Safety information
7
PROTECTION FROM ELECTRIC SHOCK
• Read and respect the directions given in the user documentation of all the devices that you intend to
connect to the VDO Dotron, 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.
• Use only the cables specified in this manual and on the Martin® website at www.martin.com to
interconnect devices in the installation. If the specified cables are not long enough for an intended cable
run, consult Martin® for assistance in finding or creating a safe alternative solution.
• Provide a means of locking out AC mains power so that power to the installation can be shut down and
made impossible to reapply, even accidentally, during work on the installation.
• Shut down power to the installation during service and when it is not in use.
• Before applying power to the installation, check that all power distribution equipment and cables are in
perfect condition and rated for the current requirements of all connected devices.
• Isolate the installation from power immediately if any product, power cable or power plug is in any way
damaged, defective, or if it shows signs of overheating.
• Do not immerse the VDO Dotron in water. Do not allow water to collect around the VDO Dotron or
connectors.
• If you supply a chain of VDO Dotron dots with DC power from a
generic 48 VDC external PSU
and the
DC output used does not have constant overcurrent protection that limits current to 7.5 A, install an inline
fuseholder with a 7.5 A fuse on the circuit that you connect to that DC output.
• Do not allow the total number of dots in a linked chain of VDO Dotron dots to exceed the safe limits given
in the tables in the following section of this manual.
Safety limits for connecting devices
Do not exceed the maximum safety limits given below and in the following tables.
•
The maximum permitted total length of a chain of VDO Dotron dots is 50 m (164 ft.).
When you
calculate the total length of the chain, include the cable tails on dots (2 x 25 cm or 2 x 10 ins. per dot) plus
the lead-in cable (cable between the DC power source and the first VDO Dotron dot), plus all extension
cable added between dots.
• The maximum number of VDO Dotron dots that you can connect in one chain depends on the type of
device used as DC power source. Do not exceed the limits given in the following sections.
Martin® P3 PowerPort 1500 safety limits
If you supply VDO Dotron dots with DC power from a Martin® P3 PowerPort 1500:
• Do not connect more than
one linked chain of VDO Dotron dots to one DC output
on the P3
PowerPort 1500. Since the P3 PowerPort 1500 has four DC outputs, you can connect a maximum of four
chains of dots to one P3 PowerPort 1500.
• Do not connect more than
60 VDO Dotron dots maximum per DC output
on the P3 PowerPort 1500.
Martin® P3 PowerPort 1000 IP safety limits
If you supply VDO Dotron dots with DC power from a Martin® P3 PowerPort 1000 IP:
• Do not connect more than
one linked chain of VDO Dotron dots to one DC output
on the P3
PowerPort 1000 IP. Since the P3 PowerPort 1000 IP has four DC outputs, you can connect a maximum of
four chains of dots to one P3 PowerPort 1000 IP.
• Do not connect more than
40 VDO Dotron dots maximum per DC output
on the P3 PowerPort 1000.
Martin® IP66 PSU 240W safety limits
If you supply VDO Dotron dots with DC power from a
Martin® IP66 PSU 240W
external power supply unit
:
• Do not connect more than
one linked chain of VDO Dotron dots to the DC power output
of the
Martin® IP66 PSU 240W.
• Do not connect more than
40 VDO Dotron dots maximum to the DC power output
of the Martin® IP66
PSU 240W.
www.audiovias.com
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