
101–1612–000 Aria 1.2 and 2.0
Table 2-13. J25 Pins Used for
Remote Alarms.
J25 Pins
Alarm
NO NC COM
NSA 21 20 45
SA 23 22 47
OOS 25 24 49
Voltage ratings for remote-alarm relays, which comply with UL and CSA standards, are 0.5
amperes at 60 Vdc or 42.4 Vac maximum.
Each relay consists of three connections: a normally open (NO), a normally closed (NC), and a
common (COM) connection. The no-active-alarm condition has the NC contact closed and the
NO contact open, as shown in Figure 2-16. The active-alarm condition has the NO contact closed
and the NC contact open.
??
??
??
??
?? ??
Figure 2-16. Remote-Alarm Relay Circuit.
Ken Means
"I find that the harder I work, the more luck I seem to have."
- Thomas Jefferson (1743-1826)
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