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Proportional Valve Controllers

Soft Shift—12 or 24 VDC Input (Soft)

<div>
<h3>Product Features</h3>
• Mounts directly to solenoid coils with DIN 43650A connectors. 
• IP65 weather resistant when used with base gasket (supplied). 
• Adjustments accessible with a removable cover. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDCCoil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Output Current: 2 Amps Max. 
Ramp Adjustment: 0.01 to 5 seconds 
I-Max. Adjustment: 200–650 mA, or 900–2000 mA 
Dither Frequency: 300 Hz ±10% (fi xed) 
Dither Amplitude: 10% of rated maximum (fi xed) 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
Environmental Protection: IP65 with cover and base gasket installed 
<a title="3.425.1" href="https://www.savery.co.uk/products/view/3-425-1">3.425.1</a> 
GENERAL SPECIFICATIONS 
Plug Housing: Polyamide 
Plug Lid: Polycarbonate 
Weight: 30 g (1.06 oz.) without cable 
Connections: Mounted cable with unterminated wires provided; Length: approximately 2 meters (79&#8243;) 
Proportional Valve Controller—DIN Coil Mount— 
SCHEMATIC7.5 V (LDO)LOW DROP OUT REGULATORSOLENOIDOUTPUTREVERSE POLARITYPROTECTIONTRANSIENTPROTECTIONCURRENT SENSING AND SHORT CIRCUITPROTECTION24 VPS +–S2S1D2D1ERRORAMPLIFIERWAVEFORMGENERATORPOWERUPI-MAX.RAMPTIME+–HIGH FREQUENCYPWMMODULATORPOWEROUTPUTSTAGE(9-32 VDC)
</div>

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This controller uses the power supply voltage as the control signal. It has an adjust- able increasing ramp and an adjustable I-Max. setting. When power is applied to this controller, its output ramps up to maximum current in a time period that is adjustable within a factory set range. The ramp adjustment allows the user to define the length of time required for the hydraulic valve to reach its maximum output. When electrical power is removed, the output of this controller immediately falls to zero.

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Bespoke Projects

<ul class="ul1">
<li class="li1">Bespoke lubrication systems for testing Aerospace propulsion using high temperature fluids and test article scavenge capability</li>
<li class="li1">Bespoke lubrication solution for testing Automotive EV components.</li>
<li class="li1">Bespoke assembly rigs for Aircraft landing gear with built in test facilities.</li>
<li class="li1">Bespoke pressure testing and flushing rigs for Aircraft assembly plants.</li>
<li class="li1">Purpose design test benches for fluid power components.</li>
<li class="li1">Ground support trolleys for production and field use for Aircraft testing.</li>
<li class="li1">Hydraulic ring mains for aircraft production and servicing.</li>
<li class="li1">Hydraulic Infrastructure for test houses.</li>
</ul>

Bespoke-Projects

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Savery Hydraulics have a highly experienced team for fluid control for hydraulic, electronic control, installation and project management. Using this experience we have supported customers with a wide range of projects which are not traditionally considered hydraulic equipment. Some examples of bespoke projects we have successfully delivered are:-

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Hydraforce

Hydraforce products meet global quality standards including ISO 9001, QS 9000 and CE. Every Hydraforce valve, coil, solenoid, manifold and electro-hydraulic control goes through rigorous testing and inspection to perform beyond industry standards.

Savery offers one of the most comprehensive lines of hydraulic valves, solenoids and coils and is the UK distributor for the Hydraforce range of products for the mobile and industrial equipment markets, including high performance valves for flow rates of 0.4 to 530lpm and pressure up to 420 bar.

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Hydraulic Control Systems  

Tailored Solutions for Precision Control 
Our in-house hardware and software design team is dedicated to delivering cost-effective and reliable solutions for a wide array of control system needs. From embedded microcontroller systems to large-scale machine controls, we excel in designing and developing systems that meet the most demanding specifications. 
&nbsp;
Cloud-Based Monitoring for Seamless Access 
We offer cloud-based system monitoring solutions that provide 24/7 access through smart phone or tablet apps, giving you real-time insights into your operations from anywhere. 
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Industry-Leading Expertise 
With extensive experience across various industries, including aerospace, automotive, wind turbine testing, marine, and industrial sectors, our engineers bring invaluable expertise to every project. 
 
