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Chapter 6—Alarms

April 2001

 

About Alarms

 

 

Setpoint-Driven Alarms

Many of the alarm conditions require that you define setpoints. This includes

 

all alarms for over, under, and phase unbalance alarm conditions. Other

 

alarm conditions such as digital input transitions and phase reversals do not

 

require setpoints. For those alarm conditions that require setpoints, you must

 

define the following information:

 

Pickup Setpoint

 

• Pickup Delay (depending on the alarm group, you choose the time in

 

 

seconds, 100 ms increments, or cycles)

 

Dropout Setpoint

• Dropout Delay (depending on the alarm group, you choose the time in seconds, 100 ms increments, or cycles)

NOTE: Alarms with both Pickup and Dropout setpoints set to zero are invalid.

To understand how the circuit monitor handles setpoint-driven alarms, see Figure 6–2 on page 86. Figure 6–1shows what the actual alarm Log entries for Figure 6–2might look like, as displayed by SMS.

NOTE: The software does not actually display the codes in parentheses—

EV1, EV2, Max1, Max2. These are references to the codes in Figure 6–2.

© 2001 Schneider Electric All Rights Reserved

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Schneider Electric 4000 manual Setpoint-Driven Alarms, Define the following information, Pickup Setpoint, Dropout Setpoint