Kübler SMC1.3, Руководство по безопасности

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R60047.0002 - Index 2 EN – page 24 / 115
5.8 Relais outputs
The device has two connected-safety-oriented relay outputs. Each relay output consists
of two consecutive contacts (NO). These series contacts are available at [X1 | RELAY
OUT] and
[X2 | RELAY OUT].
•
The contacts are only closed during normal and disturbance-free operation. They
will open to a safety state in case of errors or when the programmed switching
condition occurs.
•
In the de-energized state of the unit the contacts are also open.
•
Switching points and switching conditions can be set by the corresponding
parameters.
•
An internal, forcibly guided opener of the relay is used to monitor the relay status
by the unit itself.
•
In case of an error the contact will change to the open and safe switching state.
Pluggable 2-pole terminal [X1] und [X2]
Internal connection [X1] and [X2]
•
The operator is responsible to ensure a safe state of all relevant
parts and components of the equipment, whenever the relay
contact is open.
•
The target unit must be able to evaluate edges, in order to
determine dynamical conditions of the relay output, too.
•
With frequencies close to the switching point, relay bouncing
may occur in consequence of variation of the frequency
measurement. To prevent this, a hysteresis should be set.
•
If also short overshoots of the switching point should be
detected, a lock function should be set to the output.