Network Wiring Ground Fault Detection
20
NOTI•FIRE•NET™ PN 50257:E 7/5/01
Note:
On remotely
powered nodes,
ground fault detection
is processed through
the main power
supply (MPS-24A or
MPS-24B).
•
EXAMPLE 2
: If the repeater pass-through switch is set to the OFF position (refer to Figure
18), isolating the three wires on the right from the wires on the left, separate ground fault
detection circuits must be fed through. The node second from the right continues to provide
ground fault detection up to the RPT-W Port B, and must be an AFP-200, AFP-300/AFP-400,
or AM2020/AFP1010/INA with an MPS-24A Main Power Supply. The node on the far left of
the figure provides ground fault detection up to the RPT-W Port A, and also must be an AFP-
200, AFP-300/AFP-400, or AM2020/AFP1010/INA with an MPS-24A Main Power Supply.
Figure 18 Bus (EXAMPLE 2)
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