These VT-VPCD closed-loop controls must be operated only with the pump controls specified in their type codes. The controls must encompass proper grounding with equipotential bonding to avoid damage to its electronics. They comprise a microcontroller as their central unit that controls the full sequence of operations.

VT-VPCD digital closed-loop controls can be accessed through a menu structure. The Rexroth closed-loop controls are associated with four keys, a display, status LEDs and lamps for inputs and outputs on their front panels. The display can be used to highlight and change parameters as well as for diagnostics purposes. These controls also have a D-Sub socket for their serial interface used to configure the software. They must be transported from one place to another only in antistatic packaging. We can offer very fast service for your digital closed-loop controls with a one-year warranty using our proprietary knowledge and tools.

• VT-VPCD closed-loop controls must be depressurized before commencing any work on their control electronics.
• The digital controls can cause electric shock if their sensitive components and exposed connection pins are touched during or immediately after operation.
• The Rexroth controls are designed for installation in 19-inch racks or open card holders. No special tools are required for installation.
• The closed-loop controls must be associated with relays featuring gold-plated contacts for switching command values such as small currents and small voltages.
• The digital closed-loop controls are capable of supporting connection with up to 32 stations using a local bus. Each station must be assigned a clear bus address.

The installation of VT-VPCD digital closed-loop controls must be done such that the connection cables are easily accessible. The closed loop controls are prone to electromagnetic interference if they are improperly connected, or the connecting cables are incorrectly connected or non-shielded. These Rexroth closed-loop controls are compatible with electrohydraulic pressure and swivel angle controls.

The operating environment of the digital controls should be free of sources of conductive contamination like acids, metal vapors, lyes, salts and corrosive agents. These controls use four binary-coded digital inputs for recalling the parameter sets from the memory that can store 16 such sets at a time. The three differential inputs of the VT-VPCD digital closed-loop controls provide the analog command values for pressure, swivel angle and maximum power.