VFD vs Servo Drive: Key Differences
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
The Siemens 6AU1435-2AD00-0AA0 is a SIMOTION D435-2 DP/PN drive-based motion controller with STANDARD performance, supporting up to 32 axes in a multi-axis system. It integrates 12 digital inputs, 16 configurable digital I/Os, 6 DRIVE-CLiQ ports, 2 PROFIBUS and 1 PROFINET interface (3 onboard ports), and drives up to 6 servo axes via an integrated SINAMICS S120 CU320-2 base.
The DP/PN designation reflects the built-in PROFIBUS DP and PROFINET interfaces, letting the controller act as fieldbus master on both networks without an add-on module. Its STANDARD performance class caps the system at 32 axes and a 0.25 ms minimum servo/interpolator cycle, below the axis count available on this family's higher-performance variant. Choose the integrated servo control mode (6 axes max) when precision matters most, vector mode (also 6 axes) for induction-motor torque control, or V/f mode (12 axes) for simpler speed-controlled loads that don't need full closed-loop dynamics. With 6 DRIVE-CLiQ ports, it drives SINAMICS S120 CU320-2-based axes directly without a separate motion controller in the loop.
| product brand name | SIMOTION |
|---|---|
| product type designation | D435-2 DP/PN |
| Performance class for motion control system | STANDARD Performance |
| Version of the motion control system | Multiple-axis system |
| number of axes / maximum | 32 |
|---|---|
| Minimum PROFIBUS cycle clock | 1 ms |
| Minimum PROFINET send cycle clock | 0.25 ms |
| Minimum interpolator cycle clock | 0.25 ms |
| Minimum servo cycle clock | 0.25 ms |
| note | 0.25 ms for SERVO or SERVO-FAST |
| Maximum number of axes for integrated drive control: servo | 6 |
|---|---|
| Maximum number of axes for integrated drive control: vector | 6 |
| Maximum number of axes for integrated drive control: V/f | 12 |
| Maximum number of axes for integrated drive control: note | Alternative control modes; drive control based on SINAMICS S120 CU320-2, firmware version V4.x/V5.x |
| Part number | 6AU1435-2AD00-0AA0 |
|---|---|
| Type designation | D435-2 DP/PN |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| RAM (work memory) | 109 Mbyte |
|---|---|
| Additional RAM work memory for Java applications | 20 Mbyte |
| RAM disk (load memory) | 50 Mbyte |
| Retentive memory | 364 kbyte |
| Persistent memory (user data on CF) | 1.5 Gbyte |
| Interfaces: DRIVE-CLiQ | 6 |
|---|---|
| Interfaces: USB | 2 |
| Interfaces: Industrial Ethernet | 2 |
| Interfaces: PROFIBUS | 2 |
| Interfaces: note | Equidistant and isochronous; Can be configured as master or slave |
| Interfaces: PROFINET | 1 |
| Fan | Double fan/battery module included in scope of delivery |
|---|---|
| DC supply voltage: rated value | 24 V |
| DC supply voltage: minimum | 20.4 V |
| DC supply voltage: maximum | 28.8 V |
| consumed current / typical | 1 000 mA |
| note | with no load on inputs/outputs, no 24 V supply via DRIVE-CLiQ and PROFIBUS interface |
| Making current, typ. | 5 A |
| Power loss, typ. | 24 W |
| Ambient temperature, during: long-term storage | -25 ... +55 °C |
| Ambient temperature, during: transport | -40 ... +70 °C |
| Ambient temperature, during: operation | 0 ... 55 °C |
| Ambient temperature, during: note | Maximum installation altitude 4000 m (13124 ft) above sea level. Above an altitude of 2000 m (6562 ft), the maximum ambient temperature decreases by 7 °C (12.6 °F) per 1000 m (3281 ft). |
| Relative humidity: during operation | 5 ... 95 % |
| Relative humidity: without condensation, tested acc. to IEC 60068-2-38 | Wert fehlt |
| Product property / Conformal coating | No |
| Resistance: to biologically active substances, / conformity acc. to EN 60721-3-3 | No |
| Resistance: to chemically active substances, / conformity acc. to EN 60721-3-3 | No |
| Air pressure | 620 ... 1 060 hPa |
| Degree of protection | IP20 / UL open type |
| height | 380 mm |
| width | 50 mm |
| depth | 270 mm |
| Depth / Note | When the spacer is removed 230 mm (9.05 in) deep |
| number of digital inputs | 12 |
|---|---|
| DC input voltage: rated value | 24 V |
| DC input voltage: for signal "1" | 15 ... 30 V |
| DC input voltage: for signal "0" | -3 ... +5 V |
| Electrical isolation | Yes |
| note | Yes, in groups of 6 |
| Current consumption for "1" signal level, typ. | 9 mA |
| Input delay time for: signal "0" → "1", typ. | 50 µs |
| Input delay time for: signal "1" → "0", typ. | 150 µs |
| Number of digital I/Os | 16 |
|---|---|
| Parameterization possibility of the digital I/Os | can be parameterized - as DI - as DO - as probe input (max. 16) - as cam output (max. 8) |
| DC input voltage: rated value | 24 V |
|---|---|
| DC input voltage: for signal "1" | 15 ... 30 V |
| DC input voltage: for signal "0" | -3 ... +5 V |
| Electrical isolation | No |
| Current consumption for "1" signal level, typ. | 9 mA |
| Input delay time for: signal "0" → "1", typ. | 5 µs |
| Input delay time for: signal "1" → "0", typ. | 50 µs |
| Measuring input / reproducibility | 5 µs |
| Measuring input / resolution | 1 µs |
| If used as an output / header Load voltage: rated value | 24 V |
| If used as an output / header Load voltage: minimum | 20.4 V |
| If used as an output / header Load voltage: maximum | 28.8 V |
| Current carrying capacity for each output, max. | 500 mA |
| Leakage current, max. | 2 mA |
| Output delay for: signal "0" → "1", typ. | 150 µs |
| Output delay for: signal "0" → "1", max. | 400 µs |
| Output delay for: signal "1" → "0", typ. | 75 µs |
| Output delay for: signal "1" → "0", max. | 150 µs |
| Output delay for: note | Data for Vcc = 24 V; load 48 Ohm; "1" = 90 % VOut, "0" = 10 % VOut |
| Cam output: reproducibility | 10 µs |
| Cam output: resolution | 1 µs |
| Switching frequency of the outputs for: resistive load, max. | 4 kHz |
| Switching frequency of the outputs for: inductive load, max. | 2 Hz |
| Switching frequency of the outputs for: lamp load, max. | 11 Hz |
| Short-circuit protection | Yes |
| Back-up of non-volatile data: of retentive data | unlimited buffer duration |
|---|---|
| Back-up of non-volatile data: of real-time clock, min. | 4 d |
| Back-up of non-volatile data: note | longer buffer duration of the real-time clock using a battery inserted in the double fan/battery module |
| Approvals: USA | cULus |
| Approvals: Canada | cULus |
| Approvals: Australia | RCM (formerly C-Tick) |
| Approvals: Korea | KCC |
| Approvals: Russia, Belarus and Kazakhstan | EAC |
| Shipping weight | 4.2 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | 16 Nov |
| Stock | Critical stock |
Source: manufacturer data · Last verified: 01 Nov 2026
The rated current of D435-2 DP/PN is 1 A.
The rated operational voltage of D435-2 DP/PN is 24 V AC.
The tariff (HS) code on file for D435-2 DP/PN is 85371091.
D435-2 DP/PN ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
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