Need help?Do you have a question about the Danfoss M46 and is the answer not in the manual?
Lists technical literature references with ID, title, and description.
Provides a link to find the most current technical literature online.
Visual representation of the M46 Pump.
Explanation of the M46 model code for control options (HA, HB).
Details M46 pumps' applications, features, and control methods.
Diagram illustrating the M46 pump's hydraulic system circuit.
Diagram showing the electrical schematic for the M46 pump.
Technical data on pump displacement, control current, and solenoid specs.
Details the pinout and location for the pump connector.
Information on PLUS+1 module pin types and their functions.
Illustrates the input/output matrix at EDC/C1 and C2 locations.
Defines pump output flow based on shaft rotation and control signals.
Lists components and ordering numbers for the mating connector.
The Danfoss M46 Pumps HC EDC are designed for medium power applications, capable of handling maximum loads of 345 bar [5000 psi]. These pumps are integral components in hydraulic systems, facilitating the transfer and control of hydraulic power. They offer an infinitely variable speed range, allowing operation from zero to maximum in both forward and reverse modes.
The M46 pumps are compact, high-power density units that utilize a parallel axial piston/slipper concept. This design incorporates a tiltable swashplate to vary the pump's displacement. By reversing the angle of the swashplate, the flow of fluid from the pump is reversed, which in turn reverses the direction of rotation of the motor output. This capability makes them suitable for applications requiring precise and variable control over hydraulic power. The pumps can be combined with other products within a system to create comprehensive hydraulic solutions.
Many M46 pumps include an integral charge pump. This charge pump serves multiple functions: it provides fluid flow for system replenishing and cooling, and it also supplies servo control fluid. This integrated design contributes to the pump's overall efficiency and reliability. The M46 pumps are equipped with a range of auxiliary mounting pads, which allow for the attachment of additional hydraulic pumps. These auxiliary pumps can be used to support complementary hydraulic systems, expanding the functionality and versatility of the M46 unit.
The M46 pumps offer various proportional controls, including manual, hydraulic, or electronic actuation. This flexibility in control options allows for integration into diverse machine architectures and operational preferences. Additionally, an electric three-position control is available, providing another option for precise control over pump operation.
The electrical specifications for the M46 pumps' solenoids are critical for their electronic control. For 12V systems:
For 24V systems:
The recommended PWM Range for optimal control performance is 70-200 Hz, with a preferred PWM Frequency of 100 Hz. The pinout for the electrical connection includes two pins: Pin 1 for PWM signal/voltage input and Pin 2 for Ground. The PLUS+1 module pin type indicates that pins 1 and 2 can function as PWMOUT/DOUT/PVG Power supply, PWMOUT/DOUT/PVGOUT, or Power ground.
The pump output flow direction is controlled by the energization of coils C1 and C2, depending on the shaft rotation (CW or CCW). For example, with CW shaft rotation:
The M46 pumps are designed for versatility and integration. Their ability to provide an infinitely variable speed range in both forward and reverse modes makes them suitable for applications requiring precise motion control. The compact size and high power density allow for efficient use of space in machinery. The availability of various control options (manual, hydraulic, electronic, and electric three-position) ensures adaptability to different system requirements and operator preferences. The auxiliary mounting pads further enhance their utility by allowing for the expansion of hydraulic systems with additional pumps.
While specific maintenance features are not detailed in the provided document, the modular design implied by the auxiliary mounting pads and the availability of mating connectors suggests ease of installation and potential for component replacement. The clear electrical specifications and pinout information are crucial for troubleshooting and ensuring correct electrical connections during installation and maintenance. The "Mating connector kit" (K29657), which includes the Deutsch DT06-2S mating connector, Deutsch W2S wedge lock, and Deutsch 0462-201-16141 socket contacts, simplifies the process of establishing robust and reliable electrical connections, which is a key aspect of maintaining system integrity. Regular checks of coil resistance and current, as outlined in the electrical specifications, can help in diagnosing potential issues with the solenoids.
General| Brand | Danfoss |
|---|---|
| Model | M46 |
| Category | Water Pump |
| Language | English |
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