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External control electronics for the SYDFE1 control of the A10VSO axial piston variable displacement pump VT 5041
External control electronics for the SYDFE1 control of the A10VSO axial piston variable displacement pump VT 5041
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Version Analog, Euro-card format
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Component series 3X
- Implementation of the electronic functions of the SYDFE1 control; pressure and swivel angle control; optional power limitation
- Pressure controller circuitry can be adjusted and switched to two existing hydraulic fluid volumes (actuators plus lines)
- Differential amplifier inputs
- Controller for valve spool position
- Minimum value generator for pressure and swivel angle controller
- Self-timing output stage
- Pressure-dependent leakage compensation (can be switched off)
- Reverse polarity protection for voltage supply
- Switchable actual pressure value input (current, voltage, range)
- 6 LED displays on the front plate for the operating state
- Display instrument on the front plate for actual swivel angle value (optional)
- Power limitation with internal or external command value presetting (optional)
Operating voltage |
UB |
24 V DC +40 –10%; (21,6 … 33,6 V) | ||||
Upper limit value |
UB(t)max |
V |
35 | |||
Lower limit value |
UB(t)min |
V |
21 | |||
Current consumption |
Inom |
A |
0.6 | |||
Imax |
A |
1.25 | ||||
Analog command value inputs |
Pressure |
pCOMMAND |
Ue |
0 … 10 V; Re > 50 kΩ | ||
Swivel angle |
SWCOMMAND |
Ue |
Standard ±10 V ; regenerative: 0 … 10 V; Re > 50 kΩ | |||
Power |
(p · SW)max |
Ue |
0 … 10 V; Re > 50 kΩ | |||
SWACT master |
Ue |
±10 V, Re > 50 kΩ | ||||
Analog actual value inputs |
Pressure |
pACT |
Ue |
0 ... 5 V, 0 ... 10 V; Re > 50 kΩ | ||
Ie |
0.5 ... 5 V, 1 ... 10 V; Re > 50 kΩ; 0 ... 20 mA, 4 ... 20 mA; RB = 100 Ω | |||||
Enable input |
SPS |
Ue |
> 12 V | |||
Analog outputs |
Output stage |
Solenoid current |
Imax |
2.5 A; R20 = 2 Ω | ||
Oscillator |
Frequency |
f |
kHz |
5.4 | ||
Amplitude for IW9 |
Actual swivel angle value |
uSS |
V |
1 1) | ||
Amplitude for DM2 |
Actual valve value |
uSS |
V |
3.6 2) | ||
Signal voltage outputs |
Actual pressure value |
U |
0 … 10 V | |||
Actual swivel angle value |
U |
–10 V … +10 V ≙ –100 % ... +100 % | ||||
Auxiliary voltages for external use |
U |
±(15 V +2 % –6 %); Imax = 10 mA | ||||
Measuring sockets, function and number |
Pressure command value |
1 |
pCOMMAND |
U |
0 … 10 V ≙ 0 … +100 %; Ri = 2 kΩ | |
Actual pressure value |
2 |
pACT |
U |
0 … 10 V ≙ 0 … +100 %; Ri = 2 kΩ | ||
Swivel angle command value |
3 |
SWCOMMAND |
U |
±10 V ≙ ±100 %; Ri = 2 kΩ | ||
Actual swivel angle value |
4 |
SWACT |
U |
±10 V ≙ ±100 %; Ri = 2 kΩ | ||
Valve command value |
5 |
x_vsoll |
U |
±10 V ≙ ±100 %; Ri = 2 kΩ | ||
Actual valve value |
6 |
x_vist |
U |
±10 V ≙ ±100 %; Ri = 2 kΩ | ||
Active swivel angle command value |
7 |
U |
±10 V ≙ ±100 %; Ri = 2 kΩ | |||
Power limit |
8 |
Pmax |
U |
0 … 10 V ≙ 0 … +100 %; Ri = 2 kΩ | ||
Message outputs |
Swivel angle control enabled |
U |
UB – 3V (Imax = 20 mA) | |||
Power limitation active |
U |
UB – 3V (Imax = 20 mA) | ||||
Fault messages |
Low-active |
U |
UB – 3 V (Imax = 20 mA) | |||
High-active |
U |
UB – 3 V (Imax = 20 mA) | ||||
Type of transducer |
Swivel angle |
IW9 |
inductive position transducer |
Throttle circuit; ±4 mm; 3-conductor connection | ||
Valve |
DM2 |
inductive position transducer |
Trafo circuit; ±0.6 mm; 4-conductor port | |||
Type of connection |
Compatibility |
32-pole Male multipoint connector; DIN 41612; design D | ||||
Card dimensions |
Euro-card 100 x 160 mm; DIN 41494 | |||||
Front plate dimensions |
Height |
3 HE (128,4 mm) | ||||
Width |
Conductor path side |
1 TE | ||||
Component side |
VT 5041-3X/1-0 |
5 TE | ||||
VT 5041-3X/2-0 and VT 5041-3X/3-0 |
7 TE | |||||
Operating temperature range |
ϑ |
°C |
0 … +50 | |||
Storage temperature range |
ϑ |
°C |
-20 … +70 | |||
Weight |
Electronic card |
without display |
m |
kg |
0.19 | |
with display |
m |
kg |
0.21 |
The analog control electronics VT5041-3X/... is designed as insertion card in euro format. It is provided with a command value input each for pressure and swivel angle [1] as a standard (optional power limitation). The actual pressure value is measured with a pressure transducer. The position transducer at the pump measures the actual swivel angle value. The measured actual values are processed in amplifier [2] and [3] and compared with the provided command values. The minimum value generator [4] controls that only controller [6] or [10] which is allocated to the requested operating point is automatically activated. The output signal of the minimum value generator [4] becomes the command value for the valve control loop. The optionally available power limitation is automatically activated by the provision of a suitable command value. The power command value can be provided internally or externally. If necessary, it limits the swivel angle command value by means of a minimum value generator [5]. The resulting swivel angle command value can be measured at socket 7.
The actual valve value (position of the valve spool) is measured with an inductive position transducer. An oscillator/demodulator switch [7] enhances the signal. The control deviation is generated and processed in the controller for the valve spool position [8]. The output signal of the valve controller [8] forms the command value for the self-timing power output stage [9] which controls the proportional solenoid of the valve.
The control electronics is equipped with a fault message output where a voltage of 0 V is applied in an error case (= low-active). At the same time, the "Err." LED flashes. Depending on the jumper J1 configuration, the valve output stage can be de-energized in case of an error message.
Causes for fault messages:
In an error case, the electronics can be configured so that the output stage is de-energized and the valve spool is pressed to its mechanical end position. This causes the pump to swivel back. The error can only be acknowledged by resetting the enable signal.
[ ] = assignment see block diagram