R901149890 Bosch Rexroth Directional valve

Set-up: The IAC-R valve basically consists of:

• Direct operated high-response valve (1) with control spool and sleeve in servo quality

• Integrated digital axis controller (2) with analog and digital sensor interfaces and field bus connection (X3)

High-response valve with integrated axis controller with analog interfaces (X1, X4, X7) High-response valve with integrated axis controller with analog interfaces (X1, X4) and digital interface (X7) Functional description The IAC-R valve (Integrated Axis Controller based on high-response valves) is a digital high-response valve with integrated axis controller and the following functionalities:

• Flow control

• Position control

• Pressure control

• p/Q function

• Substitutional position/pressure or position/force control

• NC functionality

• The command value presetting can alternatively be specified via an analog interface (X1) or via the field bus interface (X3)

• The actual value signals are provided via an analog interface (X1) and can additionally be read out via the field bus (X3).

• The controller parameters are set via the field bus.

• Separate supply voltage for bus/controller and power part (output stage) for safety reasons

WinHPT PC program To implement the project planning task and to parameterize the IAC-R valves, the user may use the WinHPT commissioning software (see accessories):

• Parameterization

• Programming of NC functionality

• Diagnosis

• Comfortable data management on a PC

• PC operating systems: Windows 2000 or Windows XP

The digital integrated control electronics enables the following error detection:

• Cable break sensor technology

• Undervoltage

• Temperature of the integrated electronics

• Communication error

• Watchdog

The following additional functions are available:

• Ramp generator

• Internal command value profile

• Enable function, analog/digital

• Error output 24 V (e.g. as switching signal to PLC/logic and additional valves), max 1.8 A

• Actuating variable adaptation

• Dead band compensation

• Zero point correction

• Valve inflection compensation

• Friction compensation

• direction-dependent amplification