Pepperl+Fuchs VAA-2E2A-KE1P-S/E2 User manual

SAFETY AT WORK
VAA-2E2A-KE1-S/E2,
VAA-2E2A-KE1P-S/E2
Original Operating Instructions
FACTOR AUTOMATION
MANUAL

With regard to the supply of products, the current issue of the following document is ap-
plicable: The General Terms of Delivery for Products and Services of the lectrical Indus-
try, published by the Central Association of the lectrical Industry (Zentralverband
lektrotechnik und lektroindustrie (ZV I) e.V.) in its most recent version as well as the
supplementary clause: " xpanded reservation of proprietorship"
VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
3
1 Introduction................................................................................. 5
1.1 Content of this Document ................................................................... 5
1.2 Manufacturer ........................................................................................ 5
1.3 Target Group, Personnel...................................................................... 5
1.4 Symbols Used ...................................................................................... 6
2 Product Description ................................................................... 7
2.1 Intended Use ........................................................................................ 7
2.1.1 Non-Secure Outputs .......................................................................... 7
2.2 AS-Interface Safety at Work VAA-2E2A-KE1-S/E2 and VAA-2E2A-
KE1P-S/E2............................................................................................. 7
2.3 Peripheral Requirements..................................................................... 8
2.4 Connections and Displays .................................................................. 8
2.5 Interfaces and Connections................................................................ 9
2.5.1 AS-Interface, Auxiliary nergy ........................................................... 9
2.5.2 Inputs............................................................................................... 10
2.5.3 Outputs ............................................................................................ 10
3 Commissioning......................................................................... 12
3.1 Preparation ......................................................................................... 12
3.2 Configuring the AS-Interface Safety Monitor .................................. 12
3.3 Installation .......................................................................................... 12
3.4 Addressing Modules.......................................................................... 12
3.5 Operational Testing............................................................................ 12
3.6 Operating Mode.................................................................................. 13
3.7 Operation ............................................................................................ 13
4 Maintenance and Repair .......................................................... 14
4.1 Maintenance and Repair.................................................................... 14
5 Technical Data........................................................................... 15

4
VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
6 Appendix A................................................................................ 18
6.1 Application Examples ........................................................................18
6.2 Category 2...........................................................................................18
6.3 Category 3...........................................................................................18
6.4 Category 4...........................................................................................21
7 Appendix B................................................................................ 24
7.1 Summary of the Requirements for Categories
in Accordance with EN 954-1/ISO 13849-1 ......................................24
7.2 Certificates ..........................................................................................25
7.3 Probability of Failure on Demand Calculation .................................25
7.4 Transfer Time of the Safety-Relevant Information...........................25

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Introduction
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1 Introduction
1.1 Content of this Document
This document contains information required to use the product in the relevant phases of the
product life cycle. This may include information on the following:
■ Product identification
■ Delivery, transport, and storage
■ Mounting and installation
■ Commissioning and operation
■ Maintenance and repair
■ Troubleshooting
■ Dismounting
■ Disposal
The documentation comprises the following parts:
■ This document
■ Datasheet
In addition, the documentation may comprise the following parts, if applicable:
■ U-type examination certificate
■ U declaration of conformity
■ Attestation of conformity
■ Certificates
■ Control drawings
■ Instruction manual
■ Other documents
1.2 Manufacturer
1.3 Target Group, Personnel
Responsibility for planning, assembly, commissioning, operation, maintenance, and
dismounting lies with the plant operator.
Only appropriately trained and qualified personnel may carry out mounting, installation,
commissioning, operation, maintenance, and dismounting of the product. The personnel must
have read and understood the instruction manual and the further documentation.
Prior to using the product make yourself familiar with it. Read the document carefully.
Note!
For full information on the product, refer to the further documentation on the Internet at
www.pepperl-fuchs.com.
Pepperl+Fuchs GmbH
Lilienthalstraße 200, 68307 Mannheim, Germany
Internet: www.pepperl-fuchs.com

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Introduction
1.4 Symbols Used
This document contains symbols for the identification of warning messages and of informative
messages.
Warning Messages
You will find warning messages, whenever dangers may arise from your actions. It is mandatory
that you observe these warning messages for your personal safety and in order to avoid
property damage.
Depending on the risk level, the warning messages are displayed in descending order as
follows:
Informative Symbols
Action
This symbol indicates a paragraph with instructions. You are prompted to perform an action or
a sequence of actions.
Danger!
This symbol indicates an imminent danger.
Non-observance will result in personal injury or death.
Warning!
This symbol indicates a possible fault or danger.
Non-observance may cause personal injury or serious property damage.
Caution!
This symbol indicates a possible fault.
Non-observance could interrupt the device and any connected systems and plants, or result in
their complete failure.
Note!
This symbol brings important information to your attention.

