PVEH11-32V Actuator 157B4332 157B4512 157B4033 for PVG32

Model Number	157B4033 PVEH11-32V, 157B4512 PVEH12V, 157B4332

Product Description

Product Overview

The PVEH series electro-hydraulic proportional actuators are high-performance members of the Danfoss PVE Series 7 electro-hydraulic actuator family. The PVEH is a high-performance proportional control actuator with closed-loop spool control, primarily used to control work functions with demanding precision and response requirements. Unlike PVEM (medium-performance, 12-step resolution), PVEH offers significantly higher control resolution (250 steps), making it ideal for high-performance applications requiring fine flow regulation.

The PVEH 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. Functionality includes LED-indicated error states with active or passive fault monitoring, plus optional features such as float position (-F), direction indication output (-DI), neutral power-off (-NP), spool position output (-SP), or 0-10V control signal (-U).

This product offers a complete range of 157B series and 11xxxxx series electro-hydraulic actuators—including models 157B4332 (PVEH-F 11-32V) , 157B4512 (PVEH 12V) , and 157B4033 (PVEH 11-32V PASS) —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 fault monitoring under actual operating parameters prior to shipment
High-Performance Closed-Loop Proportional Control: 250-step high resolution for precision flow regulation
11-32V Wide Voltage Range: Compatible with both 12V and 24V mainstream vehicle power systems

Technical Specifications

Valve Family Compatibility

PVG32 / PVG100
Select models compatible with PVG120

Actuator Type

PVEH: High-performance proportional control actuator (closed-loop)

Supply Voltage

11-32 VDC (wide voltage range)
157B4033: 11-32V
157B4332: 11-32V
157B4512: 12V

Control Signal

Analog voltage control signal: 25–75% of supply voltage
Input impedance: 12 kΩ
Input capacitance: 1 nF
Recommended PWM frequency: > 1000 Hz

Pilot Pressure (Standard PVE)

Minimum: 10.0 bar
Nominal: 13.5 bar
Maximum: 15.0 bar

Current Consumption

@ 12V: 540 mA
@ 24V: 270 mA

Hysteresis

4.0%

Resolution

250 steps

Coil Power

Response Time

On-stroke A/B: 120 ms
De-stroke A/B: 120 ms

Max Oil Consumption

Neutral/Locked position: 0 L/min
During actuation: 0.7 L/min

Protection Class

IP65

Operating Temperature Range

-30°C to +90°C (fluid temperature)

Connector Type

1×4 DIN 43650-A / ISO4400 (Hirschmann)
Optional DEUTSCH, AMP

Connector Direction

90° (Up)

Weight

157B4332: 1.50 kg
157B4033: approx. 1.0 kg
PVEH 11-32V: 880 g

Certifications

CE, EAC
ISO13849 compliant

157B Series Model List

157B4332: PVEH-F electro-hydraulic actuator, 11-32V, 1×4 DIN connector
- Type: PVEH-F (with float position function)
- Fault monitoring: Active
- New code: 11166839
- Compatible with: PVG32, PVG100
- Weight: 1.50 kg
- Note: This model is a coil/solenoid valve assembly used with PVEH modules
157B4512: PVEH electro-hydraulic actuator, 12V
- Type: PVEH (high-performance proportional control)
- Series: Series 7
- Fault monitoring: Passive
- Compatible with: PVG32, PVG100
- Superseded by 11166824
157B4033: PVEH electro-hydraulic actuator, 11-32V PASS
- Type: PVEH (high-performance proportional control)
- Series: Series 4
- Fault monitoring: Passive
- Connector: 1×4 DIN 43650-A / ISO4400 (Hirschmann)
- Connector direction: 90° (Up)
- Hysteresis: 4%
- Coil power: 8 W
- Response time: 120 ms
- Length: 106 mm
- New code: 11166824
- Replaces: 157B4073, 157B4082, 157B4083, 157B4084, 157B4085, 157B4086, 157B4088, 157B4512, 157B4524

Key Technical Advantages

1. High-Performance Closed-Loop Proportional Control — 250-Step High Resolution
The PVEH actuator employs a closed-loop control architecture with an embedded LVDT position sensor providing real-time spool position feedback, enabling precise closed-loop regulation through an embedded micro-controller. Compared to PVEM (only 12-step resolution), PVEH offers 250-step high resolution, enabling extremely fine flow regulation particularly suited for applications with stringent control accuracy requirements.

2. 11-32V Wide Voltage Multi-Voltage Power Supply
PVEH actuators support a wide 11-32V DC input voltage range, allowing a single actuator to accommodate both 12V and 24V mainstream vehicle power systems. This design greatly simplifies spare parts management—eliminating the need to distinguish voltage versions when servicing different equipment, significantly reducing inventory costs and selection complexity.

3. Flexible Fault Monitoring Options — Active and Passive Available
The PVEH series offers both Active Fault Monitoring and Passive Fault Monitoring options:

Active (e.g., 157B4332) : Continuously monitors actuator electrical status, immediately transmitting fault signals to the controller upon detecting anomalies
Passive (e.g., 157B4033, 157B4512) : Displays error states via LED indicators, with diagnostic information read by the controller
Both options effectively enhance system safety and maintainability.

4. Multiple Optional Functions and High Flexibility
PVEH actuators support a rich set of optional functional extensions:

Float Position (-F) : Such as 157B4332, supports spool float functionality
Direction Indication Output (-DI) : Real-time output of spool movement direction signal
Neutral Power-Off (-NP) : Automatic return to neutral safe position upon power loss
Spool Position Output (-SP) : Output of actual spool position signal
0-10V Control Signal (-U) : Supports standard industrial control signals

5. Rugged IP65 Protection and Extreme Environmental Tolerance
PVEH actuators feature IP65 protection, effectively resisting dust ingress and low-pressure water jets. The operating fluid temperature range spans -30°C to +90°C, with pilot pressure range of 10-15 bar, ensuring reliable electrical performance and mechanical actuation under extreme cold, high-temperature, and pressure fluctuation conditions.

