MAKING MODERN LIVING POSSIBLE
Electrical Installation
Series 51 Motor
Electrohydraulic Two-Position
Controls T1, T2
powersolutions.danfoss.com
Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
Revision history Table of revisions
Date Changed Rev
August 2015 Converted to Danfoss layout BA
April 2007 First edition AA
2 11024942 • Rev BA • August 2015
Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
Contents
Literature references
S51 electrohydraulic two-position controls T1, T2 literature references..................................................................... 4
Latest version of technical literature.........................................................................................................................................4
Product overview
Product image................................................................................................................................................................................... 5
Nomenclature....................................................................................................................................................................................5
Theory of operation.........................................................................................................................................................................6
S51 electrohydraulic two-position controls T1, T2......................................................................................................... 6
PCOR................................................................................................................................................................................................ 6
T*C0..................................................................................................................................................................................................6
T*C2..................................................................................................................................................................................................6
Control operation T1**, T2**...................................................................................................................................................6
Hydraulic schematics...................................................................................................................................................................... 7
Electrical specifications.................................................................................................................................................................. 7
Electrical installation
Pinout....................................................................................................................................................................................................8
DIN 43650 connector.................................................................................................................................................................8
Pin compatibility...............................................................................................................................................................................8
Mating connector.............................................................................................................................................................................8
DIN 43650 connector parts list...............................................................................................................................................8
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Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
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
On/Off Functions Function Block User Manual Compliant function block
Latest version of technical literature
Danfoss product literature is online at: http://powersolutions.danfoss.com/literature/
Complete product electrical
and mechanical
specifications
set-up information
520L0440
11022918
4 11024942 • Rev BA • August 2015
5 1
R G L F M N J S T W Y P K V Z
Electrical Installation
Product overview
Product image
Nomenclature
S51 Electrohydraulic Two-Position Controls T1, T2
S51 electrohydraulic two-position controls T1, T2
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.
11024942 • Rev BA • August 2015 5
min.
12V/24V
max.
Displacement
Electrohydraulic
two-positioncontrol
PCOR start
setting range
Ramp <
10 [145]
130
[1890]
370 [5 370]
Pressure compensator
override bar, [psi]
P001 872E
W
Electrical Installation
Product overview
Theory of operation
S51 Electrohydraulic Two-Position Controls T1, T2
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: T*C0 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: T*C2 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.
6 11024942 • Rev BA • August 2015
n
T3T2
T1 T7 T8
max.
disp.
B
L2 M4 M3
N
M1
L1
M2
M5
A
P001 785E
X4
XB
XA
X4
with
Brake pressure
defeat
without
Brake pressure
defeat
Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
Product overview
Hydraulic schematics
Circuit diagram – motor with electrohydraulic two-position control T1**, T2**
Electrical specifications
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
Two-position solenoid
M-option
Voltage
Rated power
T1 T2
12 Vdc 24 Vdc
34 W 34 W
11024942 • Rev BA • August 2015 7
1 2
Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
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
Mating connector
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 -
DIN 43650 connector parts list
Description Quantity Ordering Number
DIN 43650 connector 1 Hirschmann 932 106-100
Mating connector kit 1 Danfoss K09129
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Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
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Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
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Electrical Installation S51 Electrohydraulic Two-Position Controls T1, T2
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Danfoss
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Phone: +49 4321 871 0
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www.comatrol.com
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www.hydro-gear.com
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www.daikin-sauer-danfoss.com
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