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Technical Manual
State 03/2025 - Version 1.0
KNX Safety Module
SCN-SAFE.01
Further documents:
Datasheet:
https://www.mdt.de/EN_Downloads_Datasheets.html
Assembly and Operation Instructions:
https://www.mdt.de/EN_Downloads_Instructions.html
Proposed solutions for MDT products:
https://www.mdt.de/en/for-professionals/tips-tricks.html
MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany
Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de
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Summary of Contents for MDT Technologies SCN-SAFE.01
- Page 1 State 03/2025 - Version 1.0 KNX Safety Module SCN-SAFE.01 Further documents: Datasheet: https://www.mdt.de/EN_Downloads_Datasheets.html Assembly and Operation Instructions: https://www.mdt.de/EN_Downloads_Instructions.html Proposed solutions for MDT products: https://www.mdt.de/en/for-professionals/tips-tricks.html MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de...
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Page 2: Table Of Contents
5.2 List of tables ............................25 6 Appendix ............................26 6.1 Statutory requirements .........................26 6.2 Disposal ..............................26 6.3 Assembly ...............................26 6.4 History ..............................26 MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 2 / 26... -
Page 3: Overview
This manual refers to the following devices (Article number in bold) SCN-SAFE.01 KNX Safety Module, 2 SU MDRC ■ MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 3 / 26... -
Page 4: Functions
LED on the device, sent as an alarm object and additionally stored as a plain text message with time stamp in the internal ring memory of the safety module. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de... -
Page 5: Wiring Diagram
KNX Safety Module [SCN-SAFE.01] 2.3 Wiring diagram The following figure shows an exemplary wiring diagram: Figure1: Wiring diagram MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 5 / 26... -
Page 6: Structure And Handling
If the safety mode of the device is active, the programming button on the device must be pressed before the application will transfer. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de... -
Page 7: Communication Objects
■ Device monitoring Status 1 Bit ■ ■ Table 3: Communication objects – Standard settings: Device monitoring MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 7 / 26... - Page 8 C stands for communication, R for read, W for write, T for transmit and U for update. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de...
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Page 9: Ets Parameter
Setting whether and at what interval the (0 = not active) operating hours are sent. Table 7: Settings – General MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 9 / 26... - Page 10 Operating hours since last restart 4 Byte last restart. If “Selection of objects” → “4 Byte”. Table 8: Communication objects – General MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 10 / 26...
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Page 11: Status Output
Important: Date and time must be available. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 11 / 26... -
Page 12: Status Message In Plain Text
Display of the device that caused the alarm. ■ 3. Transmitting – Time (and optionally date) when the alarm occurred. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 12 / 26... -
Page 13: Status Output For Visualisation
“OK” is transmitted via the object “Status output for visualization - Status text” up to the first alarm. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de... -
Page 14: Safety Functions
Defines the password for deactivation. (14 characters permitted) Only if „over 14 Byte Object“ → „active“. [ResetPW] MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 14 / 26... - Page 15 If the Safety mode is deactivated via the object, it will remain inactive for the period set in the “Duration of deactivation” parameter or up to the time it is reactivated via the object. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de...
- Page 16 Status of whether safety mode is active.. Safety mode – Alarm 1 Bit Displaying alarms. Table 12: Communication objects – Safety functions MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 16 / 26...
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Page 17: Device Monitoring
Communication objects Device group 1: Example group |204 Figure4: Identical parameter – Description of group monitoring MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 17 / 26... -
Page 18: Device Monitoring: General Settings
[5 s] KNX bus. If „Objects for disconnecting ...” → „active“. Table 13: Settings – Device monitoring: General MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 18 / 26... - Page 19 Device monitoring Not active → active from now Figure6: Diagram – Device monitoring after locking by lock object MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 19 / 26...
- Page 20 If the fault persists, this switching operation will not be repeated. MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de...
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Page 21: Device 1
“Device 1” has failed. next device Table 16: Communication objects – Monitoring device 1 (... 100) MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 21 / 26... -
Page 22: Monitor Device Via Physical Address (Active Request)
3 ■ group 4 ■ group 5 ■ Table 17: Settings – Monitor device via physical address MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 22 / 26... -
Page 23: Monitor Device Via Group Address (Active Request)
2 Byte 4 Byte next device Table 19: Communication objects – Monitor device via group address (active) MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 23 / 26... -
Page 24: Monitor Device Via Group Address (Passive Receiving)
2 Byte 4 Byte next device Table 21: Communication objects – Monitor device via group address (passive) MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 24 / 26... -
Page 25: Index
Table 20: Settings – Monitor device via group address (passive) ..............24 Table 21: Communication objects – Monitor device via group address (passive)..........24 MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de... -
Page 26: Appendix
Use in the USA and Canada is prohibited! 6.4 History V 1.0 First version of the manual DB V1.0 03/2025 MDT technologies GmbH · Papiermühle 1 · 51766 Engelskirchen · Germany Telephone: +49 (0) 2263 880 · knx@mdt.de · www.mdt.de 26 / 26...
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