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Power Barrier Board Diagnostics
Figure 7 Power Barrier Board
Table 1 . Power Barrier Board Diagnostics
ID
Component or Indicator
Function
D4
LED (green) IS Power
D5
LED (green)
Power
F3 Fuse, 400 mA, 250 V
F4 Fuse, 400 mA, 250 V
If either F3 or F4 is blown, there is no power
to the IS location. D4 is out.
J4
Connector
24 Vdc power input
J5
Connector +12 Vdc intrinsically safe power output
332709B
21