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SPU Series Compact Servo Power Unit – Total Solution

Compact Servo Power Units
Complete with Power Unit, Motor, Controls, Cables, and Factory Assistance

SPU Series Compact Servo Power Unit – Total Solution

Benefits

totally sealed design
Totally Sealed Design
Precise Control icon
Precise Servo Control
Shock & side-load tolerant
Shock Load Tolerant
Energy efficient icon
Energy Efficient
Environmentally friendly icon
Environmentally Friendly
Minimal maintenance icon
Minimal Maintenance
No Metal-to-Metal Wear
No Metal-to-Metal Wear

Key Features

PSI icon
Up to 3,000 PSI (207 BAR)
GPM icon
Up to 11.98 GPM (45.35 LPM)
AC _ DC Coil Voltage icon (1)
24 – 80 VDC, 120 – 460 VAC

Servo Power Units (SPU) combine hydraulic power with the controllability of electric servo systems to deliver efficient and precise motion control. Unlike traditional hydraulic power units that run continuously, servo power units utilize power-on-demand operation that reduces energy consumption and improves overall system efficiency.

The Kyntronics SPU Compact Servo Power Unit Total Solution integrates the servo motor, pump, and controls into a single compact package. The SPU Total Solution connects to a hydraulic cylinder and/or rotary motors via short hoses with robust fittings while providing component integration and programming for a complete package. The compact size allows for greater design flexibility and integration into tight spaces, making it an ideal solution for new or retrofit applications.

Overview
Specifications
Design Features & Options
Control & HMI Features

Modernize the Way You Use Hydraulics

The SPU provides a compact approach to hydraulic power that can be configured around the needs of the application. By combining electric control with hydraulic power, the SPU can simplify hydraulic system architecture while providing the flexibility to support linear motion, rotary motion, valve actuation and multiple hydraulic functions.

 

Why Choose the SPU?

Distribute Hydraulic Power: Reduce the need for centralized hydraulic infrastructure, long hose runs, large reservoirs and associated components by locating hydraulic power closer to where it is needed.

Reduce Maintenance & Leak Points: A more compact, hybrid design reduces hoses, fittings and fluid volume, helping minimize potential leak points, maintenance requirements and hydraulic fluid management.

Improve Energy Efficiency: Rather than continuously circulating hydraulic fluid, the SPU uses power only when the application requires it, helping reduce unnecessary energy consumption and heat generation.

Modernize Without Starting Over: Upgrade the hydraulic power unit and control system while retaining existing cylinders, rotary actuators, valves and mechanical components where appropriate—reducing the need for extensive machine redesign.

Adapt to the Application: Configure the SPU around the required motion, flow, power and number of hydraulic devices rather than forcing the application around a fixed hydraulic architecture.

Configured To Your Application

Compact Hybrid Power Units are available in three basic configurations to fit a variety of application requirements.

Standard SPU Configuration

  • Operates a single cylinder or a rotary motor
  • Reservoir for rod compensation

SPU Multi-Port Configuration

 

  • Connect with multiple cylinders or rotary actuators (up to 16) with independent control using solenoid operated ports (“Octet” Image Shown)
    • Clamping cylinders
    • Lifts
    • Valve operation
      • Open / Close
      • Position Control

SPU Multi-Power Unit Configuration

  • Produces higher speed and flow
  • Can switch from multiple Power Units for high speed, then to a single unit for slow speed accurate force control
  • Allows two or more Power Units operating in parallel
Where are Compact Power Units (SPUs) typically used?

SPUs are used in new and retrofit applications where a compact, servo-controlled alternative to traditional HPUs are needed. They connect via short hoses to a linear cylinder or rotary actuator. Common uses include presses, mobile equipment, valve actuation, and washdown environments.

What benefits does a Compact Servo Power Unit (SPU) provide compared to a traditional hydraulic power unit (HPU)?

SPUs provide energy-efficient, power-on-demand operation, a sealed, low-maintenance design, and a compact footprint. Built-in servo control allows for precision position and force control, eliminating the need for external controls, making them a cost-effective alternative to traditional HPUs.

