Phoenix Contact IB IL 24 PSDO 8-PAC, User Manual

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IB IL 24 PSDO 8-PAC
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PHOENIX CONTACT 7619_en_05
Cat. 3
– Use proven safety principles.
– Use appropriately qualified actuators (see Section “Requirements for controlled devic-
es/actuators” on page 21).
– Please note that mechanical failure of the switching device can result in the loss of the
safety function.
– Prevent the welding of contacts on the connected contactors or safety relays with ap-
propriate protection against overcurrent and surge voltage.
– All errors (e.g., cross-circuits) that cannot be detected can result in the loss of the safety
function. Take appropriate measures to prevent such errors. Suitable measures in-
clude, for example, protected cable installation or double insulation. Please note the in-
formation in the following tables.
– Please take into consideration errors with a common cause.
– Ensure that a single error does not result in the loss of the safety function.
– Once the test pulses have been disabled, test the shutdown capability of the actuators
at regular intervals.
Cat. 4
– Use proven safety principles.
– Use appropriately qualified actuators (see Section “Requirements for controlled devic-
es/actuators” on page 21).
– Please note that mechanical failure of the switching device can result in the loss of the
safety function.
– Prevent the welding of contacts on the connected contactors or safety relays with ap-
propriate protection against overcurrent and surge voltage.
– An accumulation of errors must not result in the loss of the safety function. Following the
third error, evaluation can be aborted if the probability of further errors occurring is low.
– All errors (e.g., cross-circuits) that cannot be detected can result in the loss of the safety
function. Take appropriate measures to prevent such errors. Suitable measures in-
clude, for example, protected cable installation or double insulation. Please note the in-
formation in the following tables.
– Please take into consideration errors with a common cause.
– Once the test pulses have been disabled, test the shutdown capability of the actuators
at regular intervals.