HD2-DM-B
HD2-DM-B
HD2-DM-B
HD2-DM-B
HD2-DM-B
HD2-DM-B
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HD2-DM-B

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Pepperl+Fuchs HD2-DM-B is a four-segment FieldConnex basic diagnostic module that monitors Power Hub supplies, trunk overloads and module-health conditions without separate engineering.
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Technical specifications for HD2-DM-B

  • Manufacturer:
    Pepperl + Fuchs
  • Part Number:
    HD2-DM-B
  • Product Family:
    Pepperl + Fuchs
  • Product Type:
    Basic Diagnostic Module
  • Stock:
    1
  • Monitored segments:
    4
  • Supply voltage:
    19.2...35 V DC
  • Rated current:
    20 mA
  • Power dissipation:
    0.5 W maximum
  • PRI PWR indication:
    Green when primary bulk supply is connected
  • SEC PWR indication:
    Green when secondary bulk supply is connected
  • ERR indication:
    Red, 2 Hz for supply or redundancy fault
  • Alarm output:
    Normally closed voltage-free contact
  • Alarm rating:
    1 A at 50 V DC
  • Segment isolation:
    Functional insulation, 50 Veff
  • Operating temperature:
    -40...70 °C
  • Storage temperature:
    -40...85 °C
  • Relative humidity:
    <95%, non-condensing
  • Housing:
    Polycarbonate, IP20
  • Mounting:
    Fieldbus Power Hub motherboard
  • Weight:
    0.1543 lbs (0.07 kg)
  • Estimated shipping dimensions:
    12.8x1.8x10.6cm
  • Tariff Code:
    8537109090
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Supply Watch Trunk Faults Alarm Contact Hub Position

Features:

  • The plug-in module monitors four FieldConnex Power Hub segments online.
  • Separate LEDs report primary supply, secondary supply and fault conditions.
  • A normally closed contact transfers the diagnostic alarm to an external circuit.
The HD2-DM-B observes supply-module health and connected trunk conditions without carrying the fieldbus power itself.

Power-supply presence, redundancy mismatch and trunk fault information are condensed into local indications for the assembled Power Hub.

Because no additional engineering is required, monitoring begins from the defined motherboard slot when the diagnostic module is installed.

The Pepperl+Fuchs HD2-DM-B Basic Diagnostic Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Pepperl+Fuchs HD2-DM-B Basic Diagnostic Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Bulk-source supervision

  • Primary input: PRI PWR confirms that the first bulk supply reaches the motherboard.
  • Secondary input: SEC PWR identifies the redundant bulk source separately.
  • Pair check: HD2-DM-B detects mismatched power modules in a redundant arrangement.
  • Module health: installed Power Hub modules are included in the operating check.

Separating hub and segment problems

  • Overload: excessive segment demand is included in the diagnostic state.
  • Short circuit: a trunk short contributes to the red fault indication.
  • Four segments: the module covers the trunk paths connected through its Power Hub.
  • Downstream boundary: local status narrows the check before individual field devices are investigated.

Exporting the diagnostic state

  • Contact type: the alarm interface is a normally closed voltage-free contact.
  • External circuit: the contact transfers a hub fault without carrying the fieldbus data path.
  • Load boundary: the receiving circuit remains within the stated current and DC-voltage rating.
  • Online operation: the local LEDs remain available while the remote contact reports the same fault context.

Motherboard integration

  • Plug-in form: HD2-DM-B occupies the diagnostic-module position rather than a power-supply slot.
  • No programming: monitoring starts without a separate software configuration.
  • Connection set: the motherboard carries alarm, diagnostic-bus and redundant-supply interfaces.
  • Cabinet protection: the IP20 module relies on the surrounding approved enclosure and system assembly.
Description
Four FieldConnex segments are supervised by the Pepperl+Fuchs HD2-DM-B Basic Diagnostic Module. The plug-in unit checks bulk-supply presence, power-module operation and trunk overload or short-circuit conditions while remaining separate from the segment power supplies.

Primary and secondary supply LEDs on HD2-DM-B show which bulk sources are connected. A 2 Hz red fault indication covers supply faults and mismatched redundant power-module pairs, allowing the Power Hub condition to be distinguished from an individual field device problem.

For remote alarm handling, HD2-DM-B provides a normally closed voltage-free contact rated at 1 A and 50 V DC. The module performs this online monitoring without a separate engineering configuration and plugs directly into its Power Hub motherboard position.
Alternative Names
HD2DMB HD2 DM B HD2-DM B Pepperl+Fuchs HD2-DM-B P+F HD2-DM-B FieldConnex HD2-DM-B HD2-DM-B Basic Diagnostic Module HD2-DM-8
Technical notes
Pepperl+Fuchs HD2-DM-B is the four-segment FieldConnex Basic Diagnostic Module with dual bulk-supply LEDs, a fault LED and a normally closed alarm contact.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Why cannot Pepperl+Fuchs HD2-DM-B replace a FieldConnex power-supply module?
Pepperl+Fuchs HD2-DM-B performs diagnostics only; it monitors supply and trunk conditions but does not generate the fieldbus-segment power.
Which problems can HD2-DM-B distinguish before individual field devices are checked?
HD2-DM-B checks bulk-supply presence, Power Hub module health, trunk overload or short circuit, and mismatched redundant power-module pairs.
How can an HD2-DM-B fault be passed to an external monitoring circuit?
HD2-DM-B provides a normally closed voltage-free alarm contact rated at 1 A and 50 V DC for the external diagnostic input.
Is separate engineering software required before Pepperl+Fuchs HD2-DM-B can monitor the Power Hub?
No. Pepperl+Fuchs HD2-DM-B is a plug-and-play diagnostic module that begins online monitoring from its motherboard position.
What do the three LED groups mean on HD2-DM-B?
On HD2-DM-B, PRI PWR and SEC PWR show the two bulk supplies, while the red 2 Hz ERR signal identifies a supply or redundancy fault.
How many FieldConnex segment paths are included in one HD2-DM-B diagnostic scope?
One HD2-DM-B is specified for four segments within its FieldConnex Power Hub arrangement.

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