Emerson 200I/48-NT5C05C Manuel D’Utilisation

32   Functional description 

UM5C05C   P0745680   Standard 6.00   October 2001 

The monitoring and control circuits offer the following characteristics : 

• 

soft start 

• 

rectifier fail alarm ( RFA ) 

• 

control for local and remote equalize ( EQL ) 

• 

temporary release ( TR ) 

• 

thermal shutdown ( THSD ) 

• 

input ac monitoring 

• 

local and remote high voltage dc shutdown ( HVSD ) 

• 

local and remote HVSD reset 

• 

fan failure detection 

The output capacitors will be completely discharged ( < 2 V ) two minutes 
after the ac power has been removed and the rectifier has been 
disconnected from the batteries or the parallel rectifiers. 

A dc circuit breaker is provided to protect against current overload and to 
manually disconnect from the power plant. 

When the breaker is in the 0 ( OFF ) position, an RFA is triggered and the 
remote sense leads RG+ and RC– are internally disconnected. The rectifier 
will continue to operate, allowing the adjustment of the FLT, EQL and 
HVSD set points. 

The input ac circuit breaker can be used to locally turn the rectifier ON or 
OFF. The local ON / OFF control overrides any remote control signals 
( for example, TR ). Putting the breaker to OFF causes an RFA to be 
issued and the RFA LED to light up, as long as the rectifier output is 
connected to batteries.