SIMOTION Drive-based Control Unit 6AU1435-2AA00-0AA0 6AU1 435-2AA00-0AA0 6AU1435-2AAOO-OAAO

6AU1435-2AA00-0AA0 | SIMOTION D435-2 DP — Drive-Based Motion Controller / Standard Performance / 6 DRIVE-CLiQ / 2 PROFIBUS / 3 Ethernet / Dual Fan + Battery

Motion Controller Inside the Drive — One Housing, No Fieldbus Between Them

The SIMOTION D435-2 DP is a drive-based motion controller — a concept that merges what would otherwise be two separate hardware assemblies into one physical unit. In a conventional servo machine, a standalone motion controller sends axis commands over a fieldbus to separate drive amplifiers. In a SIMOTION D installation, the D435-2 DP occupies the Control Unit slot of a SINAMICS S120 drive chassis. The motion controller and the drive's intelligence share the same enclosure, connected by DRIVE-CLiQ at the servo cycle rate.

DRIVE-CLiQ is the internal servo communication network. At 125µs or 250µs cycle times, the D435-2 DP exchanges position setpoints and actual feedback with Motor Modules, Sensor Modules (for external linear scales and encoders mounted on the machine mechanism), and Terminal Modules (for additional I/O in the drive cabinet) — all without any fieldbus overhead, because the connections are direct hardware within the same system.

This architecture eliminates the latency between a separate motion computer and the drives, reduces cabinet footprint by removing the need for a standalone motion controller, and keeps the entire motion system — motor control, position feedback, and machine logic — in one engineering environment: SIMOTION SCOUT.

Key Specifications

Interface Structure — What Each Port Does

12 fixed digital inputs (24VDC): Read synchronously with the servo cycle — homing switches, registration sensors, safety zone monitors. These signals reach the motion programme within the servo cycle without any fieldbus latency.

16 configurable DI/DO: Each channel independently configured as input or output — drive enable signals, brake controls, machine actuators — under direct motion programme control.

2 PROFIBUS ports: Connect the D435-2 DP to the supervisory controller (typically an S7-series PLC) as a slave, and to PROFIBUS I/O devices as a master — both simultaneously on two independent segments. This is the primary fieldbus for SIMOTION D systems designed before the PROFINET variants (-2AD suffix).

3 Ethernet ports: SIMOTION SCOUT engineering access, HMI panel communication, and IT-level integration via OPC UA server — all over standard 100 Mbit/s Ethernet.

Application Scenarios

Multi-axis packaging machines: Flying cut, cam-based synchronisation, and registration control across 8–20 servo axes. All motion and machine I/O managed from one D435-2 DP unit. PROFIBUS to the supervisory PLC for production data exchange and mode control.

Printing and web processing: Web tension control with encoder feedback through DRIVE-CLiQ Sensor Modules, register correction loops, and coordinated drive timing — all within SIMOTION SCOUT's motion programme environment.

Replacement in installed machines: The D435-2 DP's exact interface configuration (DRIVE-CLiQ count, PROFIBUS ports, Ethernet count, fan/battery hardware) must match the installed unit. Commission from the machine's SIMOTION SCOUT project backup and verify the servo cycle configuration after replacement.

FAQ

Q1: How does D435-2 DP differ from D435-2 DP/PN?

The D435-2 DP (-2AA00) has 2 PROFIBUS ports and Ethernet for engineering/HMI — no PROFINET IO Controller. The D435-2 DP/PN (-2AD00) adds PROFINET IO Controller and IO Device functions, allowing ET 200SP and PROFINET-capable drives as IO devices. Physical dimensions, I/O count, DRIVE-CLiQ, and performance are identical between both variants. For PROFIBUS-based installed systems, the -2AA00 is the correct like-for-like replacement.

Q2: Can SIMOTION D435-2 DP run standard PLC logic alongside motion control?

Yes. The SIMOTION runtime integrates IEC 61131-3 PLC programmes (LAD, FBD, ST) directly alongside motion technology objects in the same task framework. Machine sequencing, I/O control, and HMI communication run on the D435-2 DP without a separate PLC. Both motion and PLC programmes are configured and managed in SIMOTION SCOUT.

Q3: How many servo axes does standard performance support?

At 2ms servo cycle, the D435-2 DP supports 16 to 32 servo axes depending on the motion profile complexity per axis. Simple velocity axes support the higher count; applications with multi-axis interpolation, electronic gearing across many axes, and per-axis cam profile calculation use more processing budget per axis. SIMOTION SCOUT's cycle load indicator confirms headroom during commissioning.

Q4: What programming environment is used?

SIMOTION SCOUT handles hardware configuration (DRIVE-CLiQ topology, axis parameters, PROFIBUS/Ethernet), motion object parameterisation, and application programming in IEC 61131-3 and SIMOTION's graphical MCC (Motion Control Chart) language. SINAMICS S120 Motor Module parameterisation uses STARTER or the Startdrive tool within the SCOUT environment. Engineering communication is via Ethernet from the engineering PC.

Q5: Where is the 6AU1435-2AA00-0AA0 sourced?

Through authorised SIMOTION service channels and the established SIMOTION D aftermarket — specialist drive and motion system dealers and tested surplus suppliers. Confirm the D435-2 DP variant (-2AA00, not -2AD00) and verify firmware version compatibility with the installed machine's SIMOTION SCOUT project before ordering. Battery and fan replacement parts availability should also be confirmed when planning lifecycle maintenance for an installed system.