SNMP Traps

The Sentry supports three types of SNMP traps. Traps are enabled at the tower (T), infeed (I) or outlet

(O) level.

Trap Summary

Name

Level(s)

Description

Status

T, I, O

Operational status change

 

 

 

Change

O

Control status change

 

 

 

Load

I

Input load out of limit

All traps include the Location of the Sentry as defined with the Set Location command.

Status trap

A Status trap is generated when an error condition occurs on a tower, infeeed, Environmental Monitor or individual sensor. Status traps include the reported Status, the Location of the Sentry and identifier and name of the affected tower, infeed, outlet, environmental monitor or sensor.

Any error state generates a Status trap and triggers the trap timer. A new trap is generated at the end of every timer period until the Status returns to a non-error status. All status traps are enabled by default.

Tower Status traps

Status

Error

Description

Normal

 

Tower is working correctly

 

 

 

NoComm

x

Communication to the tower has been lost

Infeed Status traps

Status

Error

Description

On

 

Infeed is on

 

 

 

OffError

x

Infeed should be on but no current is sensed at the infeed

 

 

 

NoComm

x

Communication to the infeed has been lost

Outlet Status traps

Status

Error

Description

 

 

 

On

 

Outlet is on

 

 

 

Off

 

Outlet is off

 

 

 

OnWait

 

Outlet Status in transition

 

 

 

OffWait

 

Outlet Status in transition

 

 

 

OnError

x

Outlet should be off but current is sensed at the outlet

 

 

 

OffError

x

Outlet should be on but no current is sensed at the outlet

 

 

 

OffFuse

x

Outlet should be on but a blown fuse has been detected

 

 

 

NoComm

x

Communication to the outlet has been lost

NOTE: Traps are generated according to a hierarchical architecture; i.e. if a Tower Status enters a trap condition, only the Tower Status trap is generated. Infeed and Outlet Status traps are suppressed until the Tower Status returns to Normal.

Change trap

The Change trap is generated for all outlet status changes between any on/off conditions. Change traps include the outlet status, Location of the Sentry, and identifier and name of the affected outlet. For descriptions of the outlet status types, please refer to the prior table.

50 • Advanced Operations

Sentry PT22

 

Installation and Operations Manual