4
INM F890 Rev 1
4
MECHANICAL
4 .1 Mounting Orientation
The F890-CA carriers are designed for mounting on a vertically aligned DIN-rail on a
vertical surface. This method of mounting ensures optimum heat dissipation from the
Power Modules.
4 .2 Enclosure Requirements
4 .2 .1 General Requirements
The assembly may be mounted in hazardous (classified) areas – see Sections 8 & 9.
The following conditions must also be satisfied to ensure safe and reliable operation.
a) Prevent any form of pollution that could compromise the operation of the unit.
For example, choose an unpolluted location or a suitable enclosure to protect the
assembly.
b) Provide an adequate level of mechanical protection. This can be achieved by
selecting a protected location, a suitable enclosure, or a combination of both.
c) Ensure that all cable entries and connections are secure by making provision for
the careful routing and securing of all cables.
d) Provide adequate security against unauthorized interference.
e) Ensure that the permitted ambient temperature range of –40°C to +65°C (derate to
+50°C for the F802 when loaded above 60% of its full load rating) is not exceeded.
Allow for power dissipation within the enclosure and consider the use of shading
against direct sunlight.
4 .2 .2 Outdoor Mounting
If the power system is mounted in an outdoor location, use a suitable enclosure with
a minimum of IP54 ingress protection. A higher level of ingress protection rating will
be necessary if the working atmosphere is or can be corrosive or if the enclosure is
subject to wet or dusty environments.
4 .3 DIN-rail Mounting
The carrier is designed for mounting on 35mm x 7.5mm T-section “top hat” DIN rail to
EN50022 and uses six built-in DIN clamp tabs to hold it on the rail. The F801 power
modules must be removed from the carrier to obtain access to the DIN-rail clamp
screws.
4 .3 .1 Mounting Procedure
Before starting to mount the carrier on the DIN rail, rotate all six of the DIN clamp
screws counterclockwise (i.e. unscrew) until the clamping tabs reach the position
shown in Figure 3a and none of the tabs extend into the channel for the DIN rail.
a)
b)
Figure 3 -
DIN rail clamp positions before mounting
