GE P24DM User Manual

4.1.1 Front Panel Compartments 37
4.1.2 Keypad 38
4.1.3 Front Serial Port (SK1) 38
4.1.4 Front Parallel Port (SK2) 39
4.1.5 Fixed Function LEDs 39
4.1.6 Function Keys 39
4.1.7 Programable LEDs 40
5 Rear Panel 41
6 Boards and Modules 43
6.1 PCBs 43
6.2 Subassemblies 43
6.3 Main Processor Board 44
6.4 Power Supply Board 45
6.4.1 Watchdog 47
6.4.2 Rear Serial Port 48
6.5 Input Module - 1 Transformer Board 49
6.5.1 Input Module Circuit Description 50
6.5.2 Transformer Board 51
6.5.3 Input Board 52
6.6 Standard Output Relay Board 53
6.7 IRIG-B Board 54
6.8 Fibre Optic Board 55
6.9 Rear Communication Board 56
6.10 Ethernet Board 56
6.11 Redundant Ethernet Board 58
6.12 Coprocessor Board 60
6.12.1 Current Differential Inputs 60
6.12.2 Coprocessor board with 1PPS input 60
Chapter 4 Software Design 63
1 Chapter Overview 65
2 Sofware Design Overview 66
3 System Level Software 67
3.1 Real Time Operating System 67
3.2 System Services Software 67
3.3 Self-Diagnostic Software 67
3.4 Startup Self-Testing 67
3.4.1 System Boot 67
3.4.2 System Level Software Initialisation 68
3.4.3 Platform Software Initialisation and Monitoring 68
3.5 Continuous Self-Testing 68
4 Platform Software 70
4.1 Record Logging 70
4.2 Settings Database 70
4.3 Interfaces 70
5 Protection and Control Functions 71
5.1 Acquisition of Samples 71
5.2 Frequency Tracking 71
5.3 Direct Use of Sample Values 71
5.4 System Level Software Initialisation 71
5.5 Distance Protection 72
5.6 Fourier Signal Processing 72
5.7 Programmable Scheme Logic 73
5.8 Event Recording 74
5.9 Disturbance Recorder 74
5.10 Fault Locator 74
Contents P543i/P545i
ii P54x1i-TM-EN-1

GE P24DM Specifications

General

Brand	GE
Model	P24DM
Category	Control Unit
Language	English