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Product Description
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2 Product Description
2.1 Intended Use
When used as intended, the AS-Interface safety module allows the operation of sensor-
controlled personal protective equipment up to category 4 and PL e as per ISO 13849 or up to
SIL 3 as per N/I C 61508 and N/I C 62061 in combination with an appropriately
programmed AS-Interface safety monitor. The safety level of the application is determined
either via a risk analysis, e.g., in accordance with N 1050, or is taken from a C standard.
2.1.1 Non-secure outputs
2.2 AS-Interface Safety at Work VAA-2 2A-K 1-S/ 2 and VAA-2 2A-K 1P-
S/ 2
The VAA-2 2A-K 1*-S/ 2 is an AS-Interface safety module with two safety-related inputs and
two outputs. A dual-channel mechanical switch can be connected to the two safety-related
inputs, or a single-channel mechanical switch can be connected to each input. The outputs are
conventional electronic outputs that can have a total load of 1 A (max 0.5 A per output). The
housing is only 22.5 mm wide and 48.5 mm tall and takes up little space in the switch cabinet.
The module is mounted by snapping it onto the 35 mm DIN rail in compliance with N 50022.
An addressing socket is integrated into the module.
The connection is made via plug-in terminals. A four-way (black) terminal block is used for the
inputs. The AS-Interface is connected via a two-way (yellow) terminal block. ach channel has
an L D mounted on the top side of the module to display the current switching status. There is
an L D for monitoring AS-Interface communication and for displaying that the module has the
address 0.
Warning!
The outputs must not be used for safety-related functions.

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Product Description
If single-channel force-guided mechanical switches are connected, the module can be
upgraded to Performance Level c in accordance with N ISO 13849-1 if wired appropriately
and if the switch is selected accordingly. If a dual-channel force-guided mechanical switch is
connected, the module can be upgraded to Performance Level e in accordance with
N ISO 13849-1 if wired appropriately and if the switch is selected accordingly. As per the
approval in accordance with I C 61508 and I C 62061, a Safety Integrity Level of up to SIL 3
can be reached. Both module inputs are occupied. The two channels belonging to the
mechanical switch are monitored for crossed circuits. ach L D displays the voltage of the AS-
Interface and the external power supply.
2.3 Peripheral Requirements
Safety Monitor Requirements
The module must only be used as a safety-related slave in an AS-Interface segment with the
corresponding AS-Interface safety monitor as intended. The AS-Interface safety monitor must
meet the requirements of the "Specification of Safe AS-Interface Transmission" system
specification (version 2.01) dated 05/12/2000.
To evaluate a safety-related function in accordance with a safety standard, all components
found in the function must be evaluated in accordance with this standard.
The wiring and programming of the safety monitor determine whether or not the required safety
function performs correctly. This also applies to the required safety response after a code fault
or failure (see also safety monitor documentation). The safety function (including all safety-
related sensors) must be checked prior to initial commissioning. The safety monitor PL
category or SIL must, as a minimum, comply with the PL category or SIL required by the
application.
Cabling Requirements
The requirements set out in N/I C 60204-1 or similar must always be observed. The
requirements for the external cabling and selection of connected sensors are based both on
the level of functionality to be achieved, and on the required category (ISO 13849-1, N/I C
61508, or N/I C 62061).
Switches or Mechanical Contacts
The switches must be positive opening. Combinations of switches that provide an equivalent
level of safety (fault behavior analysis) can be used.
2.4 Connections and Displays
Figure 2.1
+ +
1
1
2
2
S
FAULT
AUX
PWR
ADDR
OUT
01
AS-i AS-i
0 1 02
AUX AUX
0 2
S
S+1 S-1 S+2 S-2

