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ifm
Programming Manual ecomatController/60-1 (CR711S) Operating System V2.5.0.n
2017-12-19
System description
Hardware description
>
5.1.6
Feedback in case of externally supplied outputs
23874
Do not apply any external voltage to the outputs!
>
As soon as output group switch
VBBn_SW_Q
= FALSE:
The internal device monitoring checks the voltage on the contact bar after the output group switch.
If then a voltage of > 0.4 VBBn is measured:
• the controller reports error class C,
• the controller switches the group to the safe state.
Safe state of the group = all outputs are switched off
• all outputs will be switched off
• the controller reports the error to the IEC application
To reboot the device:
► remove the error cause
► do a power-on reset.
OR error handling in the IEC application:
► remove the error cause
► Remove error of the group via
xResetError
Figure: Example of wiring with blocking diodes due to the
risk of feedback
Remedy:
Insert the blocking diodes V1 and V2
(
→ green arrows)!
Successful:
If
VBBn_SW_Q
= FALSE, the controller does not
go to error class C when the S1 contact is
closed.
NOTE
Help for externally connected outputs
► Decouple the externally connected outputs by means of diodes so that no external voltage can
be connected to the output terminal of the controller!