Alstom SHPM 101 - Page 57

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Contents
1. INTRODUCTION 1
2. MAIN FEATURES 2
2.1 Quadramho Models Available 2
3. MECHANICAL LAYOUT 3
4. MODULE DESCRIPTIONS 4
4.1 Relay block diagram 4
4.2 The voltage input module RFV 04 4
4.3 The current input module RFC 15 5
4.4 Phase and neutral module RRZO7 6
4.5 Level detector board ZH0729 6
4.6 Phase and neutral and IR setting board ZH0730 7
4.7 Zone1/Zone2 module RRM 08 8
4.7.1 Setting board (ZH0732) 8
4.7.2 Comparator board ZH0731 9
4.8 Zone 3 module RRM 09 10
4.8.1 Setting board ZH0734 10
4.8.2 Comparator board ZH0733 10
4.9 Scheme logic module RCL 10 11
4.9.1 Scheme logic functions 11
4.9.2 Scheme logic settings and indications 12
4.9.3 Indications 12
4.9.4 Code switches 12
4.9.5 Switch banks 12
4.9.6 Push button 13
4.9.7 Test socket 13
4.9.8 General description of microcontroller associated hardware 14
4.9.9 Microcontroller and program memory 14
4.9. 10 Programmable peripheral interface 14
4.9.11 Multiplexed port 14
4.9.12 Hardware reset of microcontroller and peripheral 15
4.9.13 +5V rail monitor 15
4. 9.14 Monitoring of scheme logic software 15
4.9.15 Inoperative alarm 16
4.9.16 Zone 1 interrupt gating logic 16
4.9.17 Synchronised polarising (memory) hardware 16
4.9.18 Indication 16
4.9.19 Opto isolators 17
4.9.20 Zero sequence voltage level detector 17
4.9.21 High set current level detectors 17
4.9.22 Power swing blocking hardware 18
4.9.23 Scheme logic software 18
4.9.24 INIT subroutine 18
4.9.25 The main loop 18
4.9.26 Z1 NT subroutine 19
4.9.27 FTRIP subroutine 19