Danfoss TACA Series 51-1 Motor Pressured Compensated Controls TA Instruction Manual

Danfoss TACA Series 51-1 Motor Pressured Compensated Controls TA

Specifications

• Model: S51-1 Motor Pressured Compensated Controls TA
• Nomenclature: S51-1 model code 51 R G L F M N JS T W Y PK VZ X M TA
• Description: Pressure compensated control

Product Overview
The S51-1 Motor Pressured Compensated Controls TA is designed to regulate displacement automatically between minimum and maximum levels in response to system pressure. The pressure ramp ensures optimal power utilization across the motor’s displacement range.

Theory of Operation

• The displacement is regulated automatically between minimum and maximum levels based on system pressure. The pressure ramp from regulator start pressure to maximum displacement is controlled to ensure efficient power utilization.
• The pressure compensator configuration includes a shuttle valve to prevent rapid or uncontrolled deceleration during slowing down. It requires a 2-line external signal for operation.

Electrical Installation

The product’s electrical installation involves understanding pin compatibility and pressure compensator logic. Ensure to follow the latest version of technical literature for proper installation.

Pin Compatibility

The product utilizes specific pin configurations for various control options. Refer to the nomenclature on the motor’s nametag to determine if the motor is equipped with the appropriate options.

Pressure Compensator Logic

The pressure compensator logic includes features like hydraulic brake pressure defeat and a shuttle valve to prevent uncontrolled deceleration. Make sure to control the shuttle valve with a 2-line external signal for proper operation.

FAQ

• Q: How do I determine if my motor has the Pressure Compensated Control?
  A: Check the nomenclature on the motor’s nametag. The combination of M and N modules defines the motor control’s functionality.

• Q: What is the purpose of the shuttle valve in the pressure compensator configuration?
  A: The shuttle valve prevents rapid or uncontrolled deceleration when the motor is running in pump mode, ensuring safe operation during vehicle/machine slowdown.

Revision history

Literature references

S51-1 Motor Pressured Compensated Controls TA literature references

S51 and 51-1 Bent Axis Variable Displacement Motors Technical Information| Complete product electrical and mechanical specifications| 520L0440
On/Off Functions Function Block User Manual| Compliant function block set-up information| 11022918

Latest version of technical literature

Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/

Product Overview

Product image

Nomenclature
S51-1 model code

M and N options

DIN Connector
 |  | D2| Electric brake pressure defeat, 24 Vdc, DIN Connector
 |  | D7| Electric brake pressure defeat, 12 Vdc, AMP Connector
 |  | CA| With hydraulic brake pressure defeat
 |  | C2| Without brake pressure defeat

Only certain control options for the S51-1 motor utilize the Pressure Compensated Control. The combination of the M and N modules define the motor control’s functionality. Please refer to the motor’s nomenclature to determine if the motor is equipped with the proper options. The nomenclature can be found on the motor’s nametag.

Theory of operation

TA
Displacement is regulated automatically between minimum displacement and maximum displacement in response to system pressure.

• Regulator start = minimum displacement
• Regulator end = maximum displacement
• Regulator start pressure is adjustable from 110 to 370 bar [1600 to 5370 psi].

Pressure ramp from regulator start pressure (with motor at minimum displacement) until maximum displacement is reached is less than 10 bar [145 psi]. This ensures optimal power utilization throughout the entire displacement range of the motor.

TACA

• Pressure compensator configuration: TACA with hydraulic brake pressure defeat.
• A shuttle valve, ahead of the pressure compensator, prevents operation in the deceleration direction (when the motor is running in pump mode). This is designed to prevent rapid or uncontrolled deceleration while the vehicle/machine is slowing down. The shuttle valve must be controlled by a 2-line external signal.
• Pressure compensator override with brake pressure defeat is mainly used in systems with pumps having electric or hydraulic proportional controls or automotive controls.

