Siemens 6SE7031-2GF60-Z G93 Retrofit-Ready VFD for MASTERDRIVES MC Control Systems
The Siemens 6SE7031-2GF60-Z G93 is a high-performance AC drive unit from the SIMOVERT MASTERDRIVES Motion Control (MC) series, designed for demanding servo and vector control applications in industrial automation environments. As legacy MASTERDRIVES MC installations approach end-of-life or require capacity expansion, this unit serves as a proven retrofit solution — enabling engineers to restore full drive functionality without redesigning the control architecture or replacing the entire control cabinet.
This unit operates within the MASTERDRIVES MC platform, which shares a common hardware backbone with the broader SIMOVERT MASTERDRIVES family. The 6SE7031-2GF60-Z base unit is rated for medium-power applications, and the G93 option code designates a specific factory-configured variant — typically associated with enhanced braking capability or extended I/O configuration. Engineers replacing a failed or obsolete drive should verify the option code against the original nameplate before installation to ensure full functional equivalence.
Upgrade Compatibility Table
| Parameter | Details |
|---|---|
| SKU / Model | 6SE7031-2GF60-Z G93 |
| Series | SIMOVERT MASTERDRIVES MC |
| Mounting | Booksize / Chassis — verify rack slot compatibility with existing CU (Control Unit) |
| Communication | PROFIBUS-DP via CBP2 communication board; compatible with SIMATIC S7-300/400 and S7-1500 via DP/PN gateway |
| I/O Interface | Analog and digital I/O via TB30 terminal board; confirm terminal assignment against existing wiring diagram |
| Replacement Path | Direct replacement for same-SKU units; cross-reference with 6SE7032 series for uprated capacity upgrades |
| Commissioning Tool | DriveMonitor or STARTER software via USS/PROFIBUS; parameter set upload from original drive recommended |
| Warranty | 12 Months — covers manufacturing defects, functional failure under rated load conditions |
Retrofit Planning for Existing Automation Systems
Successful retrofit of the 6SE7031-2GF60-Z G93 into an existing MASTERDRIVES MC installation requires a structured pre-commissioning review. Begin by auditing the existing control cabinet layout: confirm that the 6SE70 power section is paired with a compatible CU (Control Unit) — typically a 6SE7090-0XX84-0AB0 or equivalent MC-series CU — and that the backplane bus connector is undamaged and correctly seated.
Power supply capacity is a critical checkpoint. The DC link bus must be sized to support the drive’s rated input current. If the cabinet includes a shared 6SE7031 rectifier/infeed unit, verify that the total connected load across all axis drives does not exceed the infeed’s rated output. In multi-axis configurations, the 6SY7000-0AD87 DC bus capacitor module may need inspection or replacement as part of the retrofit scope.
Terminal wiring should be mapped against the original TB30 terminal board layout. Analog speed references, digital enable signals, fault relay outputs, and motor thermistor inputs must all be re-terminated and verified before energization. If the original installation used a SBP (Sensor Board for Pulse Encoder) such as the 6SE7090-0XX84-2DA0, confirm encoder signal compatibility and cable shielding integrity.
For sites migrating from PROFIBUS-DP to PROFINET, a CBP2 communication board replacement with a CBC10 or integration via a PN/DP coupler may be required. Parameter migration from the legacy drive should be performed using DriveMonitor or STARTER software, with a full parameter backup exported before the old unit is removed. Pay particular attention to P-gain, ramp times, motor data sets, and encoder resolution parameters, as these directly affect closed-loop performance after swap-out.
HMI screens connected via OP1S operator panel or SIMATIC HMI should be reviewed for drive-specific parameter links. If the HMI communicates directly with the drive over USS protocol, verify baud rate and station address settings match the replacement unit’s configuration. In systems using SIMATIC S7-300 or S7-400 PLCs, the GSD file for the drive’s PROFIBUS node should be re-imported if the firmware version has changed.
Downtime Control During System Migration
Minimizing production downtime during a MASTERDRIVES MC drive replacement requires advance preparation. Before the maintenance window opens, complete a full parameter backup of the existing 6SE7031-2GF60-Z G93 using DriveMonitor connected via the RS232 USS interface or PROFIBUS. Store the parameter file (.par) alongside the original wiring diagram and motor data sheet.
During the swap, retain the original TB30 terminal board and CBP2 communication board if they are undamaged — these can be transferred directly to the replacement unit, preserving terminal wiring and PROFIBUS addressing without re-termination. This approach significantly reduces reconnection time and eliminates a common source of commissioning errors.
After mechanical installation, restore the parameter set via DriveMonitor before energizing the motor. Perform a no-load test first: verify that the drive powers up without fault codes, that the PROFIBUS link is established (check LED status on the CBP2), and that the PLC receives the expected process data words. Only then proceed to a loaded test run at reduced speed, monitoring motor current, speed feedback, and torque limits before returning to full production speed.
Maintaining a spare 6SE7031-2GF60-Z G93 unit in local inventory — pre-configured with the site’s parameter set — is the most effective strategy for reducing unplanned downtime to under two hours in future fault scenarios.
Retrofit Support FAQ
Q: Is the 6SE7031-2GF60-Z G93 a direct drop-in replacement for my existing MASTERDRIVES MC unit?
A: Yes, provided the base SKU and G93 option code match the original nameplate. The power rating, frame size, and control interface are identical. Transfer the TB30 and CBP2 boards from the original unit to preserve wiring and PROFIBUS configuration.
Q: Can I use STARTER software to commission this drive, or is DriveMonitor required?
A: Both tools support MASTERDRIVES MC. DriveMonitor is the legacy-preferred tool for this series and provides direct parameter-level access. STARTER can be used for newer firmware versions. Confirm the drive’s firmware revision before selecting your commissioning tool.
Q: What wiring changes are needed if I’m replacing a unit that used an SBP encoder board?
A: No wiring changes are required if the replacement unit is fitted with the same SBP board type. Verify that the encoder cable shield is grounded at the drive end only, and that the encoder supply voltage (5V or 24V) matches the encoder specification.
Q: What does the 12-month warranty cover?
A: The warranty covers manufacturing defects and functional failure under rated operating conditions for 12 months from the date of shipment. Units showing evidence of overvoltage, incorrect wiring, or physical damage are excluded. Pre-shipment functional testing is performed on all units before dispatch.
© 2026 SMARTNEXMSK. All rights reserved.
Original Source: https://smartnexmsk.com
Contact: [email protected] | +86 18259474341