Hardware and Software Capabilities 
Small-Scale Control Systems: We design cost-effective control systems in-house using bespoke electronic control boards giving you optimal performance for your specific needs. 
Microchip Programming: We specialise in programming microchips for specialist applications in fluid power, providing tailored solutions for precise control. 
Large-Scale Machine Control Systems: Our capabilities include designing dedicated Motor Control Centre (MCC) cabinets and implementing System Control and Data Acquisition (SCADA) plant monitoring for seamless operation of complex machinery. 
Software Authoring: We are proficient in various software platforms, including: 
<ul>
<li>Delta Motion Controllers </li>
<li>National Instruments LabView© </li>
<li>National Instruments LabWindows CVI© </li>
<li>PLCs: Allen Bradley, Siemens, Omron, Schneider, Bachmann, Koyo </li>
<li>HMI and SCADA Systems: Siemens, Schneider, Bachmann, Koyo </li>
</ul>
 
Cost-Effective Solutions, Tailored to Your Needs 
Our deep understanding of different control systems enables us to select the most cost-effective platform to suit your systems development, ensuring you get the best value for your investment. 
At Savery, we are committed to delivering innovative, reliable, and tailored solutions that optimise the performance of your hydraulic systems, empowering you to achieve your goals with precision and efficiency.  
Get in touch with us today to discuss your project needs.

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At Savery, we design and manufacture electronic systems that ensure the safe and efficient control and monitoring of hydraulic equipment. Our expertise lies in providing comprehensive control system solutions tailored to your specific requirements, with a focus on bespoke applications. 

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Hydraulic Control Systems

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Hydraulic Power Unit

Our power units vary from compact, fixed pump systems to intricate setups featuring multiple variable displacement pumps and energy-saving variable speed drive technology. These units can be equipped with control manifolds for basic relief unloading functions or complex hydraulic control circuitry, custom-made for your application. 
We offer bespoke electrical control equipment that can manually or automatically control the power source, adhering to all current safety standards. This can be paired with simple condition monitoring for parameters such as flow, pressure, level, temperature, and fluid condition, or with advanced SCADA data recording for remote access via the cloud. This ensures safe and reliable 24/7 operation of equipment. 
Our power units can include fluid reservoirs ranging from 10 litres to over 14,000 litres, with built-in bund containment to meet regulatory requirements. 
With Savery, you’re in safe hands. We work with you from conception through design, project planning, installation, commissioning, and servicing to deliver a cost-effective and efficient hydraulic and control solution. 
We have successfully completed projects in various industries, including: 
<ul>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="1" data-aria-level="1">Civil: Flood Barriers, Roll-on/Roll-off dock equipment </li>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="2" data-aria-level="1">Marine: Ship Stabiliser, steering and deck equipment (with in-house 60 Hz testing capability) </li>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="3" data-aria-level="1">Testing Infrastructure: Automotive, Aerospace, research and production component testing </li>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="4" data-aria-level="1">Mechanical Handling: Large Scissor lifts </li>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="5" data-aria-level="1">Defence and Security: Specialist equipment </li>
<li data-leveltext="" data-font="Symbol" data-listid="2" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="6" data-aria-level="1">Wind: Turbine Blade testing </li>
</ul>
Trust Savery Hydraulics for your hydraulic power needs.

Hydraulic-Power-Unit

At Savery Hydraulics, we specialise in the design and manufacture of hydraulic power units tailored to customer specifications. Our offerings range from single fractional power motors to multiple pump sets, with power installations up to 2 Mw. 

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Savery custom manifolds can be designed as part of a new power unit or to enhance your existing equipment & machinery. Custom designed manifolds offer no-leak, screw-in components with fast and easy valve removal and replacement. 