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Product Description
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Safety related inputs
Outputs
Supply
Displays
2.5 Interfaces and Connections
2.5.1 AS-Interface, Auxiliary energy
In case of the K 1-series all interfaces are connected via removable terminals. Thus also AS-
Interface and auxiliary energy. The cable has to meet the minimum requirements for AS-
Interface (e.g. AS-Interface flat band cable, VAZ-FK-S-Y for AS-Interface and VAZ-FK-S-BK
for auxiliary energy).
Designation Description
S1+ Mechanical switch 1+
S1- Mechanical switch 1-
S2+ Mechanical switch 2+
S2- Mechanical switch 2-
Designation Description
O1 Output 1+
O-1 Output 1-
O2 Output 2+
O-2 Output 2-
Designation Description
ASi+ AS-Interface +
ASi- AS-Interface -
AUX+ Auxiliary power U
Aux
+
AUX- Auxiliary power U
Aux
-
Designation Description
L D FAULT rror display; L D red
red: communication error or address is 0
red flashing: Output supply overload
L D PWR AS-Interface voltage; L D green
L D AUX xt. auxiliary voltage U
AUX
; L D green
L D IN Switching state (input); 2 L D yellow
L D OUT Switching state (output); 2 L D yellow

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Product Description
2.5.2 Inputs
General
The switches are connected to removable terminals. One or more mechanical switches can be
connected in series per channel.
Figure 2.2 = 2 mechanical switches (or one two-channel switch)
= 1 mechanical switch
If only one single-channel switch is to be used, input 1 should be used in this case. If input 2 is
not connected, it must be bridged.
Safety Category
The module contains two independent and redundant input channels that individually meet the
requirements of category 4 in accordance with ISO 13849-1.
Crossed Circuit Monitoring
The inputs are monitored for inter-crossed circuits. The crossed circuit monitoring function is
able to detect low-resistance crossed circuits between the two inputs caused by a metallic
connection.
2.5.3 Outputs
The outputs are designed according to the AS-Interface standard. These are switched to
positive potential (PNP technology).
The outputs can be operated in two modes:
1. The outputs are controlled directly by the corresponding data bits of the AS-Interface mas-
ter.
2. The output signals of the AS-Interface master are linked with the secure inputs. The out-
puts are turned on if the master turns them on or if the inputs are in a secure state.
This operating mode is used to control signal lights that must display the state of the inputs
without the master being involved.
1 2
Short circuit jumper
1
2

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Product Description
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Figure 2.3 Output modes
Modes and logic table of the outputs
The modes are selected by the Master with parameter bit P0:
P0 S1 S2
1)
DO0 DO1
2)
OUT1 OUT2 Mode
1 X X 0 0 0 0 Outputs independend of inputs
X X 1 1 1 1
0 0 0 X X 1 1 Open switch at the input sets
the corresponding output
1 1 0 0 0 0 When the switches are closed
on the input, the master
controls the output
1 1 1 1 1 1
1)
0 = an open switch (secure state).
1 = closed switch.
X = any state that has no effect on the outputs.
2)
1 = outputs are turned on.
0 = outputs are voltage-free.
U
24 V
PELV
AUX
OUT1
S1
AS-Interface+
-
AS-i Chip
≥ 1
P0
DO0

