Tyco SafeLINC 4100U Manual Do Utilizador

6-3

 
•  +24V Sig is used to supply the NACs.  It can be made accessible by 

configuring a NAC as an aux power output (normally energized).  The PDI 
has a 24V Sig bus that is only powered when an SPS is plugged directly on 
to it.  (Not in standard configuration).  The 4100 MXP is the only Australian 
approved card that takes power from this bus. All other cards draw power 
from +24V Card. 

•  The battery circuit is supervised every 29 seconds.  The battery test (custom 

control) is for 1 hour once per week. 

•  The battery is connected to the charger but is normally disconnected from the 

bulk supply.  During mains fail, and the 1 hour battery test, the battery gets 
connected to the bulk supply. 

•  The IDNet output is 30V in the normal condition as is used to prolong battery 

standby.  When it is necessary to activate large numbers of output devices on 
IDNet peripherals (such as piezo sounders), the output voltage is increased 
to 35V to provide sufficient voltage at the end of line to activate the piezo. 
The higher voltage state is an alarm condition for the purpose of standby 
battery calculation.  

 

The following table summarizes battery standby capabilities for the SPS. Voltage 
assumed is 24 V, which is the rated battery voltage for lead-acid type batteries. 

•  No alarms (NACs normal) 

•  IDNet LED ON, no IDNet devices connected 

175 mA 

Add to above for each additional set of 50 IDNet devices in 
standby, with IDNet at 30 V 

40 mA 

Total current for fully loaded IDNet channel (250 devices) in 
standby 

375 mA 

•  3 NACs ON 

•  IDNet LED ON, no IDNet devices connected 

185 mA 

Add to above for each set of 50 IDNet devices in alarm, 20 
LEDs ON 

80 mA 

Add to above for each set of 50 IDNet devices in alarm, LEDs 
OFF 

50 mA 

Total current for a fully loaded IDNet channel (250 devices) in 
alarm, 20 LEDs ON  

475 mA 

 

Notes: 
•  Additional standby conditions: Trouble relay activated, power trouble LED 

on, IDNet LED on, battery charger off, auxiliary power load = 0 mA 

•  Additional alarm conditions: Trouble relay activated, power trouble LED 

on, IDNet LED on, battery charger off, auxiliary power load = 0 mA, NAC 
alarm load = 0 mA, IDNet = 35 V