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D1M 20 POWER METER USER MANUAL
7.4.Alarms (ALAM)
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:
Alarm Digital Output
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 D1M 20 provides up to 15 alarms; following parameters are available:
Menu
Menu
NUM
VARIABLE
PHASE
TYPE
SETPOINT
DELAY
HYSTERESIS
LOG
PORT
Threshold
Variable
Hysteresis
MIN
Event
Delay
will be displayed.
Description
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
Delay
Event
MAX
Hysteresis
Event
Threshold
Event
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