SIEMENS 6SE7038-6WK84-1BH0 – High-Power Vector Control Drive Controller | SIMOVERT MASTERDRIVES
Engineering Background
The SIEMENS 6SE7038-6WK84-1BH0 is a high-power AC variable frequency drive (VFD) from the SIMOVERT MASTERDRIVES Vector Control (VC) platform — Siemens’ flagship drive series engineered for demanding industrial motion control applications. Designed for continuous heavy-duty operation, this unit delivers precise torque and speed regulation across a wide dynamic range, making it the preferred choice for process-critical machinery in steel, paper, mining, and marine industries.
Product Positioning
This drive controller targets procurement engineers and system integrators who require a proven, high-reliability solution for large-motor applications (315 kW–500 kW range). The 6SE7038-6WK84-1BH0 combines closed-loop vector control with robust hardware architecture, offering a direct replacement or upgrade path for legacy SIMOVERT MC and MASTERDRIVES MC installations.
Complete Technical Specifications
| Part Number / SKU | 6SE7038-6WK84-1BH0 |
| Brand / Manufacturer | SIEMENS AG |
| Product Series | SIMOVERT MASTERDRIVES Vector Control (VC) |
| Control Mode | Vector Control (Field-Oriented Control) |
| Drive Type | AC Variable Frequency Drive (VFD) / Frequency Inverter |
| Power Rating | High-power class (315–500 kW range, 3-phase) |
| Input Voltage | 3-phase AC, 380–480 V (±10%) |
| Output Frequency | 0–300 Hz |
| Cooling Method | Forced air cooling (integrated fan) |
| Protection Class | IP20 (cabinet installation) |
| Communication Interface | PROFIBUS DP (via CBP2 option board), USS protocol |
| Control Board | CU (Control Unit) with integrated technology functions |
| Braking | Dynamic braking / regenerative braking capable |
| Standards Compliance | CE, UL, cUL, EN 61800-3 |
| Weight (approx.) | ~60 kg |
| Country of Origin | Germany |
Proven Application Environments
- Steel & Rolling Mills – Precise torque control for rolling stands and coilers requiring fast dynamic response
- Paper & Pulp Machinery – Tension-controlled winding/unwinding with master-follower synchronization
- Mining Hoists & Conveyors – High-torque low-speed operation with regenerative energy recovery
- Marine Propulsion & Thrusters – Robust performance in harsh, vibration-intensive environments
- Compressors & Large Pumps – Energy-efficient variable-speed control for process optimization
- Test Benches & Dynamometers – Four-quadrant operation for load simulation
Engineering Advantages
- True Field-Oriented Vector Control – Delivers ±0.01% speed accuracy and fast torque response (<5 ms) without encoder in sensorless mode
- Modular Hardware Architecture – Separate power and control sections allow independent replacement, reducing downtime and spare-parts cost
- Integrated Safety Functions – Safe Torque Off (STO) and Safe Stop 1 (SS1) compliant with IEC 62061 / EN 13849
- Wide Bus Compatibility – Native PROFIBUS DP support enables seamless integration into SIMATIC S7 / TIA Portal environments
- Proven Long-Term Reliability – MTBF >100,000 hours; field-proven in 24/7 continuous industrial operations worldwide
- Parameterization via DriveMonitor / STARTER – Full parameter access, diagnostics, and trace functions via Siemens engineering tools
System Architecture & Signal Flow
The 6SE7038-6WK84-1BH0 follows the standard SIMOVERT MASTERDRIVES modular topology:
- Rectifier Unit (AFE/Diode) → DC Link Bus → Inverter Unit (this module) → Motor
- Control signals routed via PROFIBUS DP or analog/digital I/O terminals on the CU board
- Encoder feedback (HTL/TTL/SSI/Resolver) supported via optional SMC encoder evaluation module
- Setpoint cascade: PLC (SIMATIC S7) → PROFIBUS → Drive CU → PWM modulator → IGBT power stage → Motor shaft
- Fault/status signals available via relay outputs and PROFIBUS process data words (PZD)
Sourcing & Quality Verification
- Source: Authorized industrial surplus, OEM decommission, and certified refurbished channels
- Inspection Protocol: Visual inspection → Power-on functional test → Parameter read-back → Insulation resistance check → Load test (where applicable)
- Warranty: 90-day operational warranty covering manufacturing defects and functional failures
- Traceability: Serial number and firmware version documented; original Siemens rating plate intact
- Packaging: Anti-static foam, moisture barrier bag, double-wall carton with shock indicators
Procurement Process
- Inquiry – Submit your RFQ via email to support@konmask.com or WhatsApp +0086 19859288691
- Quotation – Receive itemized quote with lead time, warranty terms, and shipping options within 24 hours
- Order Confirmation – Purchase order accepted; payment via T/T, PayPal, or trade assurance
- Quality Check & Dispatch – Pre-shipment inspection report issued; tracking number provided within 2 business days
- Delivery – DHL / FedEx Express (3–7 days) or sea freight for bulk orders; customs documentation included
- After-Sales Support – Technical commissioning assistance available via remote session
Technical FAQ
Q: Is the 6SE7038-6WK84-1BH0 compatible with SIMATIC S7-300/400 via PROFIBUS?
A: Yes. With the CBP2 communication board installed, the drive integrates natively into SIMATIC S7-300/400 and S7-1500 systems via PROFIBUS DP using standard GSD files.
Q: Can this drive operate in sensorless vector control mode?
A: Yes. The MASTERDRIVES VC platform supports both encoder-based (closed-loop) and sensorless (open-loop) vector control. Sensorless mode achieves ±0.5% speed accuracy suitable for most process applications.
Q: What is the difference between 6SE7038-6WK84-1BH0 and 6SE7038-6WK84-1AA0?
A: The suffix codes indicate different option board configurations and firmware variants. The -1BH0 variant includes specific technology option boards. Contact us to confirm exact configuration for your application.
Q: Is a replacement CU (Control Unit) board available separately?
A: Yes. Siemens CU boards for MASTERDRIVES VC are available as spare parts. We can supply matched CU boards with pre-loaded parameters upon request.
Q: What commissioning software is required?
A: Siemens STARTER (v5.x) or DriveMonitor software is used for parameterization. TIA Portal Drive Lib is supported for newer integration environments.
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