PVEM24V/12V Actuator 157B4728 157B4628 157B4716 for PVG32

Product Overview

The PVEM series electro-hydraulic proportional actuators are core members of the Danfoss PVE Series 7 actuator family. The PVEM is a medium-performance proportional control actuator featuring a closed-loop control architecture with an embedded LVDT position sensor providing real-time spool position feedback. A micro-controller processes the signal voltage and feedback signal to precisely regulate solenoid valves that drive the main spool. The PVEM offers 12-step proportional resolution, making it a cost-effective solution for work functions with medium performance requirements within PVG proportional valve groups.

The PVEM actuator employs 2-solenoid valve bridge technology with a new patented 3-way logic design, offering a simple and robust structure. Three performance variants are available: standard PVEM, PVEM-R (with ramp function), and PVEM-Q (quick reaction). All proportional PVEM variants feature closed-loop spool control and continuous fault monitoring.

This product offers a complete range of PVEM series electro-hydraulic actuators—including models 157B4728 (PVEM 24V) , 157B4628 (PVEM 24V) , and 157B4716 (PVEM 12V) —as direct drop-in replacement alternatives for original Danfoss PVE actuators. All actuators are manufactured to strict OEM specifications and undergo 100% real-world condition simulated testing, ensuring seamless integration with existing systems without any modification required.

Core Value Proposition:

• Direct Interchangeability: Full dimensional, interface, and electrical compatibility with original Danfoss PVE actuators

• 100% Simulated Condition Testing: Complete validation of response characteristics and functionality under actual operating parameters prior to shipment

• Closed-Loop Proportional Control: 12-step resolution for medium-performance applications

• 11-32V Wide Voltage Range: Compatible with both 12V and 24V mainstream vehicle power systems

Technical Specifications 

Valve Family Compatibility

• PVG32 / PVG100 / PVG120

Actuator Type

• PVEM: Medium-performance proportional control actuator (closed-loop)

Supply Voltage

• 157B4728 (PVEM 24V) : 24 VDC

• 157B4628 (PVEM 24V) : 24 VDC

• 157B4716 (PVEM 12V) : 12 VDC

• Wide voltage range: 11-32 VDC

Voltage Ripple

• Max 5%

Control Signal

• Analog voltage proportional signal (Ratiometric)

• Neutral: Uₛ = 0.5 × U_DC (50% DUT)

• P→A direction: Uₛ = 0.5 to 0.25 × U_DC (50% to 25% DUT)

• P→B direction: Uₛ = 0.5 to 0.75 × U_DC (50% to 75% DUT)

Recommended PWM Frequency

• 200 Hz

Current Consumption

• @ 12V: 690 mA

• @ 24V: 350 mA

Input Impedance

• 12 kΩ

Input Capacitance

• 1 nF

Pilot Pressure (Standard PVE)

• Minimum: 10.0 bar

• Nominal: 13.5 bar

• Maximum: 15.0 bar

Oil Consumption

• Neutral/Locked position: 0 L/min

• Actuating (standard PVEM): 0.5 L/min

Proportional Resolution

• 12 steps

Hysteresis

• 25-35%

Protection Class

• IP66

Operating Temperature Range

• -40°C to +85°C

Connector Type

• 1×4 DIN (Hirschmann)

• Optional AMP, Deutsch

Weight

• Approx. 1.0 kg

Certifications

• CE marked

• ISO13849 compliant

157B Series Model List

• 157B4728: PVEM electro-hydraulic actuator, 24V DC, Series 2/3

  • Type: PVEM (medium-performance proportional control)

  • Compatible with: PVG series proportional valves

  • Connector: 1×4 DIN

  • Weight: approx. 1.0 kg

• 157B4628: PVEM electro-hydraulic actuator, 24V DC, Series 2/3

  • Type: PVEM (medium-performance proportional control)

  • Compatible with: PVG series proportional valves

  • Weight: approx. 1.0 kg

  • New code: 11166853

• 157B4716: PVEM electro-hydraulic actuator, 12V DC, Series 2/3

  • Type: PVEM (medium-performance proportional control)

  • Compatible with: PVG series proportional valves

  • Weight: approx. 1.0 kg

Key Technical Advantages

1. Closed-Loop Proportional Control — 12-Step Medium-Performance Precision Regulation
The PVEM actuator employs a closed-loop control architecture with an embedded LVDT position sensor providing real-time spool position feedback. An embedded micro-controller processes the signal voltage and feedback signal, precisely regulating solenoid valves to drive the main spool. The PVEM offers 12-step proportional resolution, delivering precise linear correspondence between electrical command signals and spool displacement for medium-performance flow regulation applications.

