User's Manual

Chapter 3 - Operation and Administration Using the CLI NPU Configuration

4Motion 399 System Manual

3.3.15.4.1 Mapping a Dry-contact Input Alarm to an Alarm Condition

Dry contact alarms are connected to the 4Motion unit via the 25-pin micro D-Type

ALRM-IN/OUT connector on the front panel of the NPU. You can configure upto

eight dry contact input alarms, each connected to a different pin on the

ALRM-IN/OUT connector. Each alarm can then map to any of the following alarm

conditions. If the external dry-contact alarm detects that any of these conditions

is fulfilled, an alarm is raised, and a corresponding trap is sent to the EMS.

 Commercial power failure

 Fire

 Enclosure door open

 High temperature

 Flood

 Low fuel

 Low battery threshold

 Generator failure

 Intrusion detection

 External equipment failure

To map the a dry contact alarm to an alarm condition, run the following

command:

npu(config)# dry-contact IN <alarm_num (1-8)> alarm

{CommercialPowerFailure | Fire | EnclosueDoorOpen | HighTemperature

IntrusionDetection | ExternalEquipmentFailure} [alarmPolarity

{RaiseOnClose | RaiseOnOpen }]

IMPORTANT

Dry-contact input alarms are a means to raise a trap to the EMS when a change in conditions is

notified by the external device. However, the trap may not reach the EMS because of trap rate limiting,

network congestion or for reasons relating to the external equipment. Alvarion does not assume

responsiblity for traps that are lost.