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Commissioning
3 Commissioning
3.1 Preparation
Unpacking the device
1. Check the packaging and contents for damage.
In the event of damage, inform the shipping company and notify the supplier.
2. Check the package contents against your order and the shipping documents for
completeness and accuracy.
Should you have any questions, direct them to Pepperl+Fuchs.
3. Retain the original packaging in case the device is to be stored or shipped again at a later
date.
3.2 Configuring the AS-Interface Safety Monitor
For details of necessary organizational measures affecting configuration of the safety monitor,
please refer to the documentation for the safety monitor.
Safety Classification
The module contains two independent, redundant input channels. If both input channels are
used, the module is suitable for use up to category 4/PL e in accordance with ISO 13849-1, or
SIL 3 in accordance with N/I C 61508 and N/I C 62061. In this case, the monitor must be
programmed so that dual-channel switching is monitored.
If a single-channel switch is used, the module is suitable for use up to category 2/PL c in
accordance with ISO 13849-1, or SIL 1 in accordance with N/I C 61508 and N/I C 62061.
Only tested and certified power supplies with safe isolation may be used to supply power.
These power supplies must have P LV voltage in accordance with N 50295/I C 62026-2,
and a minimum MTBF of 50 years. The power supplies are designed to exclude a short circuit
between the primary and secondary sides.
3.3 Installation
For installation of the module a suitable top hat DIN rail in accordance with DIN 50022 is
recommended.
3.4 Addressing modules
Addressing of the module is performed by means of a manual addressing device or with an AS-
Interface master. If a manual addressing device is used, it should be connected and addressed
to the addressing socket of the module (identified with ADDR) using the addressing cable
included with delivery. Addresses from 1 to 31 can be assigned. The state as supplied is
address 0.
3.5 Operational Testing
Perform function tests as part of the installation by activating the safety function. The
operational test uncovers all existing faults at the time of installation. Because the safe inputs
are monitored for crossed circuits, it is not necessary to test for short circuits in the cabling.
Note!
In the case of single-channel safety functions, test the function for each channel.
For applications of category 4/PL e in accordance with ISO 13849-1 or SIL 3 in accordance
with N/I C 61508 and N/I C 62061, the two inputs must be monitored using the safety
monitor to ensure that they are synchronous.

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Commissioning
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Performing a Function Test
1. Activate the safety function by interrupting the input. This can be done by actuating a con-
nected mechanical switch or on the cable.
2. Check whether the safety monitor detects the interruption without issuing a fault message.
3. Stop the interruption on the input on the connected mechanical switch or on the cable.
4. nable the input on the safety monitor.
3.6 Operating Mode
Activating operating modes for the inputs is not possible.
The parameters in the AS interface may influence the performance of the outputs. The chapter
"Operating principle" contains a more accurate description.
3.7 Operation
Programming the safety monitor parameters defines the safety function of the device. Read the
corresponding documentation.

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Maintenance and Repair
4 Maintenance and Repair
4.1 Maintenance and repair
Regular function tests may be necessary, depending on the safety category.

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Technical Data
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5 Technical Data
Figure 5.1
General Data
Functional Safety Data
Indicators/Operating Elements
Electrical Data
Slave type Safety slave
UL file number 223772
Safety Integrity Level (SIL) SIL 3
Performance Level (PL) PL e
MTTF
d
200 a
PFH
d
0
PFD 0
FAULT L D Fault indication; L D red
Red: communication fault or address is 0
Red, flashing: output voltage overload
PWR L D AS-Interface voltage; green L D
AUX L D xt. auxiliary voltage U
AUX
; green L D
IN L D Switching state (input); 2 yellow L Ds
OUT L D Switch state (output); 2 yellow L Ds
Auxiliary power (output) 20 VDC ... 30 VDC P LV
Rated operating voltage 26.5 V ... 31.6 V from AS-Interface
Rated operating current ≤ 70 mA
Protection class III
Surge protection U
AUX
, U
e
: Overvoltage category II, securely isolated power
supplies (P LV)
99.6
48.5
50.5
22.5

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Technical Data
Input
Output
Programming Instructions
Directive Conformity
Number/type 2 safety-related inputs for mechanical contacts, monitored for
crossed circuits:
2 single-channel contacts: up to category 2/PL c in accordance
with ISO 13849-1 or
1 dual-channel contact: up to category 4/PL e in accordance with
ISO 13849-1
Cable length must not exceed 300 m per input.
Power supply From AS-Interface
Voltage 20 VDC ... 30 VDC, pulsed
Current rating Input current limited ≤ 15 mA,
overload and short-circuit proof
Number/type 2 conventional electronic outputs, PNP
Power supply From external auxiliary voltage U
AUX
Current 0.5 A per output
Voltage ≥ (U
AUX
- 0.5 V)
Profile S-7.B
IO code 7
ID code B
ID1 code F
ID2 code 0
Data bit (function via AS-
Interface)
Input Output
D0 Dyn. security code 1 OUT 1
D1 Dyn. security code 1 OUT 2
D2 Dyn. security code 2 -
D3 Dyn. security code 2 -
Parameter bit (programmable
via AS-Interface)
Function
P0 Output link:
P0 = 1 (default setting): The outputs are controlled via the AS-
Interface.
P0 = 0: The outputs are controlled via the AS-Interface or the
inputs. When the contact of an input is opened, the
corresponding output is activated.
P1 Not used
P2 Not used
P3 Not used
lectromagnetic compatibility
Directive 2014/30/ U N 62026-2:2013 N 61496-1:2004

