Contemporary Control Systems BASrouter Installation Guide (Firmware 2.x) - Manual (Page 8)

TD071200-0IK
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side of the connection. Connect the HOT side of the secondary
to either the HI or the HIB input on the router and the LO side to
COM on the router. All other half-wave devices sharing the same
AC power source need to follow the same convention. When
using a DC power source, connect the positive terminal of the
source to either the HI or the HIB input and the negative terminal
to COM on the router. Reversing polarity to the router will not
damage the router. If shielded cable is used, it is recommended
to tie all shield segments together and connect one of the shield
ends to chassis while taping back the other.
For MS/TP devices that share a power source with the BASRT-B,
see Figure 7 for proper 2-wire bus connections and Figure 8 for
proper 3-wire bus connections.
WARNING: Devices powered from a common AC source
could be damaged if a mix of half-wave and full-wave rectified
devices exist. If you are not sure of the type of rectifier used by
another device, do not share the AC source with it.
Figure 7 — 2-wire MS/TP Bus with Shared Power Source