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MLC 104 IP Plus Series • Reference Material
150
NOTE:
If the MLC (and any accessories such as control modules or an IR Link) is
not mounted to a grounded metal wall box or grounded metal equipment rack,
•
Ground each faceplate directly to an earth ground.
Or
•
Tie each faceplate to its circuit board and power supply via a ground pin on
one of the connectors.
Do not tie a product faceplate to both a separate earth ground and the circuit
ground (via a connector pin). If you tie a product to two different ground sources,
you may introduce ground loops or other grounding-related problems into the
system.
NOTE:
For the installation to meet UL requirements and to comply with National
Electrical Code (NEC), the MLC must be installed in a UL Listed junction box.
The end user or installer must furnish the junction box; it is not included with
the MLC. See
Mounting the MLC to an Electrical Box or Mud Ring
previous page.
Rack Mounting an MLC 104 IP Plus L
UL rack mounting guidelines
The following
Underwriters Laboratories (UL)
guidelines pertain to the safe installation of
the MLC in a rack.
1.
Elevated operating ambient temperature
— If installed in a closed or multi-unit
rack assembly, the operating ambient temperature of the rack environment may be
greater than room ambient temperature. Therefore, install the MLC in an environment
compatible with the maximum ambient temperature (Tma = +122 °F, +50 °C) specified
by Extron.
2.
Reduced air flow
— Install the equipment in a rack so that the amount of air flow
required for safe operation of the equipment is not compromised.
3.
Mechanical loading
— Mount the equipment in the rack so that a hazardous
condition is not achieved due to uneven mechanical loading.
4.
Circuit overloading
— Connect the equipment to the supply circuit and consider
the effect that circuit overloading might have on overcurrent protection and supply
wiring. Appropriate consideration of equipment nameplate ratings should be used when
addressing this concern.
5.
Reliable earthing (grounding)
— Maintain reliable grounding of rack-mounted
equipment. Pay particular attention to supply connections other than direct connections
to the branch circuit (such as use of power strips).
Summary of Contents for MLC 104 IP Plus Series
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