Danfoss T1 Electrohydraulic Two Position Controls Owner’s Manual
- May 15, 2024
- Danfoss
Table of Contents
MAKING MODERN LIVING POSSIBLE
Electrical Installation
Series 51 Motor
Electrohydraulic Two-Position
Controls T1, T2
T1 Electrohydraulic Two Position Controls
Revision history
Table of revisions
| Date | Changed | Rev |
|---|---|---|
| August 2015 | Converted to Danfoss layout | BA |
| April 2007 | First edition | AA |
**Literature references
**
S51 electrohydraulic two-position controls T1, T2 literature references
| Literature title | Description | Literature number |
|---|
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
S51 electrohydraulic two-position controls T1, T2
Nomenclature
Code M options
| M | Description |
|---|---|
| T1 | Electrohydraulic two-position control, 12 Vdc, DIN connector |
| T2 | Electrohydraulic two-position control, 24 Vdc, DIN connector |
Only certain control options for the S51 motor utilize the Electrohydraulic
Two-Position Control. Please refer to the motor’s nomenclature to determine if
the motor is equipped with the proper option. The nomenclature can be found on
the motor’s nametag.
Theory of operation
S51 electrohydraulic two-position controls T1, T2
Displacement can be changed electrohydraulically under load from minimum
displacement to maximum displacement and vice versa, by using a solenoid. When
the solenoid is energized the motor has maximum displacement and the pressure
compensator does not function.
- Solenoid not energized = minimum displacement
- Solenoid energized = maximum displacement
PCOR
The control can be overridden by Pressure Compensator Override (PCOR) using
high loop pressure. When the PCOR activates, the motor displacement increases
toward maximum. Pressure ramp from PCOR 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. PCOR start pressure is adjustable from 110 to
370 bar [1600 to 5370 psi].
T*C0*
Pressure compensator configuration: TC0 with hydraulic brake pressure defeat.
A shuttle 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 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.
T*C2*
Pressure compensator configuration: TC2 without brake pressure defeat
Pressure compensator functions when the motor is running in motor mode as well
as in pump (deceleration) mode.
Control operation T1, T2****
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 electrohydraulic two-position control T1,
T2
Ports:
A, B = Main pressure lines
L1, L2 = Drain lines
M1, M2 = Gauge port for A and B
M3, M4 = Gauge port servo pressure
M5 = Gauge port servo supply
XA, XB = Control pressure ports, brake pressure defeat
T1, T2, T3, T7, T8 = Optional orifices
N = Speed sensor
Electrical specifications
Two-position solenoid
| M-option | T1 | T2 |
|---|---|---|
| Voltage | 12 Vdc | 24 Vdc |
| Rated power | 34 W | 34 W |
Electrical installation
Pinout
DIN 43650 connector
Pin location Pinout
| Pin | Function |
|---|---|
| 1 | PWM signal |
| 2 | Ground |
Pinout (alternative)
| Pin | Function |
|---|---|
| 1 | Ground |
| 2 | PWM signal |
Pin compatibility
PLUS+1® module pin type
| Pin | Function |
|---|---|
| 1,2 | DOUT |
| 1,2 | DOUT/PVG Power |
| 1,2 | PWMOUT/DOUT/PVG Power supply |
| 1,2 | PWMOUT/DOUT/PVGOUT |
| 1,2 | Power ground – |
Mating connector
DIN 43650 connector parts list
| Description | Quantity | Ordering Number |
|---|---|---|
| DIN 43650 connector | 1 | Hirschmann 932 106-100 |
| Mating connector kit | 1 | Danfoss K09129 |
Products we offer:
• Bent Axis Motors
• Closed Circuit Axial Piston Pumps and Motors
• Displays
• Electrohydraulic Power Steering
• Electrohydraulics
• 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 applications
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.
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Go to www.powersolutions.danfoss.com
for further product information.
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Phone: +86 21 3418 5200
---|---|---|---
Danfoss can accept no responsibility for possible errors in catalogues,
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.
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Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights
reserved.
11024942
Rev BA
August 2015
www.danfoss.com
©Danfoss A/S, 2015
powersolutions.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