ManifoldAssembly

Our team of experienced engineers can simplify the most complex hydraulic circuits to reduce cost, improve reliability, minimise pipe work connections and the physical size &amp; weight of the solutions.
Custom manifold assemblies are: 
<ul>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="1" data-aria-level="1">Designed by our engineers in house using the latest 3D CAD software for integration into your product. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="2" data-aria-level="1">Designed utilising Hydraforce cartridge valves and a vast range of other manufacturer’s components to achieve the required performance. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="3" data-aria-level="1">Machined using modern CNC equipment with specialist tooling to ensure high quality. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="4" data-aria-level="1">Manufactured from aluminium, steel or stainless steel to meet system pressure, flow and application requirements. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="5" data-aria-level="1">Designed in conjunction with your engineers to ensure we meet your unique requirements and installation needs. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="6" data-aria-level="1">Supplied in a variety of sizes from small manifold blocks with cartridges capable of controlling low(a few litres per minute) flow rate up to large complex assemblies for hundreds of litres per minute. </li>
<li data-leveltext="" data-font="Symbol" data-listid="1" data-list-defn-props="{&quot;335552541&quot;:1,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;&quot;,&quot;469777815&quot;:&quot;multilevel&quot;}" aria-setsize="-1" data-aria-posinset="7" data-aria-level="1">Supplied fully assembled &amp; tested in our UK facility &amp; meeting the necessary ISO recommended guidelines for hydraulic cleanliness prior to dispatch. </li>
</ul>

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Savery custom manifolds can be designed as part of a new power unit or to enhance your existing equipment & machinery. Custom designed manifolds offer no-leak, screw-in components with fast and easy valve removal and replacement.

Manifold Assembly

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Contact Us

Savery hydraulic power packs and mini power packs are the culmination of many years of experience in manufacturing AC and DC power packs.

Small HydraulicPower Packs

The PB300 series of power units offer the latest design and features not normally associated with this type of unit. The units have a pressure up to 300 bar, which is achieved by the use of high specification materials. The centre adaptor can be machined to give a vast range of integral control options for single and double acting circuits.
Applications for this type of unit are numerous DC units for battery powered use include our tail lift packs and can be found on tippers, aerial access equipment and material handling trucks. AC units with power ratings from 0.25kW to 5.5kW have an even greater range of applications including the retail and service industry for the handling of goods &#8211; loading and unloading of vehicles and the lift industry for lifts installed in the home, disabled lifts and automotive assembly plants.
Savery has developed hydraulic power packs specifically for applications such as dock levellers, which provide a bridge between the loading bay and the truck being loaded or unloaded.
PB300 units have;
<ul>
<li>DC units 12V &amp; 24V / 0.2 – 3.5kW.</li>
<li>AC units 3 Phase &amp; 1 Phase / 0.25 – 5.5kW.</li>
<li>A vast range of control options for single and double acting circuits.</li>
<li>Advanced pressure die-cast aluminium centre adaptor.</li>
<li>The ability to eliminate porosity.</li>
</ul>
<img loading="lazy" decoding="async" class="alignnone size-full wp-image-5274" src="https://cms.savery.co.uk/wp-content/uploads/2024/03/E11-Logo.jpg" alt="" width="110" height="48" />

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Savery offer a complete and comprehensive range of hydraulic power units, incorporating highly flexible, cost effective modular construction suited to both OEM and small users. The design of units for special applications is an important part of Savery’s marketing activities and our engineers can develop a unit to perfectly match our customer’s requirements.

Savery hydraulic power packs and mini power packs are the culmination of many years of experience in manufacturing AC and DC power packs.


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Small Hydraulic Power Packs

PWM (Pulse Train) Input (PWM)

