Description
Product Introduction
REXROTH HVR03.2-W045N (R911190005) is a 45 kW regulated DC bus power supply in Bosch Rexroth’s DIAX04 HVR series, designed to feed HDS and HDD servo drive controllers in high-performance motion control systems.indramat-usa+1
This unit converts 3-phase 380–480 V AC to a stable 750 V DC bus, supports regenerative braking energy return, and delivers 135 kW peak power for rapid acceleration—making it a core component in legacy DIAX04 machine tool and automation racks.indramat-usa+1
Frequently Asked Questions
Q: Can I hot-swap the HVR03.2-W045N?
A: No. This is a high-power mains-connected unit with large DC bus capacitors. You must power down, verify zero voltage, wait for discharge time, and secure vertical axes before removal. Hot-swapping risks arc flash and DC bus collapse.adegis
Q: Is the HVR03.2-W045N obsolete? Are there direct replacements?
A: Yes, it’s effectively obsolete in new production. The direct replacement is the HVR03.2-W045N-RE02 (R911291727), which shares the same 45 kW rating and 750 V DC bus specs. Verify mechanical envelope and connector pinout before swapping.indramat-usa+1
Q: Will I lose my machine program when replacing this power supply?
A: No. The HVR unit provides DC bus power only; control logic and drive parameters reside in the CNC/PLC and drive controllers (HDS/HDD). However, always back up drive parameters and machine data before any hardware change.manualslib
Q: Are these units factory-new or refurbished?
A: Most available stock is New Surplus (original packaging, never installed) or refurbished/reconditioned with 12-month warranty. True ABB/Rexroth factory-new units are rare. Request serial trace and photos of packaging for audit.ebay+1
Q: What warranty and lead time should I expect?
A: Refurbished units typically carry 12 months warranty; New Surplus may have 6–12 months depending on supplier. Lead times: in-stock units ship in 1–3 days, but export paperwork and customs can add 5–8 working days.
