HDS03.2-W100N-HS98-01-FW

HDS Drive Controllers

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The HDS03.2-W100N-HS98-01-FW from Bosch Rexroth Indramat features a 100 A rated current and an internal air blower cooling system. Part of the HDS Drive Controllers, it uses a DIAX04 family controller and supports a SERCOS communication interface. It accepts up to three optional plug-in modules and carries function ID code 98.

The base unit integrates command communications and software modules. It runs on line 03 with no alternate versions. Ideal for motion control.

Technical Specifications

Command Communication Interface
SERCOS

Controller Family
DIAX04

Cooling Method
Built-in Internal Air Blower

Line
03

Other Versions
None

Product Type
HDS Drive Controller

Rated Current
100 A

Version
2

Function ID Code
98

Product Group
HDS

Version of Function ID
1

Frequently Asked Questions

What are the continuous current limits at different switching frequencies and why do they matter for motion precision?

The HDS03.2 series delivers about 50 A at 4 kHz and 35 A at 8 kHz continuous current, since increasing switching frequency reduces available current due to switching losses. Using higher frequencies improves motion smoothness and reduces torque ripple, but requires derating of current and heat-management.

How does using the SERCOS interface compare to analog command modules in terms of latency and synchronization?

SERCOS provides deterministic, digital communication with precise timing and synchronization, which improves multi-axis coordination over analog signals subject to drift and noise. For high-speed coordinated moves (robotics, packaging machines), SERCOS reduces jitter and allows tighter coupling among drives.

What are the trade-offs of operating at 8 kHz vs 4 kHz switching for motor heating and overall efficiency?

At 8 kHz, switching losses (in IGBTs or power electronics) increase, which raises internal temperatures and reduces efficiency, limiting continuous current to ~35 A; whereas at 4 kHz the losses are lower, allowing ~50 A. If heat dissipation (cooling, airflow) is constrained, staying at lower switching frequencies can extend reliability.

To what extent does altitude or installation elevation affect performance or cooling of the drive?

The manufacturer’s data indicates installation up to ~1,000 meters above sea level without performance loss; above that, air density drops, reducing cooling efficiency and possibly requiring derating. In high‐altitude installations, ventilation and blower performance must be verified to ensure adequate heat removal.

What is the significance of “Insulation Class C” for wiring, safety, and motor compatibility?

Insulation Class C (as per DIN VDE/IEC) allows higher upper temperature limits for insulation materials (to handle more thermal stress). It means the unit can tolerate higher internal temperatures before insulation breakdown, but wiring and motor insulation should match or exceed this standard for reliable operation.

Common Misspellings

Internal Product Review

The HDS03.2-W100N-HS98-01-FW drive controller from Bosch Rexroth Indramat is designed for industrial automation. It features a 100 A rated current and SERCOS communication interface, offering precise control. This controller is ideal for applications in manufacturing, robotics, and process control, improving operational efficiency in various industries.