Lenze ECS Série Instructions De Montage page 123

Preconditions for external wiring with multiple−contact switches:
Switches S1 and S2 must have at least three contacts:
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At least one NC contact and two NO contacts. All contacts must be
electrically independent and positively driven.
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The contacts must not be bridged.
Switches S1 and S2 must be separated mechanically to avoid
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simultaneous switching after activation.
The NO contacts of S1 and S2 must only close when the NC contacts are
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open. NO and NC contacts must not be activated at the same time.
S1 and S2 must be designed for 24 V DC voltage. If a higher voltage occurs
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in the electrical environment, the switches must have an insulation
voltage. The insulation voltage must at least be as high as the highest
voltage that can occur in case of an error.
Ensure that two channels are available for control category 3:
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Every time the controller is switched off (even in case of a
single−channel switch−off) via the contacts 13/14 of switches S1 and S2,
the brake supply is interrupted and the brake is applied. In addition, the
internal brake relay must be switched off by the application.
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The voltage supply for the output (X6/S24) via the NC contacts 11/12 of
switches S1 and S2 is only switched through in case of a two−channel
controller switch−off. This ensures that the output X6/SO will not be at
HIGH level if a short−circuit occurs in the internal transistor while the
drive is not switched off via both channels.
The switching contacts must resist the maximum current of the 24 V DC
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voltage supply.
All control components (switches, relays, PLC, ...) and the control cabinet
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must meet the requirements of EN ISO 13849. These include for instance:
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Switches, relays in enclosure IP54.
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Control cabinet in enclosure IP54.
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All other requirements can be found in EN ISO 13849.
Wiring with wire end ferrules is essential.
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All safety−relevant cables (e.g. control cable for the safety relay, feedback
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contact) outside the control cabinet must be protected, e.g. in the cable
duct. It must be ensured that short circuits between the individual cables
cannot occur! For further measures, see EN ISO 13849.
EDKCSEX064 DE/EN/FR 4.0
Electrical installation
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Control terminals
Safe torque off
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