Variable displacement axial piston pump type C40V Product documentation Open circuit Nominal pressure pnom max: Peak pressure pmax: Displacement volume Vmax:

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Overview variable displacement axial piston pump type C40V Variable displacement axial piston pumps adjust the geometric output volume from maximum to zero. As a result they vary the ow rate that is provided to the consumers. The variable displacement axial piston pump type C40V is designed for open circuits in mobile hydraulics and operates according to the swash plate principle. The range of pump controllers allows the axial piston pump to be used in a variety of applications. Features and advantages ■ Optimized power-to-weight ratio ■ Broad selection of controllers ■ Thru-shaft compatibility...

Available versions Circuit symbol G 2.11 "Special versions and options" 2.10 "Pivoting angle of stops" Sensors Valves 2.9 "Thru-shaft" Gear pump Attachments 2.8 "Housing versions" 2.7 "Shaft journal" 2.6 "Flange versions (input side)" 2.5 "Rotation direction" 2.4 "Seals" Series version 2.2 "Controller" 2.3 "Solenoid voltage and version" 2.1 "Basic type and nominal size" 2.1 Basic type and nominal size Type Nominal pressure pnom (bar) Peak pressure pmax (bar)

2.2 Controller Load-sensing controller Coding Load-sensing controller with integrated pressure limitation (Standard version for combination with hydraulic valves that relieve the LS signal in the valve, for example, type PSV proportional directional spool valve), see Chapter 2.2.1, "Load-sensing controllers LS0DA/LS2DA" Load-sensing controller with integrated pressure limitation and additional LS relief (only for use with hydraulic valves without their own relief of the LS signal), see Chapter 2.2.1, "Load-sensing controllers LS0DA/LS2DA" Load-sensing controller with electro-proportional pressure...

2.2.1 Load-sensing controllers LS0DA/LS2DA The LS0DA, LS2DA controllers are ow controllers that generate a variable, speed-independent ow rate. They adapt the displacement volume of the pump to the required ow rate of the consumer and regulate a constant difference between load pressure and pump pressure. The integrated pressure limitation restricts the maximum pressure to a set value. LS0DA ■ Connection X2-T sealed ■ Version for combination with hydraulic valves that relieve the LS signal in the valve, for example, type PSV proportional directional spool valve LS2DA ■ Connection X2-T open...

Characteristic lines for LS0DA and LS2DA LS function pB operating pressure (bar); Q delivery ow (%) Vg geometric displacement (%); pB operating pressure (bar) LS setting screw DA setting screw Pressure adjustment Pressure adjustment Factory-set pressure setting (bar) Maximum pressure pmax

2.2.2 Load-sensing controllers LS0DE.. / LS2DE.. The LS0DE.. LS2DE.. controllers are a combination of load-sensing controller and electro-proportional pressure controller. They are typically used to simultaneously supply the working functions and the fan with a pump. The load-sensing controller (LS) generates a variable ow rate independently of the speed. It adapts the geometric displacement of the pump to the required ow rate of the consumer and regulates a constant difference between load pressure and pump pressure. The DE.. controller regulates the pump pressure on the basis of an electro-proportional...

characteristic lines for LS0DE.., LS2DE.. LS function pB operating pressure (bar); Q delivery ow (%) DE function (rising characteristic line) DE function (falling characteristic line) I control current (mA); pB operating pressure (bar) I control current (mA); pB operating pressure (bar)

Relationship between standby pressure and max. pressure at Imax pB operating pressure (bar); pStby standby pressure (bar) Pressure adjustment Adjustment range pmax (bar) Resulting range pmin (bar) Resulting standby pressure with a setting value of Sp = 20 bar

2.2.3 Pressure controller DF-DA The DF-DA controller consists of two parts. The ‘DA’ part is responsible for setting the maximum pressure. As soon as the pump pressure exceeds the set value, they reduce the swivel angle of the pump and regulate a constant pressure level. The pressure setting is adjusted using an adjusting screw on the controller, and, in addition, an external pilot valve can be connected to the X5 port to enable remote adjustment when necessary. If an external pressure-limiting valve has been connected to the X5 port, the ‘DF’ part will regulate a constant pressure level that...

2.2.4 Pressure controller DE.. The DE controller is an electro-proportional pressure controller. As soon as the pump pressure exceeds the set value, the controller reduces the swivel angle of the pump and regulates a constant pressure level. The minimum and maximum pressures are set mechanically on the controller. In between these values, the pressure can be adjusted proportionally using an electrical signal. Solenoid voltage and version: see Chapter 2.3, "Solenoid voltage and version" DE1/3/5/7 (rising characteristic line) DE2/4/6/8 (falling characteristic line) Characteristic lines DE1/3/5/7...

Relationship between standby pressure and max. pressure at Imax pB operating pressure (bar); pStby standby pressure (bar) Pressure adjustment Adjustment range pmax (bar) Resulting range pmin (bar) Resulting standby pressure with a setting value of Sp = 20 bar