11
119138-05-10/15 (translation of the original operating instructions)
Operating Instructions
Safety Systems with Locking ESL-IH-AR
EN
8. Electrical connection
The following connection options are available:
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Separate operation
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Series connection with Y-distributors or the passive distribution module AC-DP-…-SA-… from EUCHNER (only with M12
plug connector)
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Series connection, e.g. with wiring in the control cabinet.
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Operation on an AR evaluation unit
WARNING
In case of an error, loss of the safety function through incorrect connection.
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To ensure safety, both safety outputs must always be evaluated.
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Monitoring outputs must not be used as safety outputs.
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Lay the connection cables with protection to prevent the risk of short circuits.
CAUTION
Risk of damage to equipment or malfunctions as a result of incorrect connection.
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Do not use a control system with pulsing or switch off the pulsing function in your control system.
The device generates its own test pulses on the safety outputs. A downstream control system
must tolerate these test pulses, which may have a length of up to 1 ms.
The test pulses are also output when the safety outputs are switched off.
Depending on the inertia of the connected device (control system, relay, etc.), this can lead to
short switching processes.
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The inputs on an evaluation unit connected must be positive-switching, as the two outputs on the
interlocking module deliver a level of +24 V in the switched-on state.
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All the electrical connections must either be isolated from the mains supply by a safety transformer
according to IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent
isolation measures (PELV).
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All electrical outputs must have an adequate protective circuit for inductive loads. The outputs
must be protected with a free-wheeling diode for this purpose. RC interference suppression units
must not be used.
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Power devices which are a powerful source of interference must be installed in a separate location
away from the input and output circuits for signal processing. The cable routing for safety circuits
should be as far away as possible from the cables of the power circuits.
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To avoid EMC interference, the physical environmental and operating conditions at the in-
stallation site of the device must comply with the requirements according to the standard
EN 60204-1:2006, section 4.4.2 (EMC).
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Please pay attention to any interference fields in case of devices such as frequency converters or
induction heating systems. Observe the EMC instructions in the manuals from the respective man-
ufacturer.
Important!
If the device does not appear to function when operating voltage is applied (e.g. green STATE LED
does not flash), the device must be returned unopened to the manufacturer.