5.1性能描述

闭环控制电子VT-VPCD是A4VS型轴向柱塞泵旋转角度、压力和功率限制的电液控制系统的一部分。具有HS4控制以及A2V型轴向柱塞泵…配有EO4控制，每个配有比例阀和转角和位置传感器，用于感应转角和阀芯行程。控制电子VT-VPCD提供控制类型HS4和EO4所需的所有电气功能。控制电子VT-VPCD可以使用软件BODAC进行配置。

5.2产品描述

括号内的数字是指第5.2.2章“框图”中的框图，从第20页开始。

完整系统的工作原理在数据表re30028中说明。

数字控制电子VT-VPCD由一个转角控制器、一个压力控制器、一个阀门控制器以及一个功率限制器组成。泵斜盘位置由感应转角传感器感应，实际压力值由压力传感器感应。两个实际值都被馈送到控制电子设备，并通过软件相互连接。实际功率值由实际压力值与实际转角值积而成。

控制器软件在最小值比较器的帮助下确保只有控制器是活动的，并将其分配给相关的工作点。

控制电子设计为双面印刷电路板在欧洲卡格式100 x 160毫米。它包括一个开关模式电源单元[1]，产生所有内部所需的电压。

VT-VPCD-1-15/V0/1-P-1

5.1 Performance description

The closed-loop control electronics VT-VPCD is part of a control system for the electrohydraulic control of swivel angle and pressure and power limitation of axial piston pumps of type A4VS… with HS4 control as well as axial piston pumps of type A2V… with EO4 control, each fitted with a proportional valve and swivel angle and position transducers for sensing the swivel angle and the valve spool travel. The control electronics VT-VPCD provides all electrical functions required for the control types HS4 and EO4. The control electronics VT-VPCD can be configured using the software BODAC.

5.2 Product description

The figures given in brackets refer to the block circuit diagrams in Chapter 5.2.2 “Block circuit diagrams“ from page 20 on.

The operating principle of the complete system is explained in data sheet RE 30028.

The digital control electronics VT-VPCD consists of a swivel angle controller, a pressure controller and a valve controller as well as of a power limiter. The position of the pump‘s swashplate is sensed by an inductive swivel angle transducer, the actual pressure value is sensed by a pressure transducer. Both actual values are fed to the control electronics and linked to each other by software. The actual power value is formed by the product of actual pressure value and actual swivel angle value.

The controller software ensures with the help of a minimum value comparator that only the controller is active, which is assigned to the relevant working point.

The control electronics is designed as double-sided printed-circuit board in Euro card format 100 x 160 mm. It comprises a switched-mode power supply unit [1], which generates all the internally required voltages.