Bosch Rexroth DM 30K 1101-D 670 VDC Servo Amplifier

Description

Key Technical Specifications

Product Introduction & Supply Chain Strategy

The Bosch Rexroth Indramat DM 30K 1101-D is a 50 mm slimline modular servo drive designed for high-density multi-axis control systems. Operating on a regulated 670 VDC bus architecture, it uses an optical SERCOS setpoint interface to receive motion profile commands and control high-precision AC servomotors in CNC machining, printing, and automated assembly equipment.

Because the Indramat DM modular series is obsolete from the OEM, acquiring this drive as New Surplus protects your operations from extended machine outages and costly panel retrofits. Sourcing unused surplus avoids the high failure rates associated with aged, degraded DC-bus capacitors and worn power IGBT stages in second-hand units. Maintaining 1–2 units as on-site insurance stock lowers your Total Cost of Ownership (TCO) by ensuring an immediate plug-and-play swap during unexpected drive shutdowns.

Installation & Configuration Guide

Stage 1: Pre-Installation (Prep & Safety)

1. Perform Lock-Out/Tag-Out (LOTO) on the central supply module powering the 670 VDC bus and the 24 VDC logic rail.
2. Wear a grounded ESD wrist strap before handling the fiber optic SERCOS inputs or internal card connections.
3. Label fiber optic lines (Tx/Rx) and record any drive position addresses configured on the front rotary switches.

Stage 2: Removal

1. Wait at least 5 minutes after disconnecting power for the internal 670 VDC link to discharge below 50 VDC.
2. Disconnect the fiber optic SERCOS connectors, 24 VDC control wire plug, motor power connections, and encoder cable.
3. Unbolt the top and bottom retaining screws securing the 50 mm wide module inside the drive rack and slide it forward out of the chassis.

Stage 3: Installation (Clone & Seat)

1. Inspect the rear DC bus bars and backplane connector pins on the new surplus DM 30K 1101-D for physical damage.
2. Slide the replacement module into the rack slot and torque the top and bottom mounting bolts to secure ground continuity.
3. Reconnect the DC link bus bars, motor power leads, and 24 VDC control plugs.
4. Reattach the fiber optic SERCOS cables, ensuring the minimum cable bend radius (30 mm) is respected.

Stage 4: Power-On & Testing

1. Enable the 24 VDC auxiliary control power first (confirming ~1.0 A current draw).
2. Check the front diagnostic display to confirm initial SERCOS optical loop handshake (Phase 0/1 transition).
3. Energize the central supply unit to charge the 670 VDC bus link.
4. Run a low-speed jog sequence through the master controller to confirm encoder feedback feedback scaling and motor commutation accuracy.

DM 30K 1101-D

DM 30K 1101-D

Firmware/Software Versions & Upgrade Notes

• SERCOS Integration: The DM 30K 1101-D uses a hardwired SERCOS interface for communication. Command parameter files are pushed from the central CNC or motion controller (such as Indramat System 200 or CLM controllers) directly upon SERCOS Phase 2/3 ring initialization.
• PWM Switching Frequency: Factory default switching frequency is set to 8 kHz (yielding 9.7 A_{rms} continuous). If configured via parameter software to 4 kHz, continuous current increases to 14 A_{rms}. Ensure replacement parameters match original motor thermal ratings.
• Direct Replacement: Swapping an existing DM 30K 1101-D with an identical part number requires zero software compilation or firmware flashing; parameters are reloaded automatically over the SERCOS loop during power-up.

Frequently Asked Questions (FAQ)

Is this Bosch Rexroth Indramat DM 30K 1101-D unit brand new or refurbished?

This drive is strictly New Surplus (Original Unused stock). It has never been installed on a machine, used on a production floor, or subjected to board-level refurbishing.

Why should I buy New Surplus instead of a cheaper refurbished DM drive?

Refurbished servo modules from discontinued lines often contain aged electrolytic capacitors and thermal-stressed switching transistors that fail prematurely under full load. A single unexpected failure can cause hours of line shutdown, making New Surplus the reliable, low-risk procurement choice.

Can I replace a DM 30K 1101-D with a different width DM drive module?

No. The DM 30K 1101-D features specific internal current limits (29 A_{rms} peak), a 50 mm module width, and SERCOS interface hardware tailored for its matching motor size. Substituting different module codes alters DC bus bar spacing and current control loop gains.

What encoder types are compatible with this drive?

The DM 30K 1101-D natively supports STG, MTG, and gear encoder feedback signals, digitizing position data at up to 32-bit resolution for high-precision velocity and position loops.

What warranty is included with this New Surplus unit?

All New Surplus Indramat DM 30K 1101-D servo drives come with a comprehensive 1-year functional replacement warranty from the date of purchase.