<div class="product-info group">
<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. The input 
signal to this controller can be from a PWM (pulse train) source.
</div>
<div>
<h3>Product Features</h3>
• Adjustments and connections clearly labeled.• LED indication of output power level, input level and power on/off. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting.• Current sensing circuit maintains output current regardless of changes in input voltage or coil resistance. 
• Independent ramp adjustments.• Filter eliminates electrical noise. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal: 250 to 5000 Hz PWM (pulse train); 5% to 95% duty cycle; Low &lt; 1.5 volts; High &gt; 3.5 volts; 50 volts maximum 
Input Resistance: 9.7K Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable) 
Maximum Current Range: 600–2000 mA (adjustable) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (±10%) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –20° to 85°C; 0 to 85% relative humidity 
<a title="3.437.1" href="https://www.savery.co.uk/products/view/3-437-1">3.437.1</a> 
Proportional Valve Controller—DIN Rail Mount— 
SCHEMATICDITHERGENERATORSOLENOIDOUTPUTACTIVEREVERSE POLARITYPROTECTIONINPUT SIGNALNORMALIZATIONAND PWM TOVOLTAGECONVERSIONCURRENT SENSING AND SHORT CIRCUITPROTECTION24 VPS POWERGND+–+–S2S1 0–2.0 AMPSOUTRAMPUPRAMPDOWNERRORAMPLIFIER+–INDEPENDENTRAMP CONTROLFUNCTION HIGHFREQUENCYPWMOUTPUTSTAGEPWM INPUTPWM GNDENABLECONTROLSECTIONPOWER SUPPLY&amp; REFERENCE(9-32 VDC)+10 V–10 V+5 V REF.I-MAX.DITHERLEVELI-MIN.R3R4R6R10R5R8R7R9–7.5 VR2DITHER FREQUENCYR1 
GENERAL SPECIFICATIONS 
Weight: 25 g (0.88 oz.) 
Connections: Screw terminals for 16–30 AWG wire
</div>
</div>
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A DIN rail-mount style control amplifier for controlling HydraForce proportional valves. Remote mounting in a protected enclosure is required.



<div class="product-info group">
<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. The input 
signal to this controller can be from a PWM (pulse train) source.
</div>
<div>
<h3>Product Features</h3>
• Adjustments accessible under removable cover.• LED indication of output power level, input level and power on/off. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting.• Current sensing circuit maintains output current regardless of changes in input volt-age or coil resistance. 
• Independent ramp adjustments.• Filter eliminates electrical noise. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal: 250 to 5000 Hz PWM (pulse train); 5% to 95% duty cycle; Low &lt; 1.5 volts; High &gt; 3.5 volts; 50 volts maximum 
Input Resistance: 9.7K Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable) 
Maximum Current Range: 600–2000 mA (adjustable) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (±10%) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
<a title="3.433.1" href="https://www.savery.co.uk/products/view/3-433-1">3.433.1</a> 
Proportional Valve Controller—Metal Housing— 
SCHEMATICDITHERGENERATORSOLENOIDOUTPUTACTIVEREVERSE POLARITYPROTECTIONINPUT SIGNALNORMALIZATIONAND PWM TOVOLTAGECONVERSIONCURRENT SENSING AND SHORT CIRCUITPROTECTION24 VPS POWERGND+–+–S2S1 0–2.0 AMPSOUTRAMPUPRAMPDOWNERRORAMPLIFIER+–INDEPENDENTRAMP CONTROLFUNCTION HIGHFREQUENCYPWMOUTPUTSTAGEPWM INPUTPWM GNDENABLECONTROLSECTIONPOWER SUPPLY&amp; REFERENCE(9-32 VDC)+10 V–10 V+5 V REF.I-MAX.DITHERLEVELI-MIN.R3R4R6R10R5R8R7R9–7.5 VR2DITHER FREQUENCYR1 
GENERAL SPECIFICATIONS 
Metal Housing: Conformal coated; IP67 rated 
Weight: Metal Box without cable: 400 g (14.1 oz.) 
Connections: Mounted cable with unterminated wires provided; Length: Approx. 1.5 meters (59&#8243;) 
CE Documented
</div>
</div>

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A metal box-style control amplifier for controlling HydraForce proportional valves. The metal housing is IP67 rated. Remote mounting is required.

Dual Solenoid Multifunction Valve Driver (Dual)

