Tyco SafeLINC 4100U Manual Do Utilizador

 

 

D-8 

 
 

The illustration below shows a MINIPLEX system with one transponder that has three 
earth faults: 

•  SPS NAC on the SPS in the Main Panel 
•  RPS AUXPWR output on the RPS in Transponder 1 
•  IDNet channel in Transponder 1 

Transponder

1

Main

Panel

RUI

SPS

 NAC 2

RPS

AUXPW R

Iso

1

Iso

2

= Ground Fault

RPS

SPS

IDNet

IDNet

Channel

M2

 

The panel reports two earth faults—one for each power supply. The third fault is as yet 
unreported. 
 
The example below shows the progression of events in finding and repairing the three 
faults. They are presented as instructions to a technician who does not yet know about the 
third fault. 
 
A.  Find and repair the fault in the main panel. 

1.  After opening the Earth Fault Search diagnostic menu option, select Location 

Search. 

9.  Select the SPS located in the Main Panel (this selects the Main Panel as the 

location for the search). 

10.  When prompted, select exclusion of AUXPWR circuits. 

11.  Start the search. (The panel turns on the earth fault search trouble pseudo-point 

and the keypad inactivity utility pseudo-point to disable timeout during the 
search). 

12.  The search completes. The panel indicates that NAC 2 on the SPS has the earth 

fault. All slaves are reset (and the panel turns off the earth fault search trouble 
pseudo-point). 

13.  Repair the earth fault on NAC 2. When this is done, the trouble from the SPS 

clears but the trouble from the RPS is still indicated.