Power Module Switchgear (Low Voltage and Medium Voltage) Caterpillar


Alarm Screen

Usage:

PM3508 BLM
The button for the "ALARMS" screen is present at the bottom of most screens. This button enables the operator to display the screen for alarms. If the button is red, an alarm has been latched and the alarm appears on the screen for alarms. If the button is blue, there are no alarms that are latched and there are no alarms that are active in the system.


Illustration 1g00847080

Screen for Alarm List

(1) Button for "ACKNOWLEDGE"

(2) Button for "RELAY RESET"

(3) Button for "ALARM HISTORY"

(4) Button for scrolling in the Up direction

(5) Button for help

(6) Button for scrolling in the Down direction

Each alarm is listed with the following items:

  • Date

  • Event time

  • Alarm code

  • Acknowledge time

This information shows the time and the date that an event entered an alarm state. When an active alarm is acknowledged, the acknowledge time will appear. The inactive acknowledged alarms will not be displayed on the screen for alarm list.

Use the buttons for direction in order to scroll through the alarm list. A description of the alarm may be viewed by touching the button for help (5) .

Alarms are acknowledged as a group by touching the button for "ACKNOWLEDGE". All alarms are acknowledged as a group by turning the ECS to the "OFF RESET" position.

------ WARNING! ------

Personal injury or death can result from the engine starting.

The engine can start and injure persons working on or near the engine.

Be sure the engine cannot be started while service work is being performed. This is very important when the engine is equipped with an Automatic Start Stop System.

On engines equipped with an air starting system, close the air supply valve to the air starting motor before service work is begun.

----------------------

The system may activate unexpectedly if the system is in the automatic mode. Remote starting may be active and remote starting may be enabled while the alarms are acknowledged with the icon for "ACKNOWLEDGE". The system will then activate if the system is in the automatic mode. Disable remote starting before acknowledging an alarm if starting is not desired. See OMM, "Setup Screen".

Touching the "RELAY RESET" button has the same effect as touching the reset button on the front of the following relays:

  • Generator Multifunction Relays (GMR)

  • Utility Multifunction Relays (UMR)

The "RELAY RESET" button resets the active targets on these protective relays.

The screen for "ALARM HISTORY" can be accessed by touching the button for "ALARM HISTORY" (3). The screen for "ALARM HISTORY" contains a list of alarms. As many as 100 alarms may appear on the screen for "ALARM HISTORY". The newest alarm is displayed at the top of the list. The "ALARM HISTORY" may be viewed by using the buttons for direction. All alarms are logged into the "ALARM HISTORY" and all alarms remain in the "ALARM HISTORY" until 100 newer alarms occur.




Illustration 2g00847087

Screen for "ALARM HISTORY"

(7) Button for scrolling in the UP direction

(8) Button for scrolling for one page in the UP direction

(9) Button for scrolling for one page in the DOWN direction

(10) Button for scrolling in the DOWN direction

The buttons for vertical movement (8) move the cursor up one page at a time or down one page at a time.

The screen for "ALARM HISTORY" displays the time of the alarm event and the time of alarm acknowledgment.

List of Alarms for Low Voltage

Table 1
Alarms For Low Voltage    
Alarm     Description    
32-G     (32) Directional power (GMR)    
40Q-G     (40Q) Reverse VAR - loss of field (GMR)    
46-G     (46) Generator phase current balance (GMR)    
59-G     (59) Generator over voltage (GMR)    
27-G     (27) Generator under voltage (GMR)    
81\O-G     (81\O) Generator over frequency (GMR)    
81\U-G     (81\U) Generator under frequency (GMR)    
FTP     Fail to parallel    
VREG_A     Voltage regulator alarm    
VREG_S     Voltage regulator shutdown    
ENG_F     Engine fault    
MDA     Methane detector alarm    
LACL     Low after cooling level    
LJWL     Low jacket water level    
UTTR     Utility transfer trip (UTTR)    
PLCBAT     PLC battery low    
COMGMR     PLC to GMR modbus communications loss    
COMUMR     PLC to UMR modbus communications loss    
51G-U     (51G) Utility ground fault (UMR)    
59-U     (59) Utility over voltage (UMR)    
27-U     (27) Utility under voltage (UMR)    
81/O-U     (81\O) Utility over frequency (UMR)    
81/U-U     (81\U) Utility under frequency (UMR)    
47-U     (47) Utility phase sequence (UMR)    
WXDCR     Watt transducer feedback broken wire detected by PLC    
GMR_T     Generator multifunction relay trip    
UMR_T     Utility multifunction relay trip    
LFL     Low fuel level    

Table 1 lists the alarm codes and the descriptions that can be displayed on the alarm list screen.

List Of Alarms For Medium Voltage

Table 2
Alarms For Medium Voltage    
Alarm     Description    
32-G     (32) Directional power (GMR)    
40Q-G     (40Q) Reverse VAR - loss of field (GMR)    
59-G     (59) Generator over voltage (GMR)    
27-G     (27) Generator under voltage (GMR)    
81O\G     (81\O) Generator over frequency (GMR)    
81U\G     (81\U) Generator under frequency (GMR)    
51N-G     (51N) Generator neutral timed over current (TOC)    
51P-G     (51P) Generator phase timed over current (TOC)    
50N-G     (50N) Generator neutral instantaneous over current (IOC)    
50P-G     (50P) Generator phase instantaneous over current (IOC)    
46-G     (46) Generator phase balance current    
FTP     Fail to parallel    
VREG_A     Voltage regulator alarm    
VREG_S     Voltage regulator shutdown    
ENG_F     Engine fault    
MDA     Methane detector alarm    
LACL     Low after cooling level    
LJWL     Low jacket water level    
UTTR     Utility transfer trip (UTTR)    
PLCBAT     PLC battery low    
COMGMR     PLC to GMR modbus communications loss    
COMUMR     PLC to UMR modbus communications loss    
51G-U     (51G) Utility ground fault (UMR)    
50G-U     (50G) Utility ground fault (UMR)    
59-U     (59) Utility over voltage (UMR)    
27-U     (27) Utility under voltage (UMR)    
81/O-U     (81/O) Utility over frequency (UMR)    
81/U-U     (81/U) Utility under frequency (UMR)    
47-U     (47) Utility phase sequence (UMR)    
WXDCR     Watt transducer feedback broken wire detected by PLC    
UMR_T     Utility multifunction relay trip    
GMR_T     Generator multifunction relay trip    
LFL     Low Fuel Level    

Table 2 lists the alarm codes and the descriptions that can be displayed on the alarm list screen.

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