I want to upgrade from a traditional hydraulic power unit, but I want to use the existing cylinders that are connected to it. What are my options?

SPUs are designed for retrofit applications, connecting directly to existing cylinders or rotary actuators via short hoses. This allows you to upgrade to servo control while reducing energy use, leaks, and maintenance.

Specifications for SPU Series Compact Servo Power Units Total Solution

Click here for the complete part number breakdown and description of components.

Series / Model Number Alpha-Numeric Designation: SPUxxMzz

SPUxx: designates the pump size – for example

  • SPU02 is a size 2 pump
  • SPU21 is a size 21 pump
  • SPU36 is a size 36 pump

zz: designates the motor size – for example

  • M06 is a 60mm motor
  • M14 is a 142mm motor
  • M19 is a 190mm motor

If model name contains a ‘D’ after ‘M’ this designates DC version. If model name does not contain ‘MD’ designates AC version.

ModelPumpMotorInput VoltagePressure
(psi)		Flow
(gpm)
SPU02P02M06230 VAC, 460 VAC30000.17
SPU02P02M08230 VAC, 460 VAC30000.17
SPU02P02MD0624Vdc, 48 VDC30000.17
SPU02P02MD0824Vdc, 48 VDC30000.17
SPU05P05M08230 VAC, 460 VAC30000.4
SPU05P05MD0824Vdc, 48 VDC28080.4
SPU05P05M06230 VAC, 460 VAC25850.4
SPU05P05MD0624Vdc, 48 VDC14800.4
SPU07P07M08230 VAC, 460 VAC30000.66
SPU07P07MD0824Vdc, 48 VDC17090.66
SPU07P07M06230 VAC, 460 VAC15730.66
SPU07P07MD0624Vdc, 48 VDC9010.66
SPU11P11M08230 VAC, 460 VAC21561.06
SPU11P11MD0824Vdc, 48 VDC10621.06
SPU11P11M06230 VAC, 460 VAC9781.06
SPU11P11MD0624Vdc, 48 VDC5601.06
SPU13P13M08230 VAC, 460 VAC14001.63
SPU13P13MD0824Vdc, 48 VDC6891.63
SPU13P13M06230 VAC, 460 VAC6351.63
SPU13P13MD0624Vdc, 48 VDC3631.63
SPU21P21M14230 VAC, 460 VAC30001.85
SPU21P21M19230 VAC, 460 VAC30001.85
SPU21P21M11230 VAC, 460 VAC26571.85
SPU21P21MD1124Vdc, 48 VDC17211.85
SPU21P21M08230 VAC, 460 VAC12271.85
SPU21P21MD1024Vdc, 48 VDC9611.85
SPU21P21MD0824Vdc, 48 VDC6051.85
SPU23P23M14230 VAC, 460 VAC30002.23
SPU23P23M19230 VAC, 460 VAC30002.23
SPU23P23M11230 VAC, 460 VAC22142.23
SPU23P23MD1124Vdc, 48 VDC14342.23
SPU23P23M08230 VAC, 460 VAC10232.23
SPU23P23MD1024Vdc, 48 VDC8012.23
SPU23P23MD0824Vdc, 48 VDC5042.23
SPU27P27M19230 VAC, 460 VAC30002.97
SPU27P27M14230 VAC, 460 VAC28792.97
SPU27P27M11230 VAC, 460 VAC16612.97
SPU27P27MD1124Vdc, 48 VDC10752.97
SPU27P27M08230 VAC, 460 VAC7672.97
SPU27P27MD1024Vdc, 48 VDC6012.97
SPU27P27MD0824Vdc, 48 VDC3782.97
SPU31P31M19230 VAC, 460 VAC30004.17
SPU31P31M14230 VAC, 460 VAC20474.17
SPU31P31M11230 VAC, 460 VAC11814.17
SPU31P31MD1124Vdc, 48 VDC7654.17
SPU31P31M08230 VAC, 460 VAC5454.17
SPU31P31MD1024Vdc, 48 VDC4274.17
SPU31P31MD0824Vdc, 48 VDC2684.17
SPU34P34M19230 VAC, 460 VAC28635.38
SPU34P34M14230 VAC, 460 VAC15885.38
SPU34P34M11230 VAC, 460 VAC9165.38
SPU34P34MD1124Vdc, 48 VDC5935.38
SPU34P34M08230 VAC, 460 VAC4235.38
SPU34P34MD1024Vdc, 48 VDC3315.38
SPU34P34MD0824Vdc, 48 VDC2085.38
SPU36P36M19230 VAC, 460 VAC21847.05
SPU36P36M14230 VAC, 460 VAC12127.05
SPU36P36M11230 VAC, 460 VAC6997.05
SPU36P36MD1124Vdc, 48 VDC4527.05
SPU36P36M08230 VAC, 460 VAC3237.05
SPU36P36MD1024Vdc, 48 VDC2537.05
SPU36P36MD0824Vdc, 48 VDC1597.05