2. 2-Solenoid Valve Bridge Technology — New Patented 3-Way Logic Design
The PVEM actuator employs 2-solenoid valve bridge technology with a new patented 3-way logic design. Energization of one solenoid valve and simultaneous de-energization of the other causes the main spool to move in the corresponding direction; if both solenoids are energized or de-energized simultaneously, the main spool locks in its neutral position. This design ensures reliable control while simplifying the actuator’s internal structure.

3. 11-32V Wide Voltage Multi-Voltage Power Supply
PVEM actuators support an 11-32V DC wide input voltage range, allowing a single actuator to accommodate both 12V and 24V mainstream vehicle power systems. 157B4728 and 157B4628 are 24V versions, while 157B4716 is a 12V version. The wide voltage design greatly simplifies spare parts management and significantly reduces inventory costs and selection complexity.

4. LED Error State Indication with Passive Fault Monitoring
PVEM actuators feature an LED indicator for error state indication and passive fault monitoring. When abnormal operating conditions are detected, the actuator signals faults to operators or control systems via the LED indicator. This design enables rapid problem localization and enhances system maintainability.

5. Three Performance Variants — Flexible Adaptation to Different Application Needs
PVEM is available in three performance variants:

• Standard PVEM: Suitable for常规 medium-performance applications

• PVEM-R (with ramp function) : Provides smooth flow transitions, reducing hydraulic shock

• PVEM-Q (quick reaction) : Delivers faster response for applications with higher dynamic requirements
  6. Rugged IP66 Protection and Extreme Environmental Tolerance
  PVEM actuators feature IP66 protection, effectively resisting dust ingress and high-pressure water jets. The operating temperature range spans -40°C to +85°C, with pilot pressure range of 10-15 bar, ensuring reliable electrical performance and mechanical actuation under extreme cold, high-temperature, and challenging conditions.

7. Multiple Connector Options and Installation Flexibility
The PVEM series offers 1×4 DIN (Hirschmann) standard connectors, with optional AMP or Deutsch connector options available to accommodate different OEM wiring harness standards. Unified Danfoss PVE series mechanical mounting dimensions enable actuator replacement within minutes.

Application Areas

• Mobile Cranes and Knuckle Boom Cranes: Medium-precision proportional control for boom and telescopic functions

• Aerial Work Platforms: Smooth proportional regulation of boom movements

• Agricultural Machinery: Electro-hydraulic proportional drive for tractor hydraulic hitch systems and combine harvester working mechanisms

• Material Handling Equipment: Hydraulic system flow distribution for forklifts and reach stackers

• Construction Equipment: Proportional control for attachment hydraulic tools on excavators and loaders

• Industrial Hydraulic Systems: Electronic control drive for medium-precision proportional valves on stationary equipment

Expert Maintenance Tips

1. Model Confirmation and Code Identification
PVEM actuators feature the 8-digit 157B model code embossed on the back of the plastic housing for rapid on-site identification. Prior to installation, confirm:

• Supply voltage: 157B4728/157B4628 are 24V versions; 157B4716 is a 12V version

• Connector type: Confirm compatibility with system wiring harness (DIN/AMP/Deutsch)

2. Replacement Relationship Confirmation
The PVEM series has undergone code transitions. Before installation, confirm the replacement relationship for your specific model:

• 157B4628 corresponds to new code 11166853

• 157B4728 has cross-replacement relationships with models such as 157B4025
  It is recommended to confirm the latest available code for long-term supply availability and after-sales support.

3. Electrical Connection Inspection
Prior to installation, verify that the connector type matches your system wiring harness. Ensure the locking mechanism is fully engaged during connection to prevent loosening due to vibration. PVEM uses analog voltage proportional signal control (Ratiometric), with control signal voltage at 25-75% of supply voltage.

4. Pilot Pressure Verification
PVEM actuators require a stable pilot oil supply pressure for proper operation. Standard PVE actuators require a pilot pressure range of 10.0-15.0 bar, with a nominal value of 13.5 bar. IMPORTANT: Standard PVE electrical modules CANNOT operate at 25 bar pilot pressure! Verify that system pilot pressure meets actuator specifications before installation.

5. Supply Voltage and PWM Signal Verification

• 157B4728/157B4628 (24V versions): Verify voltage is within 22-30V range

• 157B4716 (12V version): Verify voltage is within 11-15V range

• Recommended PWM frequency > 200 Hz with voltage ripple not exceeding 5%

6. Proportional Resolution and Performance Expectations
PVEM offers 12-step proportional resolution with hysteresis of 25-35%. For applications requiring higher control precision (e.g., high-precision closed-loop control), PVEA or PVEH series actuators are recommended.

