Basler Electric DECS-400 - Manual (Page 36)

24 9369700990 Rev R
Alarms Message
The alarms message line remains blank during normal operating conditions. If an enunciable condition
occurs, “ALARMS (PRESS < OR >)” is displayed. Information about the condition is obtained by viewing
the alarm message screen.
Alarm Message Screen
Pressing either the left or right scrolling pushbuttons, while viewing the metering screen, displays the
alarm message screen. This screen displays up to six messages identifying the conditions that led to the
most recent annunciations.
lists the annunciations that may appear on the alarm message screen. When more than one message is
listed, the newest messages are added to the bottom of the list. Once the list contains six messages, any
further annunciations will cause the oldest message to be deleted from the top of the list.
Table 5. Alarm Messages
Annunciation Message Duration of Message
CLOCK RESET Maintained until reset
CURRENT UNBALANCE Automatically reset
EXCESSIVE V/HZ Maintained until reset
EXCITER DIODE OPEN Maintained until reset
EXCITER DIODE SHORT Maintained until reset
FAILED TO BUILD UP Maintained until reset
FIELD OVER TEMP Maintained until reset
FIELD OVERCURRENT Maintained until reset
FIELD OVERVOLTAGE Maintained until reset
GEN. OVERVOLTAGE Maintained until reset
GEN. UNDERVOLTAGE Maintained until reset
LOSS ISOLATION MODULE Automatically reset
LOSS OF FIELD Maintained until reset
LOSS OF IRIG Automatically reset
LOST VOLTAGE SENSING Maintained until reset
OVEREXCITATION LIMIT Clears 2 s after end of event
POWER BELOW THRESHOLD Automatically reset
POWER SUPPLY LOW Automatically reset
PSS BLOCK Automatically reset
SPEED FAILURE Automatically reset
STATOR CURRENT LIMIT Clears 2 s after end of event
SYSTEM BELOW 10 HZ Clears 2 s after end of event
UNDEREXCITATION LIMIT Clears 2 s after end of event
UNDERFREQUENCY Clears 2 s after end of event
VAR LIMIT Automatically reset
VOLTAGE LIMIT Automatically reset
VOLTAGE UNBALANCE Automatically reset
The list of alarm messages can be cleared by pressing the Reset pushbutton. Pressing the Reset
pushbutton also sends the display back to the metering screen and clears the metering screen alarms
Human-Machine Interface DECS-400