Compact Hybrid Power Unit - Total Solution Design Features

Compact Hybrid Power Units (SPU) incorporate numerous design features that make them an ideal alternative to traditional hydraulic power units.

  • Up to 10.3 GPM (43.2 LPM) at 3,000 PSI
  • AC and DC motor compatible (24 – 80 VDC, 120 – 460 VAC)
  • Works with most any double-acting linear cylinder or rotary actuator using standard ISO 16028 3/8” connections
  • Easily adapts to existing cylinders or rotary actuators
  • Power-on-demand, efficient operation saves energy
  • Minimal fluid volume
  • Standard ISO68 fluid
  • Adjustable relief valves (extend and retract) eliminate overpressure
  • Smooth control eliminates abrupt flow changes and stress on hoses and connections
  • Dynamic braking for smooth control of overriding loads
  • Automatic fill feature for simplified maintenance
  • Unpressurized and pressurized versions

Optional Features

Additional optional features provide flexibility.

  • Locking solenoid valves (extend and/or retract)
  • Counterbalance valves (extend and/or retract)
  • Float Mode
  • Standard or high-resolution position sensor for position measurement and control
  • Pressure sensors for force measurement and control
  • Explosion Proof package with intrinsically safe sensors
  • Fail safe power loss feature
  • Manual backup pump
  • Food-grade fluid
  • Fire-resistant fluid
  • IP67, IP68, IP69k packaging
  • Special coatings

Linear Cylinder Options Available from Kyntronics:

  • Standard
  • Stainless Steel
  • Epoxy Coated
  • Nickel Plated
Can I use my existing cylinder with a Compact Power Unit (SPU)?

SPUs are designed to connect directly to existing cylinders or rotary actuators using short hoses or piping. The unit includes the pump, motor, drive, and controls in a compact, integrated package.

When should I choose a Compact Power Unit (SPU) instead of a Hybrid Linear Actuator (SHA)?

An SPU may be a better choice when the application uses existing or customer-preferred hydraulic cylinders, requires rotary motion or multiple hydraulic functions, benefits from locating the hydraulic power source separately from the actuator, or when retaining the existing mechanical design can help avoid costly or unnecessary machine redesign.

Our ‘Total Solution’ control and HMI package includes a comprehensive set of hardware and software features including packaging options, multiple control modes, data logging, and connectivity with common fieldbus networks. Best of all, with our “Total Solution” package, we assist with system tuning, factory testing of the complete system, and comprehensive remote support to help you commission your system efficiently and productively.

Total Solution - Control Packaging Options

Kyntronics offers a variety of control packaging options including drive kits, backplates that mount in your enclosure, full enclosure options, and multiple-axis versions.

Single Drive on Panel - Backplate

Single Drive on Panel - Backplate

Single Drive Enclosure

Single Drive Enclosure

Multi-Axis Enclosure

Multi-Axis Enclosure

Multi-Axis Enclosure

Multi-Axis Enclosure

Total Solution Control System Features

Kyntronics’ Controls Software Package provides the programming and control functionality needed to integrate the SPU into your machine or system. Developed and tested for the application, the package helps simplify controls integration, reduce programming and commissioning time, and provide a complete, ready-to-integrate solution.

