In the ECAE sample plan you can see examples of used hardware, e.g. key switch, safety door switch etc: https://developer.bosch.com/products-and-services/sdks/nexeed-automation-downloads/ecae#samples/sampleplan Also in the documentation of the add-on you will find some hardware examples (pictures). The SafetyDoorAddon works with digital IO and therefore has no specific hardware requirement. It doesn't matter if the IO come directly from the hardware to the PLC or if they come via a safety control (PNOZmulti, TwinSAFE) into the PLC. But some Bosch plants have specific hardware requirements (e.g. only use Pilz or Euchner or Schmersal switches).
Turning the key after opening doors is not allowed. Before starting bridging the doors of the safety door circuit must be closed. The general sequence:
Common operator access (cleaning, removing parts, etc.):
Press unlock button (or ParImm.Unlock:=TRUE)
Add-on stops operation mode on corresponding ModeHandler
Add-on unlocks doors
Doors are open
Operator closes door
Press lock button (or ParImm.Lock:=TRUE)
Maintenance access with enabling switch (mPad or Euchner ZSM etc.)
ParImm.EnableBridging:=TRUE must be set (e.g. if manual mode is active)
Turn key for bridging
Rest of the sequence is the same like without key, except that you can use the enabling switch to execute movements via manual functions
After doors are locked the key can be removed again (the key may not be turned constantly because only instructed persons are a allowed to use the key/enabling switch).
PS: Please contact Nexeed.Helpdesk@bosch.com if you are interested in an PNOZmulti or TwinSAFE example that suits to the ECAE sample plan.
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