Tyco MX4428 - Chapter 3 Device Information and Programming; 3.1 Device Types; 3.2 Device Handling Capability; 3.3 Output Control

Document: LT0273 MX4428 MXP Engineering / Technical Manual
Issue 1.5 24 March 2006 Page v
3.25.2 SAD ..............................................................................................................................3-51
3.25.3 AVF/SAD ......................................................................................................................3-51
3.25.4 FLOWSWITCH .............................................................................................................3-51
CHAPTER 4 ANALOGUE LOOP DESIGN CONSIDERATIONS ...........................4-1
4.1 ANALOGUE LOOP CONFIGURATION SELECTION .......................................................... 4-2
4.1.1 LINES & LOOPS ............................................................................................................4-2
4.1.2 LOOP FAULT TOLERANCE ..........................................................................................4-2
4.1.3 AS1670.1 DESIGN REQUIREMENTS...........................................................................4-2
4.1.4 NZS4512 DESIGN REQUIREMENTS ...........................................................................4-2
4.2 ANALOGUE LOOP/LINE LAYOUTS....................................................................................4-3
4.2.1 LINE MODE....................................................................................................................4-3
4.2.2 LOOP DESIGN WITH SHORT CIRCUIT ISOLATORS..................................................4-3
4.2.3 STAR CONNECTION OF ANALOGUE LINES .............................................................. 4-5
4.2.4 SPURS ...........................................................................................................................4-5
4.3 CABLE SELECTION CONSIDERATIONS............................................................................4-6
4.4 AC REQUIREMENTS............................................................................................................ 4-7
4.4.1 GENERAL.......................................................................................................................4-7
4.5 DC CONSIDERATIONS.........................................................................................................4-7
4.5.1 GENERAL.......................................................................................................................4-7
4.6 MECHANICAL CONSIDERATIONS ..................................................................................... 4-7
4.7 NOISE CONSIDERATIONS ..................................................................................................4-8
CHAPTER 5 MXP CURRENT CONSUMPTION.....................................................5-1
5.1 THEORY ................................................................................................................................5-2
5.1.1 ALARM CURRENT.........................................................................................................5-2
5.1.2 QUIESCENT CURRENT................................................................................................ 5-3
5.1.3 HEAT LOSS....................................................................................................................5-3
CHAPTER 6 EVENT LOG AND STATUS AT MX4428 ..........................................6-1
6.1 RETURNED ANALOG VALUES...........................................................................................6-2
6.2 FAULT AND ALARM EVENT LOG.......................................................................................6-3
CHAPTER 7 MXP TECHNICAL DESCRIPTION....................................................7-1
7.1 GENERAL.............................................................................................................................. 7-2
7.2 CIRCUIT DESCRIPTION.......................................................................................................7-3
7.2.1 BLOCK DIAGRAM..........................................................................................................7-3
7.2.2 MICROPROCESSOR & LOGIC CIRCUITRY ................................................................7-3
7.2.3 MXP POWER SUPPLY..................................................................................................7-4
7.2.4 MX4428 LOOP INTERFACE..........................................................................................7-6
7.2.5 ANALOGUE LOOP INTERFACE...................................................................................7-7
7.3 MXP ADJUSTMENTS..........................................................................................................7-10
7.3.1 40V ISO SUPPLY VOLTAGE ADJUSTMENT .............................................................7-10
7.3.2 TX DATA VOLTAGE ADJUSTMENT...........................................................................7-10
7.3.3 40V ISO SUPPLY CURRENT LIMIT ADJUSTMENT...................................................7-10
7.4 MXP LED INDICATIONS.....................................................................................................7-11
7.5 PARTS LIST ........................................................................................................................7-12
CHAPTER 8 MXP DIAGNOSTIC TERMINAL ........................................................8-1
8.1 MXP DIAGNOSTIC TERMINAL OPERATION...................................................................... 8-2
8.1.1 INTRODUCTION............................................................................................................8-2
8.1.2 MENU OF COMMANDS.................................................................................................8-2
8.1.3 SELECTING POINTS FOR MONITORING....................................................................8-2
8.1.4 DISPLAYING DEVICE ANALOGUE VALUES - CV, TV, ETC....................................... 8-3
8.1.5 ST (STATUS COMMAND) .............................................................................................8-5
8.1.6 ANALOG LOOP DIAGNOSTICS.................................................................................... 8-6
8.1.7 ADVANCED COMMANDS .............................................................................................8-8
8.1.8 MX4428 DIAGNOSTICS ................................................................................................8-8