Motors/Drives used with the Kyntronics Total Solution:
  • Nidec / Control Techniques
  • AC and DC solutions
    • 120 – 460 VAC, 12 – 96 VDC

 

Selectable Control Modes with Programmable Limits
  • Position Control (can be used for a constant speed mode)
  • Position with Force Limiting (Bump-less switching from Position to Force control)
  • Force Control Mode
Programmable Options:
  • Press control
  • Solenoid locking (failsafe)
  • Spool winding logic
  • High-Speed, High-Force programmable logic
  • Quality checks (pass/fail)
  • Data logging
  • Diagnostic tools
  • Auto Control-Loop Tuning
Fieldbus Connectivity:
  • CANopen
  • Ethernet TCP/IP
  • Ethernet IP
  • EtherCAT
  • Modbus TCP
  • Modbus RTU
  • Profinet
  • Analog/Digital
  • Other – Consult Factory

Connectivity to most any PLC / Controller – e.g., ABB, Allen Bradley, Automation Direct, Delta Motion, Mitsubishi, Siemens, Yaskawa, etc.

Factory Support:
  • Fully tested to the specifications
  • Tuned control loops
  • Documentation
  • Remote technical support

 

Contact Factory for additional Total Solution Controls options or questions.

Total Solution HMI Package – Standard Features

Our ‘Total Solution’ controls package offers two optional HMI packages. The 7in touch screen option incorporates a Horner controller that can be integrated into the control cabinet or separately mounted in an operator console. The PC-Based option incorporates Kyntronics “Vector” software package installed on a customer-supplied PC. Both package options include extensive software features outlined below. Upon request, Kyntronics can provide customer-specific software modifications to these packages. Consult the factory for more information.

7-Inch Touch Screen

Options:
  • Can be provided separately or mounted on a door or operator station
  • Software can be provided (available to be modified)
  • Communicates with the Kyntronics Control Software Package

 

Software Features include:
  • Diagnostics
  • Setup
  • Tuning
  • Indexing & Sequencing setup (16 indexes)
  • Jogging / Start / Stop Operation
  • Quality Signature Checks – (go-no go)
  • Data Logging to USB

 

 

 

 

 

 

HMI Integrated in Control Cabinet

 

 

Remote Operator Console

DOWNLOAD TECHNICAL MANUAL FOR HORNER HMI

PC Based HMI with Kyntronics Vector Software

  • Motion Profile Setup:
    • Indexes
      • Position, Position with Force Limit & Force Modes
      • Limits
        • Position, Speed, Force
      • Target “acceptable” limits (window)
      • Desired dwell
      • Timeouts
    • Sequences (string indexes together)
    • Quality checks (PASS / FAIL)
    • Recipes
      • Import / Export
  • Motion Profile Execution
    • Run selected motion profiles
    • Single or Continuous Run
      • Data Logging
    • Selectable – Field Selections
    • Diagnostics
    • Limit annunciation
  • Manual Operations
    • Jog / Move commands
    • Feedback (position, force, RPM)
    • Limits
    • Start / Stop
  •  Setup
    • IP address
    • Connectivity
    • Date/time
    • Drive status
  • Synchronization
    • Run state
    • Motion state
    • Cycle counts
    • Trending
  • Debugging
    • Execution based info
    • Log file
    • Communication state

Consult factory for additional features if not listed.
Can Compact Power Units (SPU) control both position and force?

SPUs provide closed-loop position and force control using external sensors and optional pressure transducers. They can control position, control force, or seamlessly switch between the two, most commonly using position control with force limit.

Does a Compact Power Unit (SPU) require proportional or hydraulic servo valves?

No. In those cases where precision motion control is required, instead of using a proportional or hydraulic servo valve to meter flow from a continuously operating hydraulic supply, the SPU uses servo motor speed and torque control to control pump output. This approach provides precise actuator position, speed, and force control with a simplified architecture.

Is a Compact Power Unit (SPU) only needed when precise servo control is required?

No. Precise servo control is one advantage, but an SPU can also be used to reduce energy consumption, hydraulic infrastructure, fluid volume, maintenance, or machine footprint. Servo control is an optional feature of the SPU, and is how the SPU delivers greater control flexibility, not the only reason to use one.

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