Emerson Hydrastep 2468 series Operating Manual page 69

Hydrastep 2468CB and 2468CD Manual
2468 - Relay Output Board Option
3A.1 GENERAL DESCRIPTION
3A.2 INSTALLATION
3A.2.1
3A.2.2
3A.2.3
3A.3 RELAY BOARD CONFIGURATION
3A.3.1
3A.3.2
3A.4 COMPONENT REPLACEMENT
3A.5 SPECIFICATION
24685034
Contents
STORAGE & PRE-INSTALLATION INSPECTION ................................... 3
3a.2.1.1 Storage Area ............................................................................... 3
3a.2.1.2 Pre-Installation Inspection ........................................................... 3
MECHANICAL INSTALLATION ................................................................ 3
3a.2.2.1 Fitting the Nylon Spacers to the Relay Output Board ................. 4
3a.2.2.2 Mounting the Relay Output Board on to the Input Board ............ 4
ELECTRICAL INSTALLATION ................................................................. 5
3a.2.3.1 PCB Interconnections ................................................................. 5
3a.2.3.2 Relay Output Connections .......................................................... 5
RELAY OUTPUT BOARD ......................................................................... 7
3a.3.1.1 Configuring the Relay Output Board ........................................... 7
3a.3.1.2 Electrode/Relay Selection (Relays RL1, RL2, RL3 & RL4) -
SW1 To SW4 .............................................................................. 7
3a.3.1.3 Relay Energisation ('In Steam' or 'In Water') - SW5 ................... 8
3a.3.1.4 Electrode/Alarm Operation (RL1 Function Only) - SW6 ............. 8
3a.3.1.5 System Fault Output ................................................................... 8
ALARM AND TRIPPING FACILITIES ....................................................... 9
3a.3.2.1 Philosophy ................................................................................... 9
3a.3.2.2 Relay Interconnections for Alarm/Tripping Systems ................... 9
3a.3.2.3 'One out of Two' Relay Alarm System ...................................... 10
3a.3.2.4 'Two out of Two' Relay Alarm System ...................................... 11
3a.3.2.5 'Two out of Four' Relay Alarm System ..................................... 12
3a.3.2.6 'Two out of Three' Relay Alarm System ................................... 14
3a.4.1 REPLACEMENT OF NYLON SPACERS ................................. 15
3a.4.2 PARTS LIST - RELAY OUTPUT BOARD 24680504 ................ 15
Relay Output Board Option
3a
Page No.
3
3
6
15
16
3a-1