Alarms (Alm) - ABB M1M 30 Series User Manual

36 M1M 30 POWER METER USER MANUAL

7.5.Alarms (ALM)

ALARM configuration is used to get info on threshold violations of specific parameters. When the
measurement quantity exceeds the limit, an alarm will be given to prompt users to make corresponding
treatment measures in time.
Each alarm can only be triggered when certain conditions are met. The following graph describes the
process of triggering and releasing an alarm:
When the value of the alarm variable exceeds the threshold and the delay, the alarm will be generated;
and when the alarm variable recovers to the normal range and exceeds the hysteresis and delay, the alarm
will be released. Alarm can be connected to certain DO to control the alarm signal output at the DO. If the
alarm is stored in flash, it can be viewed later in the read data menu. When the device is in alarm state,
ICON
Each M1M provides up to 15 alarms; following parameters are available:
Menu
NUM
VARIABLE
PHASE
TYPE
SETPOINT
DELAY
HYSTERESIS
LOG
PORT
Variable
Event
Alarm Digital Output
will be displayed. If this alarm is selected to be stored in Flash, ICON
Description
Select which alarm will be edited, max 15 alarms can be selected
Select alarm variable
Select the phase of alarm variable
Type of alarm: cross-up (MAX) or cross-down (MIN)
Set threshold
Delay time
Set hysteresis
Storing the alarm
Select digital output port for alarm
Event
Threshold
Hysteresis
Event
Threshold
MIN
Delay
Delay
MAX
Event
Hysteresis
will also be displayed