<div class="product-info group">
<div>
<h3>Product Operation</h3>
This controller will accept inputs from a joystick potentiometer with or without center tap, from a standard potentiometer, or from commonly available control signals such as 0–5 VDC, ±5 VDC, 0–10 VDC, ±10 VDC, 0–20 mA, and ±20 mA. It is designed for circuits using dual solenoid proportional four-way valves, single solenoid proportional flow and pressure controls, single or dual solenoid on/off valves, or half-speed 
functions.
</div>
<div>
<h3>Product Features</h3>
• Adjustments easily accessible and clearly labeled. 
• One unit covers supply voltages from 9 to 32 VDC.• Current sensing circuit maintains output current regardless of changes in input volt-age and coil resistance.• High/Low range input provides reduced output for training or operation of equipment in tight spaces. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• User selectable Deadband Jump. 
• Adjustable Min. and Max. current.• Pump Enable output active only when joystick is active. 
• Asymmetrical or symmetrical ramps—user selectable using Dip Switch 2 
• Center Null feature accommodates joystick or potentiometer centering errors.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: User selectable using Dip Switch 1: Voltage Inputs: 0–5 VDC (2.5 VDC=0); 0–10 VDC (5 VDC=0); ±5 VDC (0 VDC=0); ±10 VDC (0 VDC=0) Current Inputs: 0–20 mA (10 mA=0); ±20 mA (0 mA=0) Joystick Potentiometer Input: 10K potentiometer recommended; 5K to 50K pots can be used; The potentiometer connection provides a 5.0 VDC bias voltage as well as a 2.5 VDC center tap driving voltage. A remote joystick potentiometer with or without center tap can be used. Low Range Input (I-Max/2): Full speed unconnected; 50% speed activated by applying 9–32 VDC through an external switch. 
Input Resistance: Current Mode: 250 Ohms Voltage Mode: 0–5 VDC, 1.38M Ohms ±5 VDC, 750K Ohms 0–10 VDC, 750 K Ohms ±10 VDC, 1.75M Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–2000 mA (adjustable) 
Maximum Current Range: 0–2000 mA (adjustable) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable using Dip Switch 2) 
Dither Frequency: 70–350 Hz (adjustable) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
<a title="3.438.1" href="https://www.savery.co.uk/products/view/3-438-1">3.438.1</a> 
Proportional Valve Controller—Metal Housing— 
GENERAL SPECIFICATIONS 
Metal Housing: Conformal coated Exte-rior; Potted Interior; IP65 rated 
Weight: 0.58 kg (1.28 lbs.) 
Connections: Flat, tab-style (22); mates with 0.25 inch female tab connector: Keystone part no. 4470; also accepts 16–20 AWG wire. Model with screw terminals available.
</div>
</div>
<div class="product-related"> </div>

3-438-1-main-image

3-438-1-image-dimensions-1

3-438-1-image-dimensions

A metal box-style control amplifier for controlling HydraForce proportional valves. The metal housing is potted and is IP65 rated. Remote mounting is required. This controller has seven outputs that provide accurate control of hydraulic proportional and directional valves for a variety of hydraulic functions.

4-20 mA Input (4)

<div class="product-info group">
<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to sup-ply a proportional valve solenoid with a proportional control signal. The input signal to 
this controller can be from a 4–20 mA source.
</div>
<div>
<h3>Product Features</h3>
• Adjustments accessible under removable cover.• LED indication of output power level, input level and power on/off. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting.• Current sensing circuit maintains output current regardless of changes in output volt-age or coil resistance.• Filter eliminates electrical noise; 
Independent ramp adjustments. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: 4–20 mA current signal (see connection diagram) 
Input Resistance: 33K Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable; see ordering info.) 
Maximum Current Range: 600–2000 mA (adjustable; see ordering info.) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (adjustable) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
<a title="3.432.1" href="https://www.savery.co.uk/products/view/3-432-1">3.432.1</a> 
Proportional Valve Controller—Metal Housing— 
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERINPUT, OUTPUTANDPOWER SUPPLYINDICATORSSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDCURRENT LOOP TRANSMITTER+–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIERLOWPASSFILTER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERANALOG GNDCURRENT IN(4-20 mA)NOT USEDENABLENOT USED+12 V–12 V+5 V(9-32 VDC)CF 
GENERAL SPECIFICATIONS 
Metal Housing: Conformal coated; IP67 rated 
Weight: Metal Box without cable: 400 g (14.1 oz.) 
Connections: Mounted cable with unterminated wires provided; Length: Approx. 1.5 meters (59&#8243;)
</div>
</div>
<div class="product-related"> </div>

3-432-1-main-image

3-432-1-image-dimensions

3-432-1-graphs-image

A metal box-style control amplifier for controlling HydraForce proportional valves. The metal housing is IP67 rated. Remote mounting is required. This model is designed for circuits with long wire runs or where electrical interference is a problem.

