4.4.1.3 UNDER FREQUENCY ROLL OFF (UFRO) PRESET........................................... 35
4.4.2 ALTERNATE CONFIGURATIONS.............................................................................. 36
4.4.3 ALTERNATE STABILITIES......................................................................................... 36
4.4.4 PROTECTIONS.......................................................................................................... 36
4.5 FINAL CHECK.................................................................................................................. 37
5OPERATION......................................................................................................38
5.1 CONTROLS AND INDICATIONS...................................................................................... 38
5.1.1 PRESETS................................................................................................................... 39
5.1.1.1 VOLTAGE SET POINT........................................................................................ 39
5.1.1.2 DROOP............................................................................................................... 39
5.1.1.3 UNDER FREQUENCY ROLL OFF (UFRO).......................................................... 41
5.1.1.4 PROPORTIONAL................................................................................................ 42
5.1.1.5 INTEGRAL .......................................................................................................... 42
5.1.2 DIP SWITCHES.......................................................................................................... 43
5.1.2.1 DIP SWITCH 1 .................................................................................................... 43
5.1.2.2 DIP SWITCH 2 AND 3......................................................................................... 43
5.2.1 STATUS LED............................................................................................................. 44
5.3 EXTERNAL AC VOLTAGE BIAS...................................................................................... 45
6ALARMS............................................................................................................46
6.1 START-UP TRIP............................................................................................................... 46
6.2 LOSS OF FEEDBACK...................................................................................................... 46
6.3 OVER EXCITATION.......................................................................................................... 46
6.4 UNDER FREQUENCY....................................................................................................... 46
6.5 POTENTIOMETER FAULT ............................................................................................... 46
7FAULT DIAGNOSIS ..........................................................................................47
8CAN INTERFACE SPECIFICATION .................................................................48
8.1 INSTRUMENTATION AND CONTROL ............................................................................. 48
8.1.1 BROADCAST MESSAGES......................................................................................... 48
8.1.1.1 VREP –VOLTAGE REGULATOR EXCITATION STATUS................................... 48
8.1.1.2 VROM –VOLTAGE REGULATOR OPERATING MODE...................................... 49
8.1.1.3 GAAC –GENERATOR AVERAGE BASIC AC QUANTITIES ............................... 49
8.1.1.4 GPAAC - GENERATOR PHASE A BASIC AC QUANTITIES................................ 49
8.1.1.5 GPBAC - GENERATOR PHASE B BASIC AC QUANTITIES................................ 49
8.1.1.6 GPCAC - GENERATOR PHASE C BASIC AC QUANTITIES............................... 50
8.1.1.7 DM1 (DIAGNOSTIC MESSAGE 1)....................................................................... 50
8.1.1.8 PROPB 01 –AVR SETTINGS ............................................................................. 50
8.1.1.9 PROPB 02 –AVR EXTERNAL BIAS.................................................................... 50
8.1.1.10 PROPB 03 –AVR STATUS AND VERSION........................................................ 51
8.1.1.11 PROPB 04 –AVR EXCITATION VALUES ........................................................... 51
8.1.1.12 CONFIGURABLE CAN MESSAGE 1................................................................... 51
8.1.1.13 CONFIGURABLE CAN MESSAGE 2................................................................... 52
8.1.2 RECEIVED MESSAGES............................................................................................. 52
8.1.2.1 VOLTAGE BIAS................................................................................................... 52
8.1.3 ALTERNATIVE CONFIGURATION............................................................................. 52
8.1.4 STABILITY SELECTION............................................................................................. 52
8.2 PROPRIETARY COMMANDS........................................................................................... 53
8.2.1 CONFIGURATION...................................................................................................... 53
8.2.2 MESSAGE FORMAT.................................................................................................. 53
8.2.3 DATA BYTE FORMAT................................................................................................ 53
8.2.3.1 WRITE COMMAND ............................................................................................. 53
8.2.3.2 READ COMMAND............................................................................................... 54
8.2.3.3 STORE CONFIGURATION COMMAND .............................................................. 54
8.2.3.4 ALARM RESET COMMAND................................................................................ 54
8.2.4 ERROR CODES......................................................................................................... 55
8.2.5 DATA ADDRESSES................................................................................................... 55
8.2.5.1 STATUS FLAG LIST............................................................................................ 56
8.2.5.2 DIP SWITCH POSITION LIST ............................................................................. 57