Tyco SafeLINC 4100U Manual Do Utilizador

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7-4
 
 
To connect the SPS to reverse-polarity, non-addressable notification appliances using 
Class A wiring, read the following instructions and refer to the figure below. 
 
1.  Route wire (between 0.75 mm
2
 and 4 mm
2
) from the “B+”, “B-”, outputs on TB2 
of the SPS to the appropriate inputs on a peripheral notification appliance. Use 
NAC1, NAC2, or NAC3 as configured.. 
2.  Route wire from the first appliance to the next one. Repeat for each appliance. 
3.  Route wire from the last appliance to the A+ and A- inputs on the same NAC 
circuit of TB1 of the SPS. 
4.  Repeat steps 1 through 3 for each NAC output you want to use. 
5.  Leave the 10 K, ½ W, brown/black/orange resistor (378-030) on each the “B+” 
to “B-” terminals of each unused NAC. No external end-of-line resistor is 
needed for circuits in use. 
6.  If the appliance/device to be used does not have an integral diode, a sufficiently 
rated  blocking diode must be fitted between the incoming +ve wire and the +ve 
terminals of the device with cathode to the device. 
 
P1
3
2
1
B+ B- A+ A-
TYPICAL
APPLIANCE
RED
RED
RED
NAC1
B+ B- A+ A-
NAC1
B+ B- A+ A-
NAC1
LED1
LED2
LED3
TYPICAL
APPLIANCE
BLK
BLK
BLK
NAC2
NAC3
 
Figure 7-2. Class A NAC Wiring 
Continued on next page 
 
 
SPS NAC Field Wiring Guidelines, 
Continued
 
Class A NAC Wiring 
SPS NAC Field Wiring Guidelines, 
Continued
 
0.75 mm
2
 to 4 mm
2
 
Important:  Conductors must test free of 
all grounds. 
Leave the 378-030 EOL 
Resistor (10 K Ohm, ½ W; 
brown/black/orange) on 
unused B+/B- terminals 
Ferrite beads
required for EMC
compliance. Use 
SX0005 or kit 
4100-5129.