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Alarm 1
382
L40EX_A_ALM
383
L40EX_Y_ALM
384
L30BRGFAIL_A
385
L30DEEXTRP_A EX2K DE–Excitation Trip
386
L46EX_PPTALM EX2K PPT Phase Unbal-
387
L30SCRFAIL_A
388
L30EX_TRIP_A
389
L30SS_FAIL_A
390
L74CR
–ALM
391
L74G1_ALM
18
SPEEDTRONIC Mark V Annunciator Troubleshooting Chart
EX2K Loss Of Excitation
Loss Of Current To Field
Automatically Transfer To
The Hot Backup Core
EX2k Loss Of Excitation
Excitation Exceeded The
Trip
Low Level Setpoint. Sys-
tem Switched To Hot
Backup
EX2K One Bridge Failed
Bad SCR PackageTrouble
ShootThe PCMProtection
Core Should Transfer To
Hot BackUp
Trip Due To Current De-
tected In The Excitation
Module While Operating
Indication Of AC Line
ance Trip
Drop Or Imbalance Be-
tween Line To Line Volt-
age
EX2K SCR Conduction
Problem In PCM Module.
Failure
Switched To Hot Backup
EX2K Trip
Anything That Trips The
Excitation Listed In
GEH–6121 Table B–1
Status–S Communication
Loss Of Link Presence Be-
Link Failed
tween IOS And EX2000
Cores
DGP Failure Initiate Shut-
DGP Self Test Failure To-
down
tal Loss Of Protective
Functions,Automatic Shut-
down
DGP Has Tripped 52G
Loss Of Protective Func-
tions,Automatic Shutdown
Trouble Shoot Master 1 Core
Go To Gen/EX2K Control Screen, Check
Fault Code , Click On Fault Code Help
Also Check GEH6121 Pg.8–10
C\heck PCM Module
Go To Gen/EX2K Control Screen, Check
Fault Code , Click On Fault Code Help
Also Check GEH6121 Pg.8–10
Go To Gen/EX2K Control Screen, Check
Fault Code , Click On Fault Code Help
Also Check GEH6121 Pg.8–10
If "V/HZ Active " LED is Lit, lower The
Excitation Until Clear, Then Reset The
Alarm
If "V/HZ Active" LED is Clear, Reset
Alarm At IOS
If "V/HZ Active " LED is Lit, lower The
Excitation Until Clear, Then Reset The
Alarm
If "V/HZ Active" LED is Clear, Reset
Alarm At IOS
Check Coaxial Cables To IOS For Problem-
Verify IOS availability At The Exciter And
Operate The Exciter Until Problem Is Cor-
rectedGo To Gen/EX2K Control Screen,
Check Fault Code , Click On Fault Code
HelpAlso Check GEH6121 Pg.8–10
Check DGP , Fault Report,Event Mes-
sages,Error Messages
Check DGP , Fault Report,Event Mes-
sages,Error Messages
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