<div>
<h3>Product Features</h3>
• Mounts directly to solenoid coils with DIN 43650A connectors. 
• IP65 weather resistant when used with base gasket (supplied). 
• Adjustments accessible with a removable cover. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Connector can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting. 
• Independent ramp adjustments. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDCCoil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: 4–20 mA current signal 
Input Resistance: 50 Ohms 
Output Current: 1200 mA 
Minimum Current Range: 0–150 mA, adjustable 
Maximum Current Range: 400–1200 mA, adjustable 
Ramp Up and/or Down: 0.01–5.0 seconds, independently adjustable 
Dither Frequency: 70–350 Hz, adjustable 
Dither Amplitude: 0–10% of maximum current, adjustable 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
Environmental Protection: IP65 with cover and base gasket installed 
<a title="3.423.1" href="https://www.savery.co.uk/products/view/3-423-1">3.423.1</a> 
GENERAL SPECIFICATIONS 
Plug Housing: Polyamide 
Plug Lid: Polycarbonate 
Weight: 30 g (1.06 oz.) without cable 
Connections: Mounted cable with unterminated wires provided; Length: approximately 2 meters (79&#8243;) 
Proportional Valve Controller—DIN Coil Mount— 
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDCURRENT LOOP TRANSMITTER+–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERSIGNAL GNDCURRENT IN(4-20 mA)+12 V–12 V+5 V(9-32 VDC)
</div>

3-423-1-main-image

3-423-1-image-dimensions

3-423-1-graphs-image

This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. This control- ler will accept a 4–20 mA input signal from a programmable logic controller (PLC) or other control systems.

<div class="product-info group">
<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. The input 
signal to this controller can be from a 4–20 mA source.
</div>
<div>
<h3>Product Features</h3>
• Adjustments and connections clearly labeled.• LED indication of output power level, input level and power on/off. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting.• Current sensing circuit maintains output current regardless of changes in input voltage or coil resistance.• Filter eliminates electrical noise; 
Independent ramp adjustments. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal: 4–20 mA current signal (see connection diagram) 
Input Resistance: 50 Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable) 
Maximum Current Range: 600–2000 mA (adjustable) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (±10%) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –20° to 85°C; 0 to 85% relative humidity 
<a title="3.436.1" href="https://www.savery.co.uk/products/view/3-436-1">3.436.1</a> 
Proportional Valve Controller—DIN Rail Mount— 
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERINPUT, OUTPUTANDPOWER SUPPLYINDICATORSSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDCURRENT LOOP TRANSMITTER+–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIERLOWPASSFILTER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERANALOG GNDCURRENT IN(4-20 mA)NOT USEDENABLENOT USED+12 V–12 V+5 V(9-32 VDC)CF 
GENERAL SPECIFICATIONS 
Weight: 25 g (0.88 oz.) 
Connections: Screw terminals for 16–30 AWG wire 
CSA Listing:CSA C22.2 No. 14-M91
</div>
</div>
<div class="product-related"> </div>

3-436-1-main-image

3-436-1-image-dimensions

3-436-1-graphs-image

A DIN rail-mount style control amplifier for HydraForce proportional valves. Remote mounting in a protected enclosure is required. This model is designed for circuits with long wire runs or where electrical interference is a problem.



10K Pot or 0-5 VDC Input—Economy Version (10K)

<div>
<h3>Product Operation</h3>
This control module supplies a proportional valve solenoid with a proportional control signal. The input signal to this controller can be from a 10K potentiometer or a 0–5 VDC source. This economy version has no ramp adjustments. Dither frequency and 
amplitude are factory pre-set.
</div>
<div>
<h3>Product Features</h3>
• Mounts directly to solenoid coils with DIN 43650A connectors. 
• IP65 weather resistant when used with base gasket (supplied). 
• Adjustments accessible with a removable cover. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Connector can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting. 
• Internal supply for potentiometer.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: 10K external potentiometer (accepts 5K to 50K pots), or 0–5 VDC current signal (see connection diagrams) 
Input Resistance: 187K Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable) 
Maximum Current Range: 600–2000 mA (adjustable) 
Internal Supply for Setpoint Potentiometer: +5VDC 
Dither Frequency: 90 or 220 Hz (±10% of full scale) Preset at Factory 
Dither Amplitude: 5% Preset at Factory 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
Environmental Protection: IP65 with cover and base gasket installed 
<a title="3.424.1" href="https://www.savery.co.uk/products/view/3-424-1">3.424.1</a> 
GENERAL SPECIFICATIONS 
Plug Housing: Polyamide 
Plug Lid: Polycarbonate 
Weight: 30 g (1.06 oz.) without cable 
Connections: Mounted cable with unterminated wires provided; Length: approximately 2 meters (79&#8243;) 
Proportional Valve Controller—DIN Coil Mount— 
SCHEMATICLOW DROP OUT (LDO) VOLTAGEREGULATORSOLENOIDOUTPUTACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDPOTENTIOMETER INPUT +–S2S1I-MAX.RDRMIN.RINRMAX.ERRORAMPLIFIER+–RMI-MIN.+5VVOLTAGETO HIGH FREQUENCYPWMCONVERTERSIGNAL GNDVOLTAGE IN(0-5 VDC)VOLTAGEREFERENCEGENERATOR+5 VREFERENCE (9-32 VDC)
</div>

