Hardware Description; Mounting Instructions - Pepperl+Fuchs 1/209 Handbuch

Trip Amplifier 1/209

Hardware Description

3 Hardware Description
3.1

Mounting Instructions

Devices must be mounted outside hazardous areas.
Attention
The devices are manufactured as narrow plug-in units for 19" racks. The exact
dimensions can be taken from the section "Technical Data".
The racks should be mounted in easily accessible positions on walls, in panels, in
cabinets or protective enclosures so that the front panels of the devices take on a vertical
position. The mounting position should be dry and dust-free. Heavy vibrations,
mechanical stress, and strong heat sources are unacceptable. Maximum ambient
conditions must be observed.
The units are EMC-RFI tested to NAMUR AK EMV (see section "Technical Data").
Despite their excellent RFI immunity, the mounting position should not be in the
immediate vicinity of strong electromagnetic fields and be low on RFI. To avoid radio
frequency interference shielded racks and screened cables are recommended. Please
observe installation code of practice.
The units are pushed into the racks fitted with guide rails and female connectors until the
front panels are flush with the front frame of the rack. The units are then connected to the
external wiring via the female connectors. Screw or snap-in fasteners secure the units
against unintentional removal from the rack.
The following mounting recommendations should be observed. A maximum of 21 devices
can be fitted in a rack. Power dissipation can be taken form the section "Technical Data".
In order to disperse the heat sufficiently the racks should be mounted in such a way as to
ensure best ventilation. The following advice may be useful:
1. It is recommended in particular that permanent overvoltages should be avoided.
2. In particularly adverse operating conditions check the ambient temperature in the
vicinity of the devices (approx. 1 cm away from the front panels). The temperature
should not exceed 60 °C under worst case conditions.
3. Normally natural convection is sufficient for 19" racks in open frames. It has to be
noted however that the topmost rack should not be covered over unless by a cover
plate with sufficient air vents to avoid heat build-up.
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