ZyXEL Communications OMC-2301, Руководство пользователя

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Chapter 2 Hardware
OMC-2301 User’s Guide
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Figure 5 Alarm Connector Pin Layout
The ALM port has input pins and output pins.
Connect the alarm input pins to another piece of equipment so it can notify the OMC-2301 of
an alarm. Connect the alarm output pins to another piece of equipment so the OMC-2301 can
notify it of an alarm.
The OMC-2301 signals an alarm when it detects an alarm on the
ALM input pins or in the
OMC system (for example, the voltage or temperature is outside the normal range). To signal
an alarm, the OMC opens the circuit for pins 1 and 6 (the common pin) and closes the circuit
for pins 2 and 6.
A closed circuit on a pair of alarm input pins indicates an alarm. Pins 3 and 7 are alarm input I.
Pins 4 and 8 are alarm input II. Pins 5 and 9 are alarm input III.
The following table describes the alarm pins.
2.3.3 Power Connector
Make sure you are using the correct power source as shown on the panel.
Table 3 Alarm Connector Pin Assignments
PIN DESCRIPTION
1 Alarm output, normally closed
2 Alarm output, normally open
3 Alarm input I, normally open
4 Alarm input II, normally open
5 Alarm input III, normally open
6 Alarm output, common pin
7 Alarm input I, normally open
8 Alarm input II, normally open
9 Alarm input III, normally open