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The basic 4100U-S1 has a Fuse Distribution Board mounted on the SPS chassis and
connected to the Auxiliary Power terminals. This provides four sets of supply terminals,
each individually fused at 1A, but the collective capacity is still limited to 2A from the
Auxiliary Power supply. The fuses are not directly supervised.
Figure 2-4. System Power Supply
Continued on next page
Introduction to 4100U-S1 Cabinet, Continued
CITY / RELAY CARD
MOUNTING AREA
CITY CARD
CONNECTOR
(
P7
)
AUXILIARY RELAY
TERMINAL BLOCK
(TB4)
AUXILIARY POWER
TERMINAL BLOCK
(TB3)
AC
CONNECTOR
(under board)
BATTERY
CONNECTORS:
P4
P5
POWER/COMM TO
CPU
MOTHERBOARD
(P8)
DEVICE ADDRESS
SWITCH (SW1)
IDNET SHIELD JUMPER
(P2)
CITY/RELAY CARD
TROUBLE INDICATION
JUMPER (P3)
EARTH
FAULT
MONITOR
JUMPER
(
P1
)
NAC TERMINAL BLOCK (TB2)
IDNET TERMINAL BLOCK (TB1)
POWER/COMM TO
NEXT PDI (P6)
24V IN
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
F4 F1F3 F2
FUSE DISTRIBUTION BOARD