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
*Note: Bus alarm is only triggered after a ring connection is established.
FIGURE 5: ALARM OUTPUTS
FIGURE 6: CONTACT CLOSURE OUTPUT
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