Emerson 2468CD User Manual

Hydrastep 2468CB and 2468CD Manual 

Relay Output Board Option 

 

3a.2.1.1 Storage Area ............................................................................... 3 

3a.2.1.2 Pre-Installation Inspection 

........................................................... 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 

3a.2.3.1 PCB Interconnections ................................................................. 5 

3a.2.3.2 Relay Output Connections .......................................................... 5 

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 

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