Leuze electronic MSI-SR-LC21DT03 Series Original Operating Instructions page 5

Proper Use
The devices are safety switching devices. They must only be used as components of safety equipment on machines intended to pro-
tect persons, material and plant.
Note
The Performance Level (PL) and safety category in accordance with EN ISO 13849-1 depends on the external wiring, the
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application case, the choice of control station and how this is physically arranged on the machine.
The user must carry out a risk assessment in accordance with ISO 14121-1.
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The entire system/machine must undergo validation in accordance with the applicable standards on the basis of this.
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In order for the specified Performance Level (PL) to be achieved, an average annual number of switching cycles must not be
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exceeded (see EN ISO 13849-1, C.2.4 and Tab. K.1), taking into account the prevailing device load (see EN ISO 13849-1, Tab.
C.1) and the application case. Assuming that the
number of 400,000 / 0.1 x 30 = 133,333 switching cycles/year.
Operating the device not within the specifications may lead to malfunctions or the destruction of the device.
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Operate the RESET button not longer than 3 s. The indicated times must be observed when the device is operated, otherwise the
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device could lock. Locking can be cancelled by opening the safety inputs properly.
MSI-SR-CM expansion devices or external contactors with positively driven contacts can be used to duplicate the enabling current
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paths.
Control outputs S11/S13 is exclusively for connecting control devices as defined in the operating instructions and not for
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connecting external consumers such as lamps, relays or contactors.
Close the E-Stop circuit before operate the RESET button.
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If sensors with reed contacts or semiconductor outputs used pay attention to the peak current (see technical data section control
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circuits).
The safety-related parameters are only valid if the relay is switched at least one a year.
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If an error occurs, the time function of the 37/38 path works in a time saving fashion and can go to zero.
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Leuze electronic GmbH + Co. KG
info@leuze.de • www.leuze.com
B
value for the maximum load is 400,000, this results in a maximum cycle
10d
In der Braike 1 D-73277 Owen
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01/2018 - 50134621-01 - 5/23