11112037 Danfoss PVHC 12V Electro-Hydraulic Actuator

Product Overview

The Danfoss 11112037 is a 12 V PVHC electro-hydraulic actuator designed for main-spool control in PVG32 and PVG100 proportional valve systems.

According to Danfoss official documentation, PVHC uses two current-controlled proportional pressure-reducing valves to convert an electrical command into hydraulic pilot pressure. This hydraulic pressure then moves the PVG main spool proportionally to the electrical control signal.

The verified 11112037 configuration includes:

• 12 VDC supply
• High-current PWM control
• 2 × 2 AMP JPT connector
• IP66 protection
• 30 W coil power
• PVHC32 interface
• PVG32 / PVG100 application

The current Danfoss PowerSource listing identifies 11112037 as:

PVHC32-ACTUATOR-2x2AMP-12V-20BAR-180DEG

with model code:

SVSELEC223AH000BBB99020100007706030000000E00090.

11112037 should not be confused with a complete PVG32 valve group or a PVE electronic actuator. Danfoss states that PVHC does not use the internal closed-loop control technology of PVE and does not provide active or passive fault monitoring. PVHC is intended for hydraulic main-spool actuation with approximately 25 bar pilot pressure.

Technical Specifications

Identification

• Manufacturer: Danfoss
• Part Number: 11112037
• Product Family: PVHC
• Product Type: Electro-Hydraulic Actuator
• Application: PVG32 / PVG100
• Function: PVG main spool control
• Model Code: SVSELEC223AH000BBB99020100007706030000000E00090

Electrical Specifications

• Supply Voltage: 12 VDC
• Current Input: 0–1500 mA
• Coil Resistance: 4.75 Ω ±5%
• Coil Power: 30 W
• Control Signal: High Current PWM
• PWM Frequency: 100–400 Hz
• Recommended Dither Frequency: 250 Hz
• Recommended Dither Amplitude: 40 mA

Hydraulic Specifications

• Pilot Oil Pressure Range: 20–25 bar [290–362 psi]
• Nominal Pilot Pressure: 25 bar [363 psi]
• Minimum Pilot Pressure: 21 bar [305 psi]
• Main-Spool Pressure Control Range: 5–15 bar [72.5–217.5 psi]
• Pilot Pressure at Neutral: 5.0 bar
• Pilot Pressure at Full Stroke: 15.0 bar

Dynamic Performance

• General Response Time: 150–200 ms
• On-Stroke Response: 225 ms
• De-Stroke Response: 90 ms
• Nominal A Stroke: 7 mm
• Nominal B Stroke: 7 mm

Interface and Environmental Data

• Connector: 2 × 2 AMP JPT
• Connector Direction: 180° outward
• Valve-Side Interface: PVHC32 O-ring
• Protection Class: IP66
• Ambient Temperature: -30°C to +80°C
• Medium Temperature: -20°C to +80°C
• Recommended Oil Viscosity: 12–75 mm²/s
• Permitted Oil Viscosity: 4–460 mm²/s
• Fluid Cleanliness: 23/19/16 ISO 4406

Additional Data

• Certification: ISO 13849 compliant
• Displacement: Not applicable
• Maximum Rotational Speed: Not applicable
• Independent Weight: Not published in the verified Danfoss sources reviewed
• Independent Peak Pressure: No reliable individual actuator peak-pressure value identified; the PowerSource “Maximum System Pressure Peaks” field should not be interpreted as a conventional 65-bar actuator pressure rating.

Key Technical Advantages

Electro-Hydraulic Main-Spool Actuation

The PVHC architecture converts electrical current into hydraulic pilot pressure through two proportional pressure-reducing valves. The resulting hydraulic pressure moves the PVG main spool, allowing proportional hydraulic control without directly applying electromagnetic force to the spool.

High-Current PWM Control

The 11112037 accepts a 0–1500 mA current input and operates with a 100–400 Hz PWM control range. Danfoss recommends a 250 Hz dither frequency with 40 mA amplitude for the documented configuration.

Defined Dynamic Response

The official documentation specifies a general response time of 150–200 ms, while the current product configuration specifies 225 ms on-stroke and 90 ms de-stroke response. These characteristics should be considered when tuning the electronic controller.

12 V Mobile-Hydraulic Compatibility

11112037 is specifically configured for 12 VDC electrical systems and uses an AMP JPT connector. Danfoss offers other PVHC variants for 24 V and different connector configurations, but these should not be substituted solely on physical appearance.

IP66 Protection

The documented configuration provides IP66 protection, making it suitable for the environmental exposure commonly encountered in mobile off-highway hydraulic equipment.

Modular PVG Integration

PVHC is an actuator module within the PVG architecture rather than a standalone directional valve. Its modular construction allows the control element to be serviced or replaced while retaining the underlying PVG hydraulic architecture.

Engineering Replacement Capability

For aftermarket replacement, the critical matching factors are:

Part Number + 12 VDC + AMP Connector + PVHC Interface + Pilot Pressure + Hydraulic Main Spool

Replacement units can be matched against these parameters and subjected to 100% simulated working-condition testing before shipment.

Application Areas

Typical applications include:

• Excavators
• Wheel loaders
• Agricultural machinery
• Forestry equipment
• Cranes
• Material-handling machinery
• Road construction equipment
• Mobile hydraulic platforms
• Cylinder control systems
• Hydraulic motor control systems
• Off-highway vehicles

Danfoss officially specifies PVHC for PVG32 and PVG100 proportional valve systems.

Expert Maintenance Tips

Do Not Mix PVHC and PVE Architectures

Danfoss specifies that PVHC must be used with approximately 25 bar pilot pressure and hydraulic-actuated main spools. The manufacturer also states that PVHC cannot be combined with PVE in the same PVG32 or PVG100 valve stack because of their different pilot-pressure and actuation architectures.

Verify 12 V Supply

For the 11112037 configuration:

• Supply: 12 VDC
• Current range: 0–1500 mA
• PWM: 100–400 Hz

The controller output should be checked before commissioning.

Check Pilot Pressure

Maintain the PVHC pilot pressure within the documented 20–25 bar range, with 25 bar nominal. Incorrect pilot pressure can prevent the main spool from achieving the intended stroke or alter the expected hydraulic response.

Control Hydraulic Contamination

Maintain the hydraulic system at 23/19/16 ISO 4406 cleanliness or better according to the documented requirement. Special attention should be paid to preventing particles from entering the proportional pressure-reducing valves and main-spool pilot circuit.

Verify Spool Compatibility

PVHC must be paired with the appropriate hydraulic main spool configuration. Do not assume that a physically compatible PVG spool is automatically compatible with every PVHC installation.

Conduct Functional Testing

After installation, verify:

• 12 VDC supply
• Current command
• PWM frequency
• Pilot pressure
• Neutral spool position
• A/B spool stroke
• On-stroke response
• De-stroke response
• Hydraulic leakage

For replacement components, 100% simulated working-condition testing provides an additional layer of verification before the unit is installed in the machine.