Alarm Contact Port On Acx500 Routers - Juniper ACX500 Hardware Manual

5 USB port
—
Figure 17 on page 57 shows the ports that are available under the interface port cover.
Figure 17: Front Panel of the ACX500 Outdoor Router with PoE—Interface Ports
GPS LED
1
—
2 Gigabit Ethernet SFP ports and LEDs
—

Alarm Contact Port on ACX500 Routers

The ACX500 router has four external alarm contacts (also known as potential free contacts) for
connecting the router to external alarm devices. The port labeled ALARM uses a 15-pin D-type
connector. The external alarm contact has 15 pins that accept a single core wire from external alarm
devices. A DE15 alarm cable is required to connect the ACX500 router to external alarm devices. Use
the gauge wire appropriate for the external device that you are connecting.
Whenever a system condition triggers an alarm, the alarm relay contacts are activated, which in turn
activates the external alarm devices. The alarm setting is open or closed.
You can connect and configure two output alarms and four input alarms. Two additional output alarms
are reserved and are used to indicate major and minor system alarms. Each output and input alarm has
two contacts for connecting the router to external alarm devices. Contact 1 of each alarm can be
configured as Normally Open [NO] or Normally Closed [NC] through the CLI. Contact 2 of each alarm
functions as a reference [REF] or negative potential terminal for Contact 1 of the corresponding alarm
Gigabit Ethernet RJ-45 ports (with PoE+
3
—
support) and LEDs
57