Horner APG XLt OCS - Manual (Page 19)

MAN0878-04-EN CH.3
August 12, 2009 Page 19 of 100 ECN # 979
3.6.4 Orientation
When panel-mounted, there are no orientation restrictions on the XLe/XLt. However, the
orientation shown in Figure 3-3 provides for optimum readability of the screen and ease of use of
the keypad. When DIN Rail mounted, observe the orientation shown in Figure 3-2.
3.6.5 Noise
Consider the impact on the panel layout design and clearance requirements if noise suppression
devices are needed. Be sure to maintain an adequate distance between the XLe/XLt and noisy
devices such as relays, motor starters, etc.
3.6.6 Shock and Vibration
The XLe/XLt has been designed to operate in typical industrial environments that may inflict some
shock and vibration on the unit. For applications that may inflict excessive shock and vibration
please use proper dampening techniques or relocate the XLe/XLt to a location that minimizes
shock and/or vibration.
3.6.7 Panel Layout Design and Clearance Checklist
The following list provides highlights of panel layout design factors.
____Meets the electrical code and applicable standards for proper grounding, etc.?
____Meets the panel manufacturer’s requirements for grounding, etc.?
____Is the panel box properly connected to earth ground? Is the panel door properly grounded? Has the
appropriate procedure been followed to properly ground the devices in the panel box and on the
panel door?
____Are minimum clearance requirements met? (See Table 3.1.) Can the panel door be easily opened
and closed? Is there adequate space between device bases as well as the sides of the panel and
wiring ducts?
____Is the panel box deep enough to accommodate the XLe/XLt?
____Is there adequate ventilation? Is the ambient temperature range maintained? Are cooling or heating
devices required?
____Are noise suppression devices or isolation transformers required? Is there adequate distance
between the base of the XLe/XLt and noisy devices such as relays or motor starters? Ensure that
power and signal wires are not routed in the same conduit.
____Are there other requirements that impact the particular system, which need to be considered?