The safety controller and all other safety-related subsystems must be approved for
at least that safety class which is required in the overall system for the respective,
application-related safety function.
The wiring of the safety controller must be suitable for the required safety class, (see
manufacturer documentation).
- if the DC 24 V supply is safely disconneced at the positive poleonly, no test
puises must be applied to this pole in disconnected condition.
if the DC 24 Vsupply is disconnected at both polesthe test pulses must not be
applied at the same time at the plus and minus outputs. In this case,the test pulse
must be applied with a time delay.
- SEW-EURODRIVE recommends to switch off the 24 V supply at two poles.
The values specified for the safety controller must be strictly adhered to when de-
signing the circuit.
"
The switching capacity of the safety relays or the relay outputs of the safety controller
must correspond at least to the maximally permitted, limited output current of the
24 V vol tage supply.
Observe the manufacturer’s instructions concerning the permitled contact loads and
fusing that may berequired for the safety contacts.If the manufacturer provides no
specific information, the contacts must be protected with 0.6 times the nominal value
of the maximum contact rating specified by the manufacturer.
. To ensure protection against unintended restart in accordance with EN 1037the
safe control system must be designed and connecled in such a way that res etting the
contr al device alone does not lead to arestart.Arestart may only be carried out after
a manual reset of the safety circuit.
Requirements on startup
. To validate the implemented safety functions, they must be documented and
checked after successful startup(validation).
Observe the limitations for safety functions in chapter"Limitations" for the validation
of the safety functions. Non-safety-related parts and components that affect the
result of the validation test(e.g. motor brake)must be deacivated, if necessary.
For using MOVITRACMC07B in safety-relevant applications, it is essential that you
perform and record startup checks for the disconnecting device and for properwiring.
3.5 Requirements on operation
Operation is only allowed within the limits specified in the data sheets.This principle
appiles to the extemal safety control as well as toMOvTRACMC 07B and approved
options.
.You must check the safety functions on a regular basis to ensure proper functioning.
The test intervals should be specified in accordance with the risk assessment.
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