R911295323 (HMS01.1N-W0020-A-07-NNNN)

HMS Axis Inverters

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Bosch Rexroth Indramat HMS Single Axis Inverters HMS01.1N-W0020-A-07-NNNN image

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The Bosch Rexroth R911295323 (HMS01.1N-W0020-A-07-NNNN) is a power section module for drive controllers, supporting asynchronous and synchronous kit spindle, torque, and linear motors. It integrates power terminals A1, A2, A3 for motor connections and utilizes connectors X5 and X6. The module operates with a nominal DC bus voltage of 700 V, a rated maximum output current of 20 A, and an output frequency range from 0 to 1,000 Hz. It features IP20 protection, internal air cooling via an integrated blower, and a touch guard for safety. The component employs Class 1 copper field wiring, supports a short circuit current rating of 42,000 A rms, and maintains full rated operating parameters up to 40°C (derating to 55°C). Weight is specified at 5.27 kg. CSA Certified and UL Listed.

Technical Specifications

Line Code
1

Design Code
1

Power Connections
A1, A2, A3

Max Current Rating
20A

Connectors
X5 and X6

Protection
Touch Guard

Nominal DC Bus Voltage
700VDC

Cooling Method
Internal Air Circulation

Certification
CSA Certified, UL Listed

Wiring Material
Class 1 Copper

Required Connection Cables
IndraDyn and IndraDrive connection cables

Input Control Voltage
24V +/-20%

Max Ambient Temperature (rated data)
40°C

Max Ambient Temperature (derated data)
55°C

Output Frequency Range
0-1,000Hz

Connector X5 use
Motor Connection

Connection Cable Cross-Sectional Area
1-4mm2

Grounding Terminal
Used for equipment grounding

Frequently Asked Questions

What is the intermediate circuit voltage range and how does it impact compatibility with the DC supply?

The inverter supports a DC bus (intermediate circuit) voltage between about 254-750 V, meaning your DC supply unit must stay within that range to avoid undervoltage or overvoltage shut-downs; spikes above the upper limit can stress components and reduce lifespan.

How does the short-circuit current rating of 42,000 A rms affect upstream electrical protection design?

Because the inverter can withstand high short-circuit currents, upstream protection devices (fuses, circuit breakers) must be rated and fast enough to handle fault currents without unnecessary trips yet still protect wiring and connected equipment. Coordination between rating of main supply cables, fuses, and the inverter’s withstand capacity is required to prevent selective tripping and fire risk.

What wiring cross-section and connector sizes are recommended for motor and control connections (connectors X5, X6), and how do they affect performance?

The motor power terminals (via X5) require fairly large copper conductor sizing to carry 20 A (or more for larger HMS models), with proper torque tightening to reduce contact resistance; undersized wiring increases voltage drop and heating. Connector X6 (for motor temperature sensors, holding brake etc.) uses smaller wires, but improper connections here can lead to faulty feedback or safety issues.

How does the absence of an internal power supply (“Not Equipped”) affect system design for control-voltage supply?

Since no internal auxiliary power supply is built-in, you must provide an external clean 24 V source (±20%) for control logic and sensors; any dips or noise on that supply may cause erratic behavior or shutdowns. Proper filtering, backup, and ensuring voltage stability under load are therefore essential.

How do load profile and duty cycle affect how the HMS01.1N model should be selected relative to motors with frequent starts-stops or varying torque?

Motors with frequent starts/stops or high inertia loads produce high peak currents; the drive’s thermal time constant means repeated peaks will accumulate heat, potentially triggering current limiting unless the inverter is oversized. For such duty cycles, either choose a model with higher max/current rating, or ensure cooling and control profiles are set up to limit peak current duration.

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Internal Product Review

The Bosch Rexroth HMS01.1N-W0020-A-07-NNNN is a HMS Axis Inverter with a nominal DC bus voltage of 700 V and a rated maximum current of 20 A. It features internal air cooling with an integrated blower and offers an output frequency range of 0 to 1,000 Hz. This controller is CSA certified, UL listed, and suitable for various industrial applications.