Safety Information
5
• Do not allow the total length of the cables used in a linked chain of VC-Grid modules to exceed 50 m
(164 ft.) from the 48 VDC power source (Martin P3 PowerPort 1500™, Martin Tripix Power IP66™ or other
external PSU) to the last VC-Grid at the end of the chain.
• Respect the following safety limits:
- If you supply VC-Grid modules with DC power from a
Martin P3 PowerPort 1500™
, do not create a
linked chain that contains more than twelve (12) VC-Grid 8x8 25 modules. Do not connect more than
one linked chain of VC-Grids to one output from a P3 PowerPort 1500.
- If you supply VC-Grid modules with DC power from a
Martin Tripix Power IP66™
, do not create a
linked chain that contains more than eight (8) VC-Grid 8x8 25 modules. Do not connect more than one
linked chain of VC-Grids to the DC power output of a Tripix Power IP66.
- If you supply VC-Grid modules with DC power from a
generic 48 VDC external PSU
(power supply
unit), do not create a linked chain of modules that will exceed the maximum power rating of the PSU
output used to supply that chain with power. Allow 30 W per module in a chain of VC-Grid 8x8 25
modules. However, do not connect more than twelve (12) VC-Grid 8x8 25 modules in one linked chain
even if the PSU can safely supply more than 360 W.
• If you supply a chain of VC-Grids 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 8 A, install an inline
fuseholder with a 7.5 A or 8 A fuse on the circuit that you connect to that DC output.
• Provide a means of locking out AC mains power that allows power to the installation to 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 wet, or if it shows signs of overheating.
• Do not expose the VC-Grid to rain or moisture.
PROTECTION FROM BURNS AND FIRE
• Provide free airflow and a minimum clearance of 10 mm (0.4 in.) around the front of the VC-Grid.
• Do not operate the VC-Grid if the ambient temperature (Ta) exceeds 45° C (113° F).
• Do not modify the VC-Grid in any way not described in this manual or install other than genuine Martin™
parts. Use only accessories approved by Martin™.
PROTECTION FROM INJURY
• When installing the VC-Grid above ground level, ensure that the installation hardware and supporting
structure can hold at least 10 times the weight of all the devices they support.
• In an overhead installation or where the VC-Grid may cause injury if it falls:
- block access below the work area and work from a stable platform whenever installing, servicing or
moving the VC-Grid, and
- as soon as work is completed, check that all hardware and components are securely in place and
fastened to supporting structures.
DC Power source for chain
Maximum number of modules
P3 PowerPort 1500™
12
Tripix Power IP66™
8
Generic 48 VDC external PSU
Allow 30 W per VC-Grid 8x8 25 module.
Do not exceed PSU’s max. power rating.
Do not exceed 12 modules. See details
above.
Table 1: Maximum permitted number of VC-Grid 8x8 25 modules in one chain