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Technical Data
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Standard Conformity
Ambient Conditions
Mechanical Data
Insulation coordination N 50178:1998
lectromagnetic
compatibility
N 61000-6-2:2005, N 61000-4-5:2005 1 kV asymmetrical,
criterion B, N 61000-6-4:2007
Degree of protection N 60529:2000
Fieldbus standard N 62026-2:2013
lectrical safety N 50178:1998 I C 60204-1:2007
mitted interference N 61000-6-4:2007
AS-Interface N 62026-2:2013
Functional safety N ISO 13849-1:2015 up to PL e, I C 61508:2010 and
I C 62061:2005/A2:2015 up to SIL 3
Standards NFPA 79:2002
Ambient temperature -25 °C ... 50 °C (-13 °F ... 122 °F)
Storage temperature -25 °C ... 85 °C (-13 °F ... 185 °F)
Relative humidity 85 %, non-condensing
Climatic conditions For indoor use only
Operating altitude ≤ 2000 m ASL
Shock and impact
resistance
10 g, 16 ms in 6 spatial directions, 1000 shocks
Vibration resistance 0.75 mm 10 Hz ... 57 Hz, 5 g 57 Hz ... 150 Hz, 20 cycles
Degree of pollution 2
Degree of protection IP20
Connection Removable terminals, terminal connection ≤ 2.5 mm
2
Material
Housing PA 66-FR
Mass 80 g
Mounting DIN mounting rail
Clamping screw tightening
torque
0.5 Nm ... 0.6 Nm

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Appendix A
6 Appendix A
6.1 Application xamples
6.2 Category 2
The safety function(s) must be tested at appropriate intervals of time by the machine control
system. Loss of the safety function will be detected by the test. The test intervals must be
adjusted to match the application.
Connecting two independent mechanical position switches of Category 2:
Figure 6.1
6.3 Category 3
The occurrence of a fault must not lead to the loss of the safety function.
Connection of two dependent mechanical position switches per channel (two safety functions).
Example 1:
Figure 6.2
Note!
The examples listed here correspond to our understanding of the categories in accordance
with ISO 13849-1 and should not be regarded as binding.
Channel 1
Channel 2
Module
S+1
S-1
S+2
S-2
Channel 1
Channel 2
Module
S+1
S-1
S+2
S-2

VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Appendix A
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Example 2:
If a dangerous failure (short circuit) of the switches cannot be excluded, these switches must
be duplicated and connected in series.
Figure 6.3
Example 3:
If a short circuit in the cabling across the switches cannot be excluded, both channels are
needed to achieve a category 3 safety function.
Figure 6.4
The following function blocks can be parameterized to achieve safety category 3 in this
application during operation of the AS-Interface safety module on a safety monitor (e.g., VAS-
1A-K12 or VAS-2A-K12):
Examples 1 and 2:
Dual-channel, independent
Channel 1
Channel 2
Module
S+1
S-1
S+2
S-2
S+1
S-1
S+2
S-2
Safety circuit
Module
separately
laid
separately
laid

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VAA-2 2A-K 1-S/ 2, VAA-2 2A-K 1P-S/ 2
Appendix A
Example 3:
Dual-channel, dependent
Dual-channel, force-guided
6.4 Category 4
The occurrence of a fault and an accumulation of faults must not lead to the loss of the safety
function.
Example 1:
Connection of a dual-channel mechanical position switch.
To detect a dangerous accumulation of faults, the safety function must be tested. The test
intervals must be adapted to the application.
Figure 6.5
Danger!
The function block "Dual-channel, independent" must not be used in example 3.
Safety circuit
Module
S+1
S-1
S+2
S-2