6. Standardized Interface and Quick Replacement Capability
PVEH actuators feature the 1×4 DIN 43650-A/ISO4400 (Hirschmann) standardized electrical interface (with optional DEUTSCH or AMP interfaces available), combined with unified Danfoss PVE series mechanical mounting dimensions, enabling replacement within minutes without special tools, dramatically reducing equipment downtime.

Application Areas

Mobile Cranes and Knuckle Boom Cranes: High-precision proportional control for boom, telescopic, and slewing functions
Aerial Work Platforms: Smooth proportional regulation and precise positioning of boom movements
Agricultural Machinery: High-performance electro-hydraulic proportional drive for tractor hydraulic hitch systems and combine harvester working mechanisms
Material Handling Equipment: Precise hydraulic system flow distribution for forklifts and reach stackers
Construction Equipment: Fine proportional control for attachment hydraulic tools on excavators and loaders
Marine and Offshore Engineering: Deck cranes, hatch covers, winches, VRCS systems, load-holding cylinders
Industrial Hydraulic Systems: Electronic control drive for high-precision proportional valves on stationary equipment

Expert Maintenance Tips

1. Model Confirmation and Replacement Relationships
The PVEH series has undergone multiple generational changes. Before installation, confirm the replacement relationship for your specific model:

157B4332 has been superseded by new code 11166839
157B4033 has been superseded by new code 11166824
157B4512 has been superseded by 11166824
It is recommended to select the latest code models (11166839 replacing 157B4332; 11166824 replacing 157B4033/157B4512) for long-term supply availability and after-sales support.

2. Electrical Connection Inspection
Prior to installation, verify that the 1×4 DIN connector terminals are intact, free from oxidation or deformation. Ensure the locking mechanism is fully engaged during connection to prevent loosening due to vibration. It is recommended to use protective boots or cable ties around the connector area to secure wiring and prevent terminal damage from cable strain.

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

4. Supply Voltage Verification
Although PVEH actuators support 11-32V wide voltage input, it is still recommended to measure the actual supply voltage with a multimeter before installation. Ensure voltage remains stable within the rated range with ripple not exceeding 5%. 157B4512 is a 12V rated model—verify voltage is within 11-15V range.

5. PWM Signal Requirements
PVEH is a high-performance proportional control actuator requiring PWM (Pulse Width Modulation) control signals. Recommended PWM frequency > 1000 Hz. Signal voltage mapping is as follows:

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)

6. Fault Monitoring Function Verification (Active Models)
157B4332 is an active fault monitoring model. After installation, verify that the fault monitoring function operates correctly: simulate fault conditions such as coil open circuit or signal anomalies to confirm the actuator can properly transmit fault signals to the controller.

7. Spare Parts Strategy
It is recommended to keep 1-2 commonly used actuator models as on-hand spares. Thanks to the modular PVEH actuator design, faulty units can be replaced quickly during short service interruptions, maximizing equipment availability. It is advisable to stock the latest code models (11166839 replacing 157B4332; 11166824 replacing 157B4033/157B4512).

1. PVEH Series

157B4012 PVEH12V
157B4013 PVEH12V
157B4016 PVEH12V
157B4024 PVEH24V
157B4025 PVEH24V
157B4028 PVEH24V
157B4032 PVEH11-32V
157B4033 PVEH11-32V
157B4034 PVEH11-32V
157B4036 PVEH-DI11-32V
157B4054 PVEH-Ex24V
157B4055 PVEH-Ex24V
157B4058 PVEH-Ex24V
157B4063 PVEH-Ex24V
157B4066 PVEH12V
157B4068 PVEH24V
157B4073 PVEH11-32V
157B4082 PVEH12V
157B4083 PVEH12V
157B4084 PVEH24V
157B4085 PVEH24V
157B4086 PVEH12V
157B4088 PVEH24V
157B4312 PVEH12V
157B4313 PVEH12V
157B4316 PVEH12V
157B4324 PVEH24V
157B4325 PVEH24V
157B4328 PVEH24V
157B4332 PVEH11-32V (PVEH with float, replacement for some discontinued PVEM models)
157B4512 PVEH12V
157B4524 PVEH24V

2. PVEM Series

157B4112 PVEM12V
157B4113 PVEM12V
157B4116 PVEM12V
157B4124 PVEM24V
157B4125 PVEM24V
157B4128 PVEM24V
157B4412 PVEM12V
157B4413 PVEM12V
157B4416 PVEM12V
157B4424 PVEM24V
157B4425 PVEM24V
157B4428 PVEM24V
157B4472 PVEM12V (Discontinued. Replace with PVEH with float 157B4332, which offers the same control input)
157B4473 PVEM12V (Discontinued. Replace with PVEH with float 157B4332, which offers the same control input)
157B4476 PVEM12V (Discontinued. Replace with PVEH with float 157B4332, which offers the same control input)
157B4516 PVEM12V
157B4528 PVEM24V
157B4612 PVEM12V
157B4613 PVEM12V
157B4616 PVEM12V
157B4628 PVEM24V
157B4712 PVEM12V (Discontinued. Replace with standard PVEH 157B4032, which offers the same control input)
157B4713 PVEM12V (Discontinued. Replace with standard PVEH 157B4032, which offers the same control input)
157B4716 PVEM12V (Discontinued. Replace with standard PVEH 157B4032, which offers the same control input)
157B4724 PVEM24V
157B4725 PVEM24V
157B4728 PVEM24V