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Compact Fieldbus Power Hub,Generic Interface
Safety
HD2-DM-B
Pepperl+Fuchs GmbH
Fieldbus Power Hub
TÜV 04 ATEX 2500 X
II 3G EEx nA C IIC T4
1.7
Intended Use
The Compact Power Hub is intended to power eight FOUNDATION Fieldbus H1 segments in
redundant mode according to IEC 61158-2.
The Compact Power Hub may be installed in Zone 2 or Class I, Division 2 hazardous areas.
Types of protection are Ex nA (non-arcing) for Zone 2 Gas Groups IIC, IIB, IIA, and non-
incendive for use in Class I, Division 2 Gas Groups A, B, C, and D.
Dedicated Power Supply Modules limit the output voltage safely acc. to IEC 60079-11. In
combination with Pepperl+Fuchs Segment Protectors the outputs are specified Ex nl or Ex ic.
Thus, live maintenance at the field device level is permitted.
For further information about hazardous area installation refer to referenced documents see
chapter 6.3.
The devices are only approved for appropriate and intended use. Ignoring these instructions
will void any warranty and absolve the manufacturer from any liability.
The device must only be operated in the ambient temperature range and at the relative
humidity (non-condensing) specified.
1.8
Mounting and Installation
Prior to mounting, installation, and commissioning of the device you should make yourself
familiar with the device and carefully read the instruction manual.
Trunk and spur connectors are only allowed to be manipulated at ambient temperatures
between -5 °C and +70 °C.
The devices may be installed in a corrosive location acc. to ISA-S71.04-1985, severity level
G3.
1.8.1
Mounting Instructions for HD2* Modules
The modules are intended for mounting on an appropriate Fieldbus Power Hub motherboard.
The Power Hub motherboard features a special connection slot for HD2-DM-* diagnostic
modules labeled "Diagnostic Module only". Do not try to plug any other modules into this
connection slot. Other modules may be damaged.
Instruction for redundant systems
Each segment on a redundant motherboard must only be fitted with two power modules of the
same type.
1.8.2
Zone 2 and Div. 2
Connection or disconnection of energized non-intrinsically-safe circuits is only permitted in the
absence of a hazardous atmosphere.
It is necessary to pay particular attention to the type of Fieldbus Power Supply selected for use
on the Power Hub. This determines the type of Zone 2/Div. 2 installations and certified field
instruments that can be connected in Zone 2 or Div. 2 area.
7
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