OSD NETWORKS OSD2254EP - Alarm Output Connections and Conditions

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OSD2254EP Operator Manual
2.2.5 ALARM CONNECTION
The OSD2254EP has two monitoring alarm outputs: 1) Ring to Bus Alarm and 2)
Temperature Alarm. The alarm connections and conditions for alarm outputs are as set out in
Table 3. There are four pins on the 3.5mm terminal block used alarm output. Maximum
ratings the OSD2254EP relay can drive is 100mA @ 46V
(max)
. Note: Alarm output has no
polarity.
TABLE 3: ALARM CONNECTIONS
Alarm
Output
Alarm 1
Ring /Bus Status
Alarm 2
Temperature
Open
Ring
Less than 80C
Closed
Bus*
Higher than 80C
*Note: Bus alarm is only triggered after a ring connection is established.
FIGURE 5: ALARM OUTPUTS
FIGURE 6: CONTACT CLOSURE OUTPUT
Alm1
Alm2
OSD2254EP