REXRTOH IndraDrive HMV01 series power supply unit

REXRTOH IndraDrive HMV01 Power Unit: Reliable Power Core for Industrial Servo Drive

Product positioning and safety guidelines

The Bosch Rexroth IndraDrive HMV01 series power supply unit is a DC bus power supply device designed specifically for high-performance servo drive systems, and is a key component of the IndraDrive system family. It converts three-phase AC power (380-480V) into stable DC power (DC 435-680V or DC 750V), providing power for downstream HMS/HMD inverter modules. It is widely used in industrial automation fields such as machine tools, packaging, printing, and robots that require high dynamic response and reliability.

Safety is the primary prerequisite. The operating voltage of this product far exceeds the safe extra low voltage (SELV) range, posing a risk of fatal electric shock. Therefore, all installation, operation, and maintenance work must be carried out by qualified personnel. Qualified personnel refer to professional technicians who are familiar with the installation, commissioning, operation, and related hazards of electrical drive systems, and have the qualifications to safely operate electrical circuits (including power-off, grounding, and hanging and locking), and have received first aid training.

Be sure to read all accompanying documents thoroughly before operation. If the device is resold or transferred, the safety manual must be provided in the official language of the country where it is used. Structural modifications to hardware or decompilation of software are strictly prohibited. Only accessories and spare parts approved by Rexroth are allowed to be used.

Detailed explanation of key safety regulations

1. Electrical Contact and Shell Protection

Power off operation: Before touching any component with a voltage higher than 50V, the power must be cut off and ensure that it cannot be reconnected. After a power outage, wait for at least 30 minutes to ensure that the internal capacitors are fully discharged, and then conduct a power test to confirm.

Grounding (protective grounding) requirements: This is of utmost importance for the safe operation of HMV01. The equipment must be permanently and reliably grounded through a grounding terminal before and during operation.

High leakage current warning: The leakage current of HMV01 is greater than 3.5 mA. This means that if the grounding is poor, the casing may carry dangerous voltage.

Minimum cross-sectional area of grounding wire: In order to safely discharge leakage current, the cross-sectional area of grounding wire must meet strict requirements (see Table 1-1). For example, when the cross-sectional area of the phase wire is 2.5 mm ² (14 AWG), if a single grounding wire is used, its minimum cross-sectional area needs to be 10 mm ² (8 AWG); As an alternative, it is allowed to use two grounding wires with a cross-sectional area of 2.5 mm ² each.

2. Battery safety

The device may contain batteries inside. The designated battery type must be used according to the product specifications, and it is prohibited to:

Heating or charging a depleted battery (with the risk of explosion and burns).

Put the battery into the fire or disassemble it.

Abandoned batteries are classified as hazardous waste (with explosion risks during transportation and disposal) and must be disposed of separately in accordance with national regulations. They must not be mixed with ordinary garbage.

3. Expected use and environment

The HMV01 power unit is designed specifically for mechanical equipment in industrial environments and complies with IEC 60204-1 and NFPA 79 standards. It belongs to Class C3 products (conducted and radiated disturbance limits) defined by the IEC 61800-3 standard and is suitable for industrial environments. This means:

Non residential: Not suitable for connecting to public low-voltage power grids that supply power to residential areas, otherwise additional electromagnetic interference suppression measures may be required.

System integration: In order to meet the C3 EMC requirements, appropriate interference suppression measures (such as power filters and shielding) must be taken in the drive system.

Technical specifications and model analysis

The HMV01 series is mainly divided into two sub series: HMV01.1E (standard DC bus voltage) and HMV01.1R (high DC bus voltage).

1. HMV01.1E series (output DC 435... 680V)

It includes three power models: - W0030, - W0075, and - W0120.

Input: 3-phase AC 380-480V, 50/60Hz.

Output current: from 69A (W0030) to 276A (W0120).

Control voltage: DC 24V ± 5%, supplying power to the internal control circuit.

Key dimensions: The height is uniformly 440mm, the depth is 262mm, and the width increases with power (150mm, 250mm, 350mm).

Installation spacing: At least 300mm of air duct should be left at the top, 130mm at the bottom, and can be installed side by side in the horizontal direction (with a spacing of 0mm).

Protection: Use UL listed J-class (600V AC) fuses for branch circuit protection, with rated values corresponding to 80A, 150A, and 250A. Its short-circuit current rating (SCCR) is as high as 42000 Aeff.

2. HMV01.1R series (output DC 750V)

It includes four models: - W0018, - W0045, - W0065, and - W0120.