7. Contamination Prevention During Replacement
When replacing a PVEM actuator, observe the following precautions:

• Thoroughly clean the area around the actuator before removal

• Immediately seal ports with clean plugs after removal to prevent contaminant entry into the hydraulic system

• Verify O-ring seals are intact before installing the new actuator

• Prevent foreign objects from falling onto the mounting surface during installation

8. Spare Parts Strategy
It is recommended to keep 1-2 commonly used actuator models as on-hand spares. Thanks to the modular PVEM actuator design, faulty units can be replaced quickly during short service interruptions, maximizing equipment availability.

1. PVEM Series

• 157B4728 PVEM24V
• 157B4628 PVEM24V
• 157B4716 PVEM12V
• 157B4112 PVEM12V
• 157B4116 PVEM12V
• 157B4124 PVEM24V
• 157B4128 PVEM24V
• 157B4412 PVEM12V
• 157B4416 PVEM12V
• 157B4424 PVEM24V
• 157B4428 PVEM24V
• 157B4472 PVEM12V (Discontinued – replace with PVEH with float 157B4332)
• 157B4612 PVEM12V
• 157B4616 PVEM12V
• 157B4712 PVEM12V (Discontinued – replace with standard PVEH 157B4032)
• 157B4724 PVEM24V
• 157B4516 PVEM12V
• 157B4528 PVEM24V
• 157B4628 PVEM24V
• 157B4716 PVEM12V
• 157B4728 PVEM24V
• 157B4476 PVEM12V (Discontinued – replace with PVEH with float 157B4332)

2. PVEH Series

• 157B4012 PVEH12V
• 157B4032 PVEH11-32V
• 157B4024 PVEH24V
• 157B4054 PVEH-Ex24V
• 157B4063 PVEH-Ex24V
• 157B4082 PVEH12V
• 157B4033 PVEH11-32V
• 157B4084 PVEH24V
• 157B4312 PVEH12V
• 157B4332 PVEH11-32V
• 157B4324 PVEH24V
• 157B4512 PVEH12V
• 157B4524 PVEH24V
• 157B4013 PVEH12V
• 157B4025 PVEH24V
• 157B4055 PVEH-Ex24V
• 157B4083 PVEH12V
• 157B4085 PVEH24V
• 157B4313 PVEH12V
• 157B4325 PVEH24V
• 157B4016 PVEH12V
• 157B4028 PVEH24V
• 157B4058 PVEH-Ex24V
• 157B4066 PVEH12V
• 157B4073 PVEH11-32V
• 157B4068 PVEH24V
• 157B4086 PVEH12V
• 157B4088 PVEH24V
• 157B4316 PVEH12V
• 157B4328 PVEH24V

3. PVEO Series

• 157B4212 PVEO12V
• 157B4216 PVEO12V
• 157B4224 PVEO24V
• 157B4228 PVEO24V
• 157B4255 PVEO-Ex24V
• 157B4218 PVEO-Ex24V
• 157B4213 PVEO12V
• 157B4225 PVEO24V
• 157B4278 PVEO-Ex24V
• 157B4217 PVEO-R12V
• 157B4227 PVEO24V
• 157B4229 PVEO-R24V
• 157B4266 PVEO12V
• 157B4268 PVEO24V
• 157B4272 PVEO24V
• 157B4296 PVEO12V
• 157B4901 PVEO12V
• 157B4902 PVEO24V
• 157B4903 PVEO-R12V
• 157B4904 PVEO-R24V
• 157B4905 PVEO-DI12V
• 157B4906 PVEO-DI24V

4. PVES Series

• 157B4812 PVES12V
• 157B4832 PVES11-32V
• 157B4824 PVES24V
• 157B4813 PVES12V
• 157B4825 PVES24V
• 157B4816 PVES12V
• 157B4828 PVES24V
• 157B4886 PVES12V
• 157B4833 PVES11-32V
• 157B4888 PVES24V

5. PVEK Series

• 157B4172 PVEK24V
• 157B4911 PVEK12V
• 157B4912 PVEK24V
• 157B4913 PVEK-DI12V
• 157B4914 PVEK-DI24V

6. PVEA Series

• 157B4775 PVEA11-32V
• 157B4734 PVEA11-32V
• 157B4735 PVEA11-32V
• 157B4736 PVEA-DI11-32V
• 157B4737 PVEA-DI11-32V

7. PVEB Series

• 157B4921 PVEB12V
• 157B4922 PVEB24V
• 157B4923 PVEB12V
• 157B4924 PVEB24V
• 157B4925 PVEB12V
• 157B4926 PVEB24V
• 157B4927 PVEB-DI12V
• 157B4928 PVEB-DI24V

8. PVED Series

• 157B4942 PVED-CC12V
• 157B4943 PVED-CC11-32V