Harman Martin VC-Feeder, User Manual

Page: 12 / 32

12 Martin Professional™ VC-Feeder user manual
Connections
Warning! Check that the installation is isolated from AC mains power
and that power cannot be reapplied during work on cables and
connections.
Warning! Before connecting devices to the output (OUT) or
throughput (THRU) connectors of a VC-Feeder, check carefully the
information about system layouts and maximum safe limits in
“Safety information” on page 4 of this manual, and in the user
manuals of the devices.
Warning! When linking a VC-Feeder to other devices using its
throughput connector, respect the maximum limits given in display
device user manuals for the number of devices that can be linked in a
chain and maximum permitted cable lengths.
Important! Do not connect more than twenty (20) VC-Feeder devices
in one linked chain, even if you have not reached the maximum
permitted current draw for the chain.
Figure 3 gives an overview how the VC-Feeder is connected.
Figure 3: VC-Feeder connections overview
48 VDC power + data
15 VDC power + data output (OUT) to display devices
throughput (THRU) to
48 VDC power + data
input (IN) from power
and data source other VC-Feeders
Maximum total
current 7.5 A or
max. PSU output
current,
whichever is
lower