Serviceline Industrial Sensors
Serviceline Explosion Protection

AS-Interface safety module VAA-2E-KE1-S

  • 2 safe inputs for mechanical contacts such as EMERGENCY-STOP switch
  • Housing with removable terminals
  • Communication monitoring
  • Power supply of inputs from the module
  • Function display for bus and inputs
  • Cross-circuit detection
  • Addressing jack

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  VAA-2E-KE1-S

Product Description
KE1 safety module for the control cabinet, 2 Safety-related inputs
General specifications
Slave typeSafety-Slave
AS-Interface specificationV2.1
Required master specification≥ V2.0
UL File NumberE87056
Functional safety related parameters
Safety Integrity Level (SIL)SIL 3 / PL e
MTTFd200 a
Indicators/operating means
LED FAULTerror display; LED red
red: communication error or address is 0
LED PWRAS-Interface voltage; LED green
LED INswitching state (input); 2 LED yellow
Electrical specifications
Rated operating voltage26.5 ... 31.6 V PELV from AS-Interface
Rated operating current≤ 70 mA
Protection classIII
Number/Type2 safety-related inputs for mechanical contacts, cross-circuit monitored: 2 single-channel contacts: up to category 2 / PL c according to EN ISO 13849-1 or 1 two-channel contact: up to category 4 / PL e according to EN ISO 13849-1
Cable length must not exceed 300 m per input.
Supplyfrom AS-Interface
Voltage20 ... 30 V DC pulsed
Current loading capacityinput current limited ≤ 15 mA,
overload and short-circuit resistant
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EUEN 62026-2:2013
Standard conformity
Insulation coordinationEN 50178:1998
Electromagnetic compatibilityEN 61000-6-2, EN 61000-4-5 1 kV asymmetric, criterion B, EN 61000-6-4
Degree of protectionEN 60529:2000
Fieldbus standardEN 62026-2:2013
Electrical safetyEN 50178:1998 IEC 60204-1:2007
Emitted interferenceEN 61000-6-4:2001
AS-InterfaceEN 62026-2:2013
Functional safetyCategory 4 / PL e to EN ISO 13849-1:2015
SIL 3 according to IEC 62061:2015 and IEC 61508 Part 1-7:2010
StandardsNFPA 79:2002
Programming instructions
IO code0
ID codeB
ID1 codeF
ID2 code0
Data bits (function via AS-Interface) input output
D0 dyn. safety code 1 -
D1 dyn. safety code 1 -
D2 dyn. safety code 2 -
D3 dyn. safety code 2 -
Parameter bits (programmable via AS-i)function
P0not used
P1not used
P2not used
P3not used
Ambient conditions
Ambient temperature-25 ... 50 °C (-13 ... 122 °F)
Storage temperature-25 ... 85 °C (-13 ... 185 °F)
Shock and impact resistance10 g, 16 ms in 6 spatial directions 1000 shocks
Vibration resistance0.75 mm 10 ... 57 Hz , 5 g 57 ... 150 Hz, 20 cycles
Mechanical specifications
Degree of protectionIP20
Connectionremovable terminals, terminal connection ≤ 2.5 mm2
HousingPA 66-FR
Mass80 g
MountingDIN mounting rail

Documents: VAA-2E-KE1-S

Instruction manualsLanguageFile TypeFile Size
Instruction manualENGPDF850 KB
BetriebsanleitungGERPDF842 KB

Approvals+Certificates: VAA-2E-KE1-S

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-2909APDF162 KB
AS-Interface61701PDF88 KB
EU TUV Functional Safety968/FSP 1813.00/19PDF620 KB
Russia TUV GOST-R101-KC/542PDF90 KB
US TUV Rheinland USA Functional SafetyUS 72060083LINK---

Software: VAA-2E-KE1-S

Software ToolsRelease InfoFile TypeFile Size
SISTEMA Library AS-Interface Safety / SISTEMA-Bibliothek AS-Interface SafetyZIP622 KB

Associated Products: VAA-2E-KE1-S


AS-Interface Handheld with accessoryfa

Adapter cable module/hand-held programming devicefa

Function: VAA-2E-KE1-S

The VAA-2E-KE1-S is an AS-Interface safety module with 2 safety-related inputs. A dual channel mechanical switch or in each case a single channel mechanical switch can be connected to the two inputs.

The housing, only 22.5 mm in width and 48.5 mm in height, takes up little place in the switch cabinet. The module features an integrated addressing jack is mounted by snapping onto the 35 mm DIN rail in accordance with EN 50022. Plug-in terminals are used for connection. A 4-way terminal block (black) is used for the inputs. The AS-Interface is connected via a double terminal block (yellow).

The current switching state of each channel is indicated by an LED, located on the module's top side. Similarly, an LED is provided to monitor the AS-Interface communication and to indicate that the module has the address 0.

When single channel force-directed mechanical switches are connected, up to Category 2 / PL c in accordance with EN ISO 13849-1 can be achieved, given the appropriate wiring and selection of switch.

When a two-channel force-directed mechanical switch is connected, up to Category 4 / PL e in accordance with EN ISO 13849-1 can be achieved, given the appropriate wiring and selection of switch.

As per approval in accordance with IEC 61508 up to SIL 3 can be achieved.

Both inputs of the module are assigned. The two channels of the mechanical switch are monitored for a cross circuit. A LED is also provided to indicate AS-Interface voltage.

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