TAD1, TAD2, TAD7
Pressure compensator configuration: TAD1, TAD2, and TAD7 with electric brake pressure defeat. A solenoid-switched valve, ahead of the pressure compensator, prevents operation in the deceleration direction (when motor is running in pump mode). This is designed to prevent rapid or uncontrolled deceleration while the vehicle/machine is slowing down. The solenoid valve must be controlled by an external electric signal, based on direction of motor rotation.

Control operation TA

Warning
Unintended vehicle or machine movement hazard. The loss of hydrostatic drive line power, in any mode of operation (forward, neutral, or reverse) may cause the system to lose hydrostatic braking capacity. You must provide a braking system, redundant to the hydrostatic transmission, sufficient to stop and hold the vehicle or machine in the event of hydrostatic drive power loss

Hydraulic schematics
Circuit diagram–motor with pressure compensator control TA**

Ports:

• A, B = Main pressure lines
• L1, L2 = Drain lines
• M3, M4 = Servo pressure
• XA, XB = Control pressure port brake pressure defeat (BPD)
• T3 = Orifice
• N = Speed sensor

Electrical specifications

Electric brake pressure defeats solenoid

Pinout

DIN 43650 connector

Pin location

Pinout

Pinout (alternative)

AMP Junior Power Timer connector

Pin location

Pinout

Pinout (alternative)

Pin compatibility

PLUS+1® module pin type

Pressure compensator logic
Hydraulic brake pressure defeat

Motor rotation| High pressure port| **Control pressure on port *| PCOR function**
---|---|---|---
CW| A| XA| yes
CW| A| XB| no
CCW| B| XA| no
CCW| B| XB| yes

• Differencial control pressure between port XA/XB:
• Δpmin = 0.5 bar [7 psi]
• Δpmax = 50 bar [725 psi]

Electric brake pressure defeat

Motor rotation| High pressure port| Solenoid| PCOR function
---|---|---|---
CW| A| energized| yes
CW| A| non energized| no
CCW| B| energized| no
CCW| B| non energized| yes

Mating connector
DIN 43650 connector parts list

AMP connector parts list

Products we offer:

• Bent Axis Motors
• Closed Circuit Axial Piston Pumps and Motors
• Displays
• Electrohydraulic Power Steering
• Electrohydraulic
• Hydraulic Power Steering
• Integrated Systems
• Joysticks and Control Handles
• Microcontrollers and Software
• Open Circuit Axial Piston Pumps
• Orbital Motors
• PLUS+1® GUIDE
• Proportional Valves
• Sensors
• Steering
• Transit Mixer Drives

Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electronic components. We specialize in providing state-of-the- art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market. Building on our extensive application expertise, we work closely with our customers to ensure exceptional performance for a broad range of off-highway vehicles.
We help OEMs around the world speed up system development, reduce costs and bring vehicles to market faster.
Danfoss – Your Strongest Partner in Mobile Hydraulics.

• Go to www.powersolutions.danfoss.com for further product information.
• Wherever off-highway vehicles are at work, so is Danfoss. We offer expert worldwide support for our customers, ensuring the best possible solutions for outstanding performance. And with an extensive network of Global Service Partners, we also provide comprehensive global service for all of our components.
• Please contact the Danfoss Power Solution representative nearest you.

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Phone : +1 515 239 6000

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Phone : +86 21 3418 5200

Danfoss can accept no responsibility for possible errors in catalogs, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without changes being necessary in specifications already agreed.
All trademarks in this material are the property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved

11024993 Rev BA August 2015 www.danfoss.com

References

• Inverter, Solar Inverter, Home Power Inverter | inverter.com
• Danfoss Power Solutions – Explore our power solutions | Danfoss
• Danfoss Power Solutions – Explore our power solutions | Danfoss
• Danfoss Power Solutions – Explore our power solutions | Danfoss
• Daikin Sauer Danfoss - Home
• Engineering Tomorrow | Danfoss
• Hydro-Gear Drivetrain Solutions | Home
• Danfoss Power Solutions – Explore our power solutions | Danfoss
• Danfoss Power Solutions – Explore our power solutions | Danfoss

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