Siemens 6RA7087-6FV62-0-Z SIMOREG DC-MASTER DC Converter
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Product Information
The Siemens 6RA7087-6FV62-0-Z (Z=G94+D64+S00+K01+K11) is a microprocessor-controlled SIMOREG DC-MASTER DC converter engineered for dynamic speed and torque regulation of variable-speed DC motor drives. Operating on a 460 V 3-phase AC input supply at a rated current of 705 A, this unit delivers an armature output voltage of 480 V DC at up to 850 A, along with a dedicated 30 A field output. Utilizing a four-quadrant fully regenerative armature topology, the drive provides continuous bidirectional motor control and efficient energy recovery during deceleration in heavy industrial applications such as rolling mills, cranes, paper machinery, and material processing lines.
Integrating a replacement converter into an existing production environment requires verifying physical options and transferring application parameter sets. This model features factory Z-options including option S00 for technological software in the basic unit, option G94 for high-speed PROFIBUS DP fieldbus network communication, as well as K01 adapter modules and a K11 local bus adapter for electronics expansion slots. Operational configuration data is saved within non-volatile EEPROM memory, allowing parameter sets to be uploaded and restored using Siemens DriveMonitor commissioning software or a handheld OP1S operator keypad panel. When replacing a failed unit, parameter extraction from non-volatile memory or donor backups helps ensure identical motor control settings, and technical assistance from ABC Industrial Parts can assist in preparing replacement hardware for immediate commissioning.
System status monitoring and first-line troubleshooting are provided by the front-mounted PMU seven-segment display, which indicates current operating states as well as active fault or warning codes. Detailed diagnostic state history is retained within internal fault memory buffers accessible via parameters r047, r060, and r065 through the OP1S keypad or connected DriveMonitor software. Initial field checks should include confirming three-phase mains supply stability, field excitation wiring, motor armature connections, and PROFIBUS DP network cable integrity. If display indications show persistent internal electronics or power semiconductor failures that cannot be cleared through standard field commissioning steps, board-level repairs or a tested exchange unit from ABC Industrial Parts offer an efficient pathway to restore system operation.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 6RA7087-6FV62-0-Z (Z=G94+D64+S00+K01+K11) |
| Model / Type | SIMOREG DC-MASTER DC Converter |
| Product Family | SIMOREG DC MASTER |
| Series | 6RA70 |
| Component Type | DC Converter |
| Supply Voltage | 460 V AC (3-phase) |
| Rated AC Input Current | 705 A |
| Armature Output Voltage | 480 V DC |
| Armature Output Current | 850 A |
| Field Output Current | 30 A |
| Control Method | 4-Quadrant regenerative drive (B6)A(B6)C |
| Communication Interface | PROFIBUS DP (Option G94) |
| Software Options | Technological software in basic unit (Option S00) |
| Hardware Expansion Options | Slot D/E adapter modules (Option K01), Local BusAdapter LBA (Option K11) |
Programming and Configuration
Parameterization of the Siemens SIMOREG DC-MASTER converter is managed using Siemens DriveMonitor software or directly through an OP1S handheld operator panel connected to the unit. Drive parameters dictate motor ratings, current limits, ramp function generator timing, and closed-loop control dynamics. The integrated option S00 provides additional technological software functions built into the basic unit, allowing customizable control structures and internal block interconnections without requiring separate external controller hardware.
All parameter settings are retained in non-volatile memory to prevent data loss during power outages. When commissioning a replacement drive, software backups can be transmitted directly over the communication interface or loaded via the OP1S panel to clone operational parameters. Ensuring software parameters align with the motor nameplate and mechanical drive train specs prevents control instability and protects mechanical equipment during start-up.
Communication and System Integration
Network integration for the 6RA7087-6FV62-0-Z is established via option G94, which equips the drive with PROFIBUS DP communication capabilities. This interface provides fast cyclic data exchange with higher-level programmable logic controllers (PLCs) and distributed control systems, supporting setpoint distribution, speed feedback, and drive status reporting over standard fieldbus wiring.
Physical board expansion is facilitated by option modules K01 and K11. Option K01 supplies adapter modules for expansion slots D and E, while option K11 incorporates a local bus adapter (LBA) inside the electronics box. These hardware options allow the installation of auxiliary communication, feedback, or I/O option boards, ensuring full compatibility with complex system architectures.
Diagnostics and Status Indication
Diagnostic oversight is available through the integrated PMU seven-segment display located on the converter front panel. The display provides real-time operational status indicators alongside fault (Fxxx) and warning (Uxxx) message codes during active operation or abnormal operating conditions.
For in-depth diagnostic analysis, internal parameter buffers log historic fault details across diagnostic parameters r047, r060, and r065. Connecting Siemens DriveMonitor software or an OP1S operator keypad enables technicians to examine fault codes, timestamp information, and operating parameters recorded at the moment an alarm or trip occurred.
Status LED Indicators
| LED | Color/Status | Meaning |
|---|---|---|
| PMU 7-Segment Display | Numeric / Alphanumeric Display | Displays operational status, operating states (e.g. o7.0), and diagnostic fault or warning codes (Fxxx / Uxxx) |
Replacement and Spare Part Considerations
Replacing a SIMOREG 6RA7087-6FV62-0-Z converter requires matching both the primary power specifications and the specific Z-option suffix code. This unit is rated for a 460 V 3AC input and supplies an 850 A DC armature output with a 30 A field supply. Verifying that the replacement unit carries identical Z-options—specifically G94 for PROFIBUS DP, S00 for technological software, K01 for slot adapters, and K11 for the local bus adapter—is essential to maintain hardware and network interface compatibility.
Because the converter is not plug-and-play out of the box, existing parameter sets must be transferred to the replacement unit prior to restarting production. Restoring parameter backups from DriveMonitor software or copying parameters using an OP1S panel ensures that field excitation limits, motor tuning, and network addresses match the original installation requirements.
Frequently Asked Questions
What is the main supply voltage and output rating for the Siemens 6RA7087-6FV62-0-Z converter?
The drive operates on a 460 V 3-phase AC power input with a rated AC current of 705 A. It delivers a 480 V DC armature output rated at 850 A, alongside a dedicated 30 A field output.
What hardware and software features are included with the Z-options on this model?
This converter includes option S00 (technological software in the basic unit), option G94 (PROFIBUS DP communication capabilities), option K01 (adapter modules for expansion slots D and E), and option K11 (local bus adapter for the electronics box).
How are parameters configured and transferred when replacing this unit?
Configuration parameters can be transferred using Siemens DriveMonitor commissioning software or a handheld OP1S operator panel. Parameter sets stored in non-volatile memory can be backed up from the original drive and uploaded to the replacement converter.
How does the drive indicate operational status and fault conditions?
Status and diagnostic information are shown on the front-panel PMU seven-segment display, which displays operating state codes (e.g., o7.0) as well as warning and fault codes (Fxxx / Uxxx). Diagnostic parameters r047, r060, and r065 store fault buffer logs.
What motor control mode does this SIMOREG DC-MASTER unit support?
The drive utilizes a four-quadrant fully regenerative armature topology, allowing bidirectional motor speed and torque control as well as energy recovery back to the supply system during deceleration.
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