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1 General
The SS2-00VA000R3 Individual Light Barrier Control Unit is part of a design-approved, contactless safety device in
accordance with EN 61496-1 for electro-sensitive protective equipment (ESPE).
It’s a type 2 safety device in per EN 61496-1.
The ESPE consists of an Individual Light Barrier Control Unit to which as many as four sensors can be connected.
Use of the Individual Light Barrier Control Unit is only permitted with wenglor SL2-00 Light Barriers (see section 13
for order designations). Safety category 2 and Performance Level c is otherwise not assured.
For this reason, use with SL2-00 Light Barriers is described in these operating instructions.
• It is absolutely essential to observe all of the instructions included herein in order to assure safe use of the ESPE.
• Non-observance of the instructions included herein may place the operator of the system into great danger.
1.1 Function and Use for Intended Purpose
The Individual Light Barrier Control Unit monitors the safety field between the light barriers. If the safety field is
penetrated by an object, a switching command is triggered. This switching command may prevent initialization
of a hazardous machine motion, or may stop an action which has already been started.
Use of the Individual Light Barrier Control Unit in combination with SL2-00NE000H2/SL2-00NS000H2 oder
SL2-00TE000H1/SL2-00TS000H2 Light Barriers is only permissible if:
• The hazardous motion can be stopped electrically by the safety output of the Individual Light Barrier Control Unit
• The use of a type 2 safety device is permissible in accordance with the risk analysis
After completion of every new installation or change of the configuration, the entire safety system must be tested for
correct functioning (i.e. Individual Light Barrier Control Unit, Safety Light Barriers and the machine). In particular if the
restart inhibit mode was originally activated, it must be assured that the unit is once again configured for this mode
of operation. In order to check the safety field a testing stick (see section 8) can be used.
1.2 Features
• Safety device per EN 61496-1, type 2
• TÜV certification
• Long working range with SL2-00TS000H2 and SL2-00TE000H1 (transmitter/receiver)
• Easy to use
• Floating safety relay outputs (normally open contacts)
• Either restart inhibit or automatic restart
• Monitoring of external safety relays
• For connection of up to 4 light barriers
• One PNP output for displaying system status
• Periodic self-testing of the connected safety light barriers (every 20 seconds)
• Integrated muting function
• One muting enable input
• One PNP output for connecting a muting indicator
• Muting duration of either 30 seconds or unlimited
• Integrated override function
1.3 Applications Examples
A risk analysis is decisive regarding use of the Individual Light Barrier Control Unit.
Use is conceivable with the following types of machines:
• Palletizers
• Textile machinery
• Transfer and assembly lines
• Automatic insertion equipment
• Packaging machines
• Rotary indexing machines
• Woodworking machines
• Warehouse technology
