Schneider Electric PM850, PM870, PM820, PM810 manual Basic Alarms, Basic Alarm Groups

63230-500-225A2	PowerLogicTM Series 800 Power Meter
3/2011	Chapter 6—Alarms

Chapter 6—Alarms

This section describes the alarm features on all Series 800 Power Meters. For information about advanced alarm features, go to “Advanced Alarms” on page 53.

Basic Alarms

The power meter can detect over 50 alarm conditions, including over or under conditions, digital input changes, phase unbalance conditions, and more. It also maintains a counter for each alarm to keep track of the total number of occurrences. A complete list of default basic alarm configurations are described in Table 6–5 on page 51 . In addition, you can set up your own custom alarms after installing an input/output module (PM8M22, PM8M26, or PM8M2222).

When one or more alarm conditions are true, the power meter will execute a task automatically. When an alarm is active, the ! alarm icon appears in the upper-right corner of the power meter display. If a PM810LOG is installed on a PM810, PowerLogic software can be used to set up each alarm condition to force data log entries in a single data log file. For the PM820, PM850, and PM870 PowerLogic software can be used to set up each alarm condition to force data log entries in up to three user-defined data log files. See Chapter 7—Loggingon page 57 for more about data logging.

NOTE: PM820 only supports one data log.

Table 6–1: Basic alarm features by model

Basic Alarm Feature	PM810	PM810 with	PM820	PM850	PM870
		PM810LOG
Standard alarms	33	33	33	33	33
Open slots for additional	7 ➀	7 ➀	7	7	7
standard alarms
Digital	12 ➁	12 ➁	12 ➁	12 ➁	12 ➁
Custom alarms	No	No	Yes	Yes	Yes

➀Available when an I/O module with analog IN/OUT is installed.

➁Requires an input/output option module (PM8M22, PM8M26, or the PM8M2222).

Basic Alarm Groups

When using a default alarm, you first choose the alarm group that is appropriate for the application. Each alarm condition is assigned to one of these alarm groups:

Whether you are using a default alarm or creating a custom alarm, you first choose the alarm group that is appropriate for the application. Each alarm condition is assigned to one of these alarm groups:

•Standard—Standard alarms have a detection rate of 1 second and are useful for detecting conditions such as over current and under voltage. Up to 40 alarms can be set up in this alarm group.

•Digital—Digital alarms are triggered by an exception such as the transition of a digital input or the end of an incremental energy interval. Up to 12 alarms can be set up in this group.

•Custom—The power meter has many pre-defined alarms, but you can also set up your own custom alarms using PowerLogic software. For example, you may need to alarm on the ON-to-OFF transition of a digital input. To create this type of custom alarm:

1.Select the appropriate alarm group (digital in this case).

2.Select the type of alarm (described in Table 6–6 on page 52 ).

3.Give the alarm a name.

4.Save the custom alarm.

After creating a custom alarm, you can configure it by applying priorities, setting pickups and dropouts (if applicable), and so forth.

Both the power meter display and PowerLogic software can be used to set up standard, digital, and custom alarm types.

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