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VT-VRPA2-537-10/V0/RTP

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Rexroth VT-VRPA2-537-10/V0/RTP material 0811405120 is a 24 VDC analog proportional-amplifier card for directly operated 4WRP 10 series 1X valves.
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Technical specifications for VT-VRPA2-537-10/V0/RTP

  • Manufacturer:
    Rexroth
  • Part Number:
    VT-VRPA2-537-10/V0/RTP
  • Product Family:
    Rexroth
  • Product Type:
    Electrical Proportional Amplifier Card
  • Stock:
    1
  • Card Function:
    Master card
  • Valve Application:
    Directly operated 4WRP 10 series 1X valves
  • Suitable Valve Spool Types:
    4WRP 10 E…1X and 4WRP 10 W…1X
  • Supply Voltage:
    24 VDC
  • Command Input 1:
    0 to ±10 V
  • Command Input 2:
    0 to ±10 V
  • Solenoid Output:
    Up to 3.7 A / 50 VA
  • Rated Current:
    2.5 A
  • Typical Power:
    60 W
  • Ramp Function:
    RTP, two ramp times
  • Connector:
    DIN 41612 F32
  • Device Series:
    1X
  • Ambient Temperature:
    0 to +70 °C
  • Manufacturer Weight:
    349.3 g
  • Weight:
    0.3493 kg
  • Tariff Code:
    8537109090
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Integration Installation & Mounting Maintenance & Safety Application
  • Controls directly operated 4WRP 10 series 1X proportional directional valves
  • Accepts two 0 to ±10 V command inputs from the machine control system
  • Provides a 3.7 A / 50 VA solenoid output with two ramp-time functions

VT-VRPA2-537-10/V0/RTP is the Bosch Rexroth type code for material number 0811405120.

The Eurocard-format master amplifier processes analog command signals and drives the proportional-valve solenoid for the documented 4WRP 10 series 1X application.

Replacement approval must compare the full type code, material number, valve, output current, connector wiring, ramp functions and command-signal polarity.

Availability, condition, price, and shipping time for VT-VRPA2-537-10/V0/RTP / 0811405120 are confirmed during quotation.
  • Verify the 24 VDC supply, common reference and both ±10 V command channels
  • Match the 3.7 A output to the exact 4WRP 10 series 1X valve solenoid
  • Document ramp, deadband and machine-command settings before removing the old card
  • De-energize the rack and valve circuit before inserting or removing the Eurocard
  • Inspect DIN 41612 F32 connector alignment, keying and backplane contacts
  • Seat and secure the card while maintaining the rack's specified cooling clearance
  • Monitor connector condition, output-current behavior and valve response during service
  • Keep the unit within the documented 0 to +70 °C ambient range
  • Do not interchange predecessor or similar VT-VRPA cards without full circuit verification
  • 4WRP 10 proportional directional-valve control
  • Hydraulic axis command and ramp conditioning
  • Legacy analog hydraulic-control retrofit and maintenance
Description
VT-VRPA2-537-10/V0/RTP, material 0811405120, is a Bosch Rexroth analog electrical amplifier for directly operated 4WRP 10 proportional directional valves.

The master card operates from 24 VDC, accepts 0 to ±10 V command inputs and provides a solenoid output up to 3.7 A / 50 VA with two ramp-time functions.

Before replacement, confirm the complete type code, material number, valve series, solenoid current, DIN 41612 F32 connector, card-slot wiring, command polarity and ramp settings.
Alternative Names
VT-VRPA2-537-10/V0/RTP Rexroth VT-VRPA2-537-10/V0/RTP Bosch Rexroth VT-VRPA2-537-10/V0/RTP VT-VRPA 2-537-10/V0/RTP 0811405120 Rexroth 0811405120
Technical notes
Confirm 24 VDC supply, ±10 V command polarity, 4WRP 10 series 1X valve compatibility, 3.7 A output, DIN 41612 F32 backplane wiring and both ramp settings before substitution.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can REXROTH 0811405120 be installed as a direct replacement for the older WV60-RGC2?
Bosch Rexroth documents 0811405120 as the replacement for WV60-RGC2 material R900064050, but the retrofit still requires verification of rack wiring, connector allocation, command polarity, valve compatibility, solenoid current and machine settings before power is applied.
How can a customer confirm that REXROTH VT-VRPA2-537-10/V0/RTP matches the installed hydraulic valve?
Record the complete valve type code and coil data and compare them with the documented 4WRP 10 series 1X application and 3.7 A / 50 VA output. Similar-looking VT-VRPA cards can be configured for different valves and are not automatically interchangeable.
What settings should be documented before removing a working REXROTH 0811405120 card?
Record both ramp settings, command-signal polarity, deadband or zero adjustments, any accessible potentiometer or switch positions, backplane slot and connector orientation. These details reduce commissioning time and prevent unexpected hydraulic motion.
What should be checked if a replacement REXROTH VT-VRPA2 card drives the valve in the wrong direction or at the wrong speed?
Verify command polarity, valve spool type, common reference, both ±10 V inputs, ramp adjustments, solenoid wiring and hydraulic connections. De-energize the machine before correcting wiring because an incorrect command can create uncontrolled movement.
Can a similar-looking Rexroth Eurocard be substituted for material 0811405120?
Do not approve a substitution from appearance or connector style alone. Match the complete material number and type code, valve series, output current, input range, ramp function, device series and backplane pin assignment.
What should a buyer request when purchasing a spare REXROTH 0811405120?
Request clear label and connector photos, condition and test information, confirmation of the complete 0811405120 / VT-VRPA2-537-10/V0/RTP identity and a list of included items. A mating rack, backplane or accessories should not be assumed unless quoted.
What should be investigated if REXROTH 0811405120 receives commands but the valve does not respond?
Check the 24 VDC supply under load, command and common-reference signals, DIN 41612 contacts, output-current path, coil continuity, valve contamination or sticking and hydraulic pressure. Separate an amplifier fault from a valve or hydraulic-system fault before replacing parts.

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