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The DVA-Kit is a compact variable speed drive (VSD) for hydraulic applications, which is characterized by a perfect symbiosis between hydraulics and electro mechanics.

The pre-configured system comprises a standard electric motor with an attached frequency inverter coupled to an external gear pump. To complete the system, a connection block with pump protection and optional accumulator is added. The electrical connection is effected directly on the frequency inverter.
Unit of Measure

Specifications

Brands

 KineSys

Drive Power

 Up to 22 kW

Operating Pressure

 Up to 210 bar

Flow Rate

 Up to 100 L/min

Input Voltage

 3 to 200 V480 V

Frequency

 47 to 63 Hz

Ratings

 Ingress Protection (IP55)

Model Code

Flow Rate Qnominal [L/min]

 Q at Nominal Motor Speed

Pressure Pnominal [bar]

 Rated Pressure

Installation Variation

 H = Horizontal V = Vertical

Blockfunction

 0 = Without 1 = Function Module with Block Function 1 2 = Function Module with Block Function 2 3 = Accumulator Charging Module 4 = Function Module with Block Function 4

Mounting

 0 = Without 1 = Bell Housing Mounted (By Installation Variation Horizontal) 2 = Motor Mounted (By Installation Variation Horizontal)

Damping Type

 0 = Without 1 = With Damping Ring (By Installation Variation Vertical) 2 = With Damping Rails (By Installation Variation Horizontal)

Model Code Fieldbus

 0 = Without 1 = Profibus 2 = EtherCAT 3 = CANopen 4 = ProfiNET

Forced Ventilation

 0 = Without 1 = With

Special Design

 0000 = Standard

Electrical Specifications

Inverter

 HYDAC HFI-MM Size A to D (0.55 kW to 22 kW)

Motor

 Standard Asynchronous Motors BG71 to BG180 (0.55 kW to 22 kW)

Pressure Measurement

 HYDAC Pressure Transducer HDA

Motor (2/4-Pole) at HFI-MM-A Inverter

 BG71 BG80 BG80/BG90 BG90

Motor (2/4-Pole) at HFI-MM-B Inverter

 BG 90/BG 100 BG100 BG112

Motor (2/4-Pole) at HFI-MM-C Inverter

 BG132

Motor (2/4-Pole) at HFI-MM-D Inverter

 BG 160 BG 160/BG180 BG 180

Power at HFI-MM-A Inverter

 0.55 kW0.75 kW1.1 kW1.5 kW

Power at HFI-MM-B Inverter

 2.2 kW3 kW4 kW

Power at HFI-MM-C Inverter

 5.5 kW7.5 kW

Power at HFI-MM-D Inverter

 11 kW15 kW18.5 kW22 kW

Operating Fluids

Operating Fluid

 Only use hydraulic oil HLP to DIN 51524 Part 2 as the operating fluid.

Minimum Viscosity Range

 10 mm²/s

Maximum Viscosity Range

 380 mm²/s

Optimum Viscosity Range

 12 to 100 mm²/s

Cleanliness Class International Organization for Standardization (ISO) 4406:1999

 21/19/16 or Better

Additional Options

Forced Ventilation

 When the motor pump unit is operated below half the nominal speed at full pressure, the motor's own ventilation is insufficient. An external fan is optionally available for such applications.

Accumulator Charging Module

 The DVA-Kit can be supplied with an accumulator charging module. This allows hydraulic functions with low flow-rate requirements to be covered by the accumulator. This increases the dynamics in the event of leakage compensation or reduces the motor's duty cycle, which results in greater energy efficiency.

Pumps

 HYDAC external gear pumps PGE size 2 (PGE102) are used in the standard version. Optionally, other HYDAC PGE external gear pumps or PGI internal gear pumps can be used.

Fieldbus

 The system can be coupled to a controller via a fieldbus. This enables target values to be specified via the bus and the status to be read.

Possible fieldbus systems:
  • Profibus
  • EtherCAT
  • CANopen
  • ProfiNET

Function Modules

Function Modules

 The function module is supplied for a horizontal installation position with the adapter plate flanged to the pump. It is generally possible to install the function module externally, for example in the vertical installation variant.

Function Module with Block Function 1

 In the function module with block function 1, a bypass with orifice plate is provided.

The minimum volume flow required for the minimum pump speed is channelled away through this bypass.

The volume flow that is actually available at the supply connection (the function module's pressure connection (P)) is thus lower than the pump volume flow (Qat P = Qpump - Qorifice).

Function Module with Block Function 2

 In the function module with block function 2, the switchable stop valve can be used to interrupt the volume flow through the orifice plate.

This makes the entire pump volume flow available at the supply connection.

Accumulator Charging Block

 The accumulator charging block with block function 3 makes it possible to control the charging of the accumulator.

If an alternating flow rate is demanded over the entire adjusting range, an accumulator charging module with hydraulic accumulator can be used. This enables operation with pressure regulation to be combined with accumulator charge control. Refer also to section 5: Application examples.

The hydraulic accumulator can also be used to increase the system dynamics.

Example: Rapid, pressure-regulated movement of a cylinder with subsequent pressure maintenance (for leakage compensation).

Function Module with Block Function 4

 The function module with block function 4 includes components relevant for reliable pressure supply, such as a non-return valve and pressure relief valve.

It is important to note that the pump's minimum volume flow must always be taken off.

Operating Mode

Operating Mode

 The DVA-Kit is designed for continuous operation (S1). Operating and environmental conditions are to be selected that do not result in the max. permissible oil temperature being exceeded. To ensure this, a heat exchanger or cooler must be integrated into the hydraulic system under certain circumstances.

Upon reaching the maximum drive temperature the DVA-Kit switches off automatically. The oil temperature can also be monitored with an automatic switch-off function on request.

Additional Information

N/A Power dissipation can be reduced to a minimum by adapting the KineSys solution to the conditions.

The drive system is fully parameterized and coordinated in the frequency inverter for the various fields of application.

The pressure and flow rate can be supplied in line with demand via the internal control system.

The basic hydraulic control system is realized via a function module, which is flanged directly to the pump.

KineSys motor-pump units are a user-friendly and energy-efficient solution for use in small to medium sized constant pressure systems.

Features

N/A

  • Integrated regulation of pressure or flow rate
  • Logic functions can be realized
  • 4 digital / 2 analogue inputs (pressure-flow rate sensor can be connected)
  • 2 digital / 1 analogue output
  • No switch cabinet needed
  • Differing technical data possible upon request (such as higher pressures and flow rates, IP65)

Product Advantages

Product Advantages
  • Continuous operation with constant pressure possible for specific applications
  • Variable speed accumulator charging can be integrated, with switch-off function
  • Variable pressure and flow level
  • Various control algorithms can be integrated
  • Electrical connection only via frequency inverter (independent of phase rotation)

Delivery

Delivery

 The DVA-Kit is fully assembled and inspected before delivery, with customer-specific parameters preset.

Variants

Variants
  • In the horizontal installation variant the DVA-Kit is delivered fully assembled
  • In the vertical installation variant for tank installation the function module is delivered separately

Note

N/A The information in this brochure relates to the operating conditions and applications described.

For applications and operating conditions not described, please contact the relevant technical department.

Subject to technical modifications.