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Pressure and flow control system SYHDFEC-1X
Pressure and flow control system SYHDFEC-1X
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Version With axial piston variable displacement pump A4VSO
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Size 125 … 355
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Component series 1X
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Maximum operating pressure 350 bar
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A SYHDFEE-1X control system is used for the electro-hydraulic control of swivel angle, pressure and power (partially optional, see type key pilot control and preload valve) of an axial piston variable displacement pump.
The control system consists of the following components: - A4VSO axial piston variable displacement pump optimized for the operation in the control system
- VT-DFPC-.2X proportional valve as pilot valve with integrated electronics including inductive position transducer for valve position sensing.
- Position transducer for sensing the swivel angle
- Pressure transducer with suitable signal level and dynamics (separate order)
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Size |
125 | 180 | 250 | 355 | ||||
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Displacement |
Vg max |
cl |
125 | 180 | 250 | 355 | ||
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Max. speed 1) |
no max |
rpm |
1800 | 1500 | ||||
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Minimum speed |
nmin |
rpm |
50 | |||||
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Max. flow (displacement) |
at max. speed |
qv0 max |
l/min |
225 | 324 | 450 | 533 | |
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with nE = 1500 min-1 |
l/min |
186 | 270 | 375 | 533 | |||
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Max. power (Δp = 350 bar) |
at max. speed |
P0 max |
kW |
131 | 189 | 263 | 311 | |
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with nE = 1500 min-1 |
kW |
109 | 158 | 219 | 311 | |||
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Max. torque (Δp = 350 bar) |
Tmax |
Nm |
696 | 1002 | 1391 | 1976 | ||
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Maximum permissible drive torque |
Fitting key |
Ttotal |
Nm |
1392 | 1400 | 2300 | 3557 | |
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Splined shaft Z overall torque |
Ttotal |
Nm |
1392 | 2004 | 2782 | 3952 | ||
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Max. admissible through-drive torque |
TD |
Nm |
696 | 1002 | 1391 | 1976 | ||
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Drive shaft load |
 |
max. admissible axial force |
Fax max |
N |
1000 | 1400 | 1800 | 2000 |
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max. admissible radial force |
Fq |
N |
1600 2) | 2000 2) | 2200 2) | |||
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Weight without filling quantity |
m |
kg |
88 | 102 | 184 | 207 | ||
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Moment of inertia around drive axis |
kg·m² |
0.03 | 0.055 | 0.0959 | 0.19 | |||
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Filling quantity of the housing |
l |
5 | 4 | 10 | 8 | |||
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Maximum admissible operating pressure 3) |
pmax |
bar |
350 | |||||
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Operating pressure, min. (without load) |
pmin |
bar |
≥ 20 | |||||
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Admissible inlet pressure |
p |
bar |
0,8 ... 30 | |||||
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Hydraulic fluid |
Mineral oil (HL, HLP) according to DIN 51524; HFC optional | |||||||
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Hydraulic fluid temperature range |
ϑ |
°C |
-20 … +70 | |||||
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Maximum admissible degree of contamination of the hydraulic fluid according to ISO 4406 |
Class 18/16/13 (for particle size ≤ 4/6/14 μm) | |||||||
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1 |
Swash plate |
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2 |
Pilot valve |
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3 |
Counter piston |
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4 |
Actuating piston |
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5 |
Spring |
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6 |
Inductive position transducer |
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7 |
Swivel angle position sensor with integrated electronics VT-SWA-LIN |
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8 |
Proportional solenoid |
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9 |
Valve spool |
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10 |
Spring |
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11 |
Integral electronics |
|
12 |
Connector X1 |
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13 |
Connector X2 (always available) |
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14 |
Mating connector X3 for connection of the CAN bus |
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15 |
Drive shaft |
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16 |
Connection flange |
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17 |
Subplate with through-drive U99, without hub, without intermediate flange |
