Serviceline Industrial Sensors
Serviceline Explosion Protection

AS-Interface power supply VAN-24DC-K28

  • Output current max. 4 A
  • PELV
  • Input voltage 24 V DC
  • LED operating display
  • 90.5 % efficiency level

Please note: All product-related documents, such as certificates, declarations of conformity, etc., which were issued prior to the conversion under the name Pepperl+Fuchs GmbH or Pepperl+Fuchs AG, also apply to Pepperl+Fuchs SE.

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of  VAN-24DC-K28

Product Description
AS-Interface power supply, data decoupling, 4 A, 24 V DC input voltage
General specifications
UL File NumberE223176
MTBF100 a
Indicators/operating means
LED AS-i okLED green:
ON: AS-Interface voltage OK
OFF: overload or no supply voltage
Electrical specifications
FusingT10A HBC (not accessible)
Rated operating voltage24 VDC
18 ... 32,4 VDC (continuous operation)
14 ... 18 VDC (max. 60 s or with derating)
max. 36 VDC (max. continuous input voltage with no damage to the DC/DC converter)
Rated operating current5.6 A at 24 VDC
Efficiencytyp. 90.5 % (24 VDC, 4 A)
Short-circuit protection/overload> 5 A
< 9 A
Current limit> 4.4 A
Voltage30.55 VDC ±3 % fixed
Current4 A
Residual ripple< 50 mVSS (500 kHz bandwidth, 50 Ω measurement, with resistive load)
Overvoltage protectedmax. 36 V
Compliance with standards and directives
Directive conformity
EMC Directive 2004/108/ECEN 55022:2006, EN 55011:2009 Class B
EN 61000-6-3:2001 , EN 61204-3:2001
Standard conformity
Noise immunityEN 61000-6-2:2005
Emitted interferenceEN 61000-6-3:2007
EN 61000-3-2:2010
EN 61000-3-3:2009
Galvanic isolationIEC 60364-4-41:2005 (PELV)
IEC 60950:1999 (SELV)
Degree of protectionIEC 60529:2001
Pollution degreeEN 60950-1:2006
Shock and impact resistanceEN 60068-2-27:1995
Vibration resistanceEN 60068-2-6:2008
Ambient conditions
Ambient temperature-25 ... 70 °C (-13 ... 158 °F)
Note derating
Storage temperature-40 ... 85 °C (-40 ... 185 °F)
Shock and impact resistance30g/6 ms
20g/11 ms
Vibration resistanceSine 2 - 17.8 Hz: ± 1.6 mm
Sine 17.8 ... 500 Hz : 2 g
Pollution degree2
Mechanical specifications
Degree of protectionIP20
Protection class1 (IEC 60536); Protective conductor connection necessary
ConnectionConnection terminals, max. conductor cross-section
Flexible cable: 0.5 … 4 mm2
Rigid cable: 0.5 … 6 mm2
Stripping length 7 mm
Massapprox. 500 g
MountingDIN mounting rail

Documents: VAN-24DC-K28

Instruction leafletsLanguageFile TypeFile Size
Instruction leaflet / Beipackzettel ALLPDF269 KB

Approvals+Certificates: VAN-24DC-K28

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-4816PDF264 KB
US CA ULE223176LINK---
Worldwide AS-International Association AS-Interface95101PDF382 KB

Associated Products: VAN-24DC-K28

AS-Interface Power supply and network checking utilityfa

Function: VAN-24DC-K28

The VAN-24DC-K28 DC/DC transducer was designed for field bus applications, which transmit both energy and data via a two-wire cable
(AS-Interface design). It powers a fully loaded AS-Interface system with a maximum output current of 30.55 V and 4 A.

In this case, the DC/DC transducer provides the energy, decouples data of the power source and balances the two output cables
(AS-Interface + and AS-Interface -) in relation to ground (screen connection).

The precise and transformer coupling permits the use of unshielded load lines.

The PELV output circuit is electronically protected against overload and continuous short circuit.


The DC/DC transducer is electronically protected against continuous short circuit. In case of a defect, the internal fuse disconnects the DC/DC transducer from the power supply.

AS-Interface Product Range

Get to know our full range of AS-Interface products.