Siemens 6SE7034-5HK84-1JC2 Drive Module – MASTERDRIVES

Siemens 6SE7034-5HK84-1JC2 — High-Current Vector Control Drive Module for Demanding Industrial Drive Systems

The Siemens 6SE7034-5HK84-1JC2 is a chassis-format AC drive module belonging to the MASTERDRIVES MC/VC product family (6SE70xx series). Rated at a continuous output current of 345 A at a 3-phase AC supply of 380–480 V ±10%, this unit is engineered for high-inertia, high-torque applications where precise speed and torque regulation under variable load conditions is non-negotiable. The module supports both Vector Control (VC) and Motion Control (MC) operating modes, enabling deployment across a broad spectrum of drive topologies — from simple speed-regulated conveyors to closed-loop servo-class positioning systems.

Unlike compact inverter units, the 6SE7034-5HK84-1JC2 operates as a drive module within a shared DC bus architecture. It draws its DC link voltage from a centralized rectifier unit (e.g., 6SE70xx-xEx84-xJxx), which allows multiple drive modules to share regenerative braking energy across the bus — a design that materially reduces energy consumption in multi-axis installations such as crane systems, winding lines, and rolling mills. The DC bus coupling also eliminates the need for individual line reactors per axis, reducing panel volume and harmonic injection into the supply network.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 6SE7034-5HK84-1JC2 is built around Siemens’ IGBT power stack with gate-drive circuitry that enforces dead-time compensation at the firmware level, preventing shoot-through events even during rapid PWM frequency transitions. The IGBT modules are thermally bonded to an aluminum heat spreader with direct forced-air cooling channels, maintaining junction temperatures within safe operating limits at full 345 A continuous load.

The control board employs a dual-processor architecture: a dedicated DSP handles real-time field-oriented control (FOC) calculations at a cycle time of 1.7 ms (speed controller) and 400 µs (current controller), while a secondary microcontroller manages communication, diagnostics, and parameterization tasks. This separation ensures that communication bus load — even under PROFIBUS DP polling at 12 Mbit/s — does not introduce jitter into the torque control loop.

EMC performance is addressed at the hardware level through a multi-layer PCB design with dedicated ground planes, ferrite bead filtering on all signal lines entering the power section, and shielded cable routing between the control board and gate driver boards. The unit meets EN 61800-3 Category C3 conducted and radiated emission limits without external EMC filters when installed per Siemens wiring guidelines. The DC bus capacitor bank is sized to sustain a 10 ms voltage dip at full load without triggering an undervoltage fault — a critical characteristic in facilities with weak grid infrastructure.

The braking chopper interface (external braking resistor connection) is integrated into the DC bus architecture, with the chopper threshold factory-set at 780 V DC and adjustable via parameter P076. This allows fine-tuning of regenerative energy dissipation thresholds to match the mechanical inertia profile of the connected load.

System Integration Benefits

• Deterministic torque response: The 400 µs current control cycle delivers torque step response within ≤2 ms, enabling precise tension control in winding and unwinding applications without mechanical dancer arm oscillation.
• Shared DC bus energy recovery: In multi-axis installations, regenerative energy from decelerating axes is directly consumed by accelerating axes on the same DC bus, reducing net energy draw from the supply by up to 30% in cyclic applications.
• PROFIBUS DP integration: With the CBP2 option board, the drive participates in a PROFIBUS DP network at up to 12 Mbit/s, supporting PROFIdrive profile for standardized speed/torque setpoint exchange with Siemens S7-300, S7-400, and S7-1500 PLCs without custom function blocks.
• Encoder-based closed-loop speed regulation: The SBP encoder board accepts HTL (5–30 V) and TTL (5 V) incremental encoders up to 300 kHz input frequency, enabling speed regulation accuracy of ±0.01% of rated speed — suitable for draw roll and extruder speed synchronization.
• Diagnostic transparency: The drive logs fault events with timestamp, operating hours counter, and pre-fault parameter snapshot (last 8 faults stored in non-volatile memory), enabling root-cause analysis without external data loggers.
• Parameterization via DriveMonitor / STARTER: Full parameter set accessible via USS protocol on the RS485 port or PROFIBUS DP, supporting offline parameter backup and batch commissioning across multiple drives from a single engineering station.
• Modular scalability: The MASTERDRIVES chassis architecture allows the 6SE7034-5HK84-1JC2 to be combined with additional drive modules on a common DC bus without modifying the rectifier unit, provided total load current remains within the rectifier’s rated capacity.
• Thermal derating management: The drive’s internal temperature model continuously calculates IGBT junction temperature based on output current and switching frequency, issuing an advance warning (A0504) before reaching the thermal limit — allowing the control system to reduce load before a protective shutdown occurs.

Quality Assurance & Global Logistics

Every 6SE7034-5HK84-1JC2 unit supplied by siemensplc.com is sourced as genuine Siemens AG manufactured hardware, traceable by serial number to Siemens production records. Units are stored in a climate-controlled warehouse in Xiamen, China, maintained at 18–25°C and ≤60% RH to preserve capacitor formation and PCB integrity during storage.

Pre-shipment inspection covers: label and serial number verification, housing and connector integrity check, and where applicable, a power-on functional test with parameter read-back confirmation. Anti-static packaging with foam cushioning is standard for all drive module shipments. A 12-month warranty against manufacturing defects is provided from the dispatch date, with direct technical support from our engineering team throughout the warranty period.

Logistics from Xiamen port: DHL Express (3–5 business days to Europe/North America), FedEx International Priority, and sea freight consolidation for bulk orders. Export documentation — commercial invoice, packing list, certificate of origin, and HS code 8504.40 declaration — is prepared for every shipment. Customs pre-clearance advisory is available for buyers in the EU, US, and Southeast Asia.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.