Harman Martin 90357040, Руководство пользователя

Страница: 5 / 32

Safety information 5
PROTECTION FROM ELECTRIC SHOCK
• Follow carefully the directions given in the user manuals of all the
devices that you intend to connect to the VC-Feeder, particularly the
instructions, warnings and limits that apply to:
- system layout,
- connections to other devices,
- specified cables,
- maximum cable lengths, and
- maximum number of devices that can be connected.
• The VC-Feeder accepts input power at 48 VDC nominal via its
combined power/data input connector marked IN. Do not supply it with
power at any other voltage.
• The VC-Feeder can relay power at 48 VDC nominal via its throughput
connector marked THRU. Connect only devices that accept 48 VDC to
the THRU connector.
• The VC-Feeder can supply power at 15 VDC nominal via its combined
power/data output connector marked OUT. Connect only devices that
accept 15 VDC to the THRU connector.
• A linked chain that consists of one or more VC-Feeders plus display
devices can draw a safe maximum total current of 7.5 A. Do not create
an interconnected chain of devices with a total combined current draw
that exceeds this 7.5 A limit.
If the device used to supply the chain with DC power has a maximum
current rating that is less than 7.5 A, it is the device’s maximum current
rating that determines the maximum current for the chain. For example,
the Martin Tripix Power IP66™ has a maximum current rating of 5 A. If
you use the Tripix Power IP66 to supply a chain with DC power, do not
create an interconnected chain of devices with a total combined current
draw that exceeds 5 A.
This means that if the total current draw of a chain of devices has
reached
either the maximum current rating for the PSU output or 7.5 A
– whichever of these two figures is lower – you must begin a new
chain that is connected to a new PSU output if you need to supply
power to more devices.
If you take off DC power at the end of a chain of VC-Feeders, include
the current draw of any additional devices in the current draw of the
chain and do not exceed the maximum limits given above.
• Use only the cables specified by Martin™ for the devices concerned to
interconnect them. Do not exceed the maximum lengths for cable runs
specified in this manual and in display device user manuals. If the
specified cables are not long enough for an intended cable run, consult
Martin™ for assistance in finding or creating a safe alternative cable.