- Transfers ten signals between a keyed 10-pole system connector and plant terminals
- Provides a bidirectional 1:1 path without galvanic isolation or signal conversion
- Includes documented fuse, diode, and PTC protection components on assigned paths
6DD1681-0AJ1 is the SU12 passive interface assembly for compatible SIMATIC TDC and SIMADYN D signal-cable systems.
It converts the physical connection format from the system cable to accessible spring terminals while retaining the original signal level and direction.
Before replacement, match the article number, system module, SC cable, X1 keying, X2 terminal map, electrical limits, conductor size, and protection-component condition.
Availability, condition, price, and shipping time for 6DD1681-0AJ1 are confirmed during quotation.
Siemens 6DD1681-0AJ1 SIMATIC TDC SU12 Interface Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Transfer ten assigned signals directly between X1 and X2
- Treat every path as non-isolated and without signal conversion
- Observe both SU12 and connected-module voltage/current limits
- Use the documented X2 spring terminals for plant-side conductors
- Preserve terminal numbering and signal direction during rewiring
- Keep the six unused X2 terminals free of unintended connections
- Inspect the documented 0.5 A slow-blow fuse paths
- Verify the BAT46 protective-diode circuit where assigned
- Check the PTC short-circuit protection path before returning signals to service
- Plant-side signal termination for SIMATIC TDC interface wiring
- FM 458-1 DP signal breakout through the documented SC64 cable arrangement
- SIMADYN D or compatible system-module connection to accessible field terminals