Danfoss RDM User guide

MAKING MODERN LIVING POSSIBLE
Electrical Installation
Axial Piston Open Circuit
Reverse Displacement Motor (RDM)
powersolutions.danfoss.com
Electrical Installation Reverse Displacement Motor (RDM)
Revision history Table of revisions
Date Changed Rev
January 2015 Fixed back page BB
December 2014 Added 24 V specifications BA
May 2014 First edition; Danfoss layout-DITA CMS AA
2 L1427413 • Rev BCSeptember 2015
Electrical Installation Reverse Displacement Motor (RDM)

Contents

Literature references
Literature references....................................................................................................................................................................... 4
Latest version of technical literature.........................................................................................................................................4
Product overview
Product image................................................................................................................................................................................... 5
Control options model code........................................................................................................................................................ 5
Description/theory of operation.................................................................................................................................................5
Schematic Diagrams........................................................................................................................................................................6
Electrical specifications.................................................................................................................................................................. 6
Electrical installation
Pinout....................................................................................................................................................................................................7
Pin compatibility...............................................................................................................................................................................7
Mating connector.............................................................................................................................................................................7
L1427413 • Rev BCSeptember 2015 3
Electrical Installation Reverse Displacement Motor (RDM)

Literature references

Literature references

References
Literature ID number Title Description
L1424445 Reverse Displacement Motor (RDM)
Technical Information

Latest version of technical literature

Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/
Complete product electrical and mechanical specifications
4 L1427413 • Rev BCSeptember 2015
A B C1 C2 D E1 E2 E3 F G H1 J K1 K2
L
M N
P200139
Electrical Installation

Product overview

Product image

Control options model code

Reverse Displacement Motor (RDM)
RDM model code
E3 Optional Features
Code Description
1 12 V Integrated Shift Valve 2 24 V Integrated Shift Valve

Description/theory of operation

Reverse Displacement Motors are designed to operate in two positions: maximum forward and maximum reverse displacement. The motors are spring biased to maximum forward displacement and hydraulically shifted to reverse.
Reverse Displacement Motors have an integrated shifting valve to go from forward to reverse rotation. The shifting valve is a proportional pressure reducing valve using system pressure to pilot the servo
piston. The RDM control has a fail safe design. It has an internal orifice to damp the shifting between maximum
forward to maximum reverse and back. This feature protects the system components against fatal damage in case the control signal changes without ramping or ir it gets lost immediately while reversing.
L1427413 • Rev BCSeptember 2015 5
P108731
Pressure port A (CW rotation)
Pressure port B (CCW rotation)
Cartridge
A
B
L1
reverse
RDM
Cartridge
A
B
L1
reverse
RDM
Electrical Installation Reverse Displacement Motor (RDM)
Product overview
Control current
Supply Voltage (Vdc) Current Range 0-100% [mA]
12 0-1500 24 0-750

Schematic Diagrams

Electrical specifications

Description Voltage
12Vdc 24Vdc
Maximum current 1500mA 750mA Nominal coil resistance 5.3 Ohms 21.2 Ohms PWM range 70-200 Hz or straight 12Vdc PWM frequency recommended 100 Hz Connector Deutsch connector DT04-2P IP rating IP 65 Ambient temperature limit 80° C (175° F)
6 L1427413 • Rev BCSeptember 2015
1 2
P003 480
Electrical Installation Reverse Displacement Motor (RDM)

Electrical installation

Pinout

Pin location
Pinout
Pin Description
1 PWM signal 2 Ground
Alternative pinout
Pin Description
1 Ground 2 PWM signal

Pin compatibility

Mating connector

PLUS+1® module pin type
Pin Function
1, 2 PWMOUT/DOUT/PVG Power supply 1, 2 PWMOUT/DOUT/PVGOUT 1, 2 Power ground -
Parts list
Description Quantity Ordering number
Connector 1 Deutsch® DT06-2S Secondary wedge lock 1 W2S Socket terminal 2 046220116141 Mating connector kit 1 Danfoss: K29657
L1427413 • Rev BCSeptember 2015 7
Danfoss Power Solutions GmbH & Co. OHG
Krokamp 35 D-24539 Neumünster, Germany Phone: +49 4321 871 0
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Nordborgvej 81 DK-6430 Nordborg, Denmark Phone: +45 7488 2222
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2800 East 13th Street Ames, IA 50010, USA Phone: +1 515 239 6000
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Building #22, No. 1000 Jin Hai Rd Jin Qiao, Pudong New District Shanghai, China 201206 Phone: +86 21 3418 5200
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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 applications expertise, we work closely with our customers to ensure exceptional performance for a broad range of off-highway vehicles.
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