3-424-1-main-image

3-424-1-image-dimensions

3-424-1-graphs-image

A convenient, plug-mounted control amplifier for controlling HydraForce proportional valves that have solenoids with DIN 43650A/ISO 4400 electrical connectors.

0-5 VDC, 10K Pot or 0-20 mA Input (0–5 VDC, 1)

<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to sup-ply a proportional valve solenoid with a proportional control signal. The input signal to this controller can be from a 10K potentiometer, 0–5 VDC, 0–20 mA, or from other 
pre-set levels.
</div>
<div>
<h3>Product Features</h3>
• Mounts directly to solenoid coils with DIN 43650A connectors. 
• IP65 weather resistant when used with base gasket (supplied). 
• Adjustments accessible with a removable cover. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Connector can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting. 
• Independent ramp adjustments and internal supply for potentiometer. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: 10K external potentiometer (accepts 5K to 50K pots), or 0–5 VDC signal, or 0–20 mA current signal (see connection diagrams) 
Input Resistance: Voltage Control: 125K Ohms; Current Control: 50 Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable; see ordering info.) 
Maximum Current Range: 600–2000 mA (adjustable; see ordering info) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (adjustable) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –40° to 85°C; 0 to 85% relative humidity 
Environmental Protection: IP65 with cover and base gasket installed 
<a title="3.421.1" href="https://www.savery.co.uk/products/view/3-421-1">3.421.1</a> 
GENERAL SPECIFICATIONS 
Plug Housing: Polyamide 
Plug Lid: Polycarbonate 
Weight: 30 g (1.06 oz.) without cable 
Connections: Mounted cable with unterminated wires provided; Length: approximately 2 meters (79&#8243;) 
Proportional Valve Controller—DIN Coil Mount— 
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDPOTENTIOMETER INPUT +–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERSIGNAL GNDCURRENT IN(0-20 mA)VOLTAGE IN(0-5 VDC)VOLTAGEREFERENCEGENERATOR+5 VREFERENCE +12 V–12 V+5 V(9-32 VDC)
</div>

3-421-1-main-image

3-421-1-image-dimensions

3-421-1-graphs-image

<div>
<h3>Product Operation</h3>
This control module uses closed-loop current control with superimposed dither to supply a proportional valve solenoid with a proportional control signal. The input signal to this controller can be from a 10K potentiometer, 0–5 VDC, 0–20 mA, 
or from other pre-set levels.
</div>
<div>
<h3>Product Features</h3>
• Adjustments and connections clearly labeled.• LED indication of output power level, input level and power on/off. 
• One unit covers supply voltages from 9 to 32 VDC. 
• No internal fuses; circuit limits current electronically. 
• Short circuit proof and reverse polarity protected. 
• Can be disconnected from coil when powered. 
• Maximum current adjustment does not affect minimum current setting. 
• Independent ramp adjustments and internal supply for potentiometer.• Filter eliminates electrical noise. 
• Dither frequency and amplitude are adjustable for maximum valve performance.
</div>
<div>
<h3>Product Ratings</h3>
Supply Voltage: 9–32 VDC Coil rating must be matched with supply voltage: RCOIL ≤ (VSUPPLY – 1.5 V) / I-Max. 
Control Input Signal Options: 10K external potentiometer (accepts 5K to 50K pots), or 0–5 VDC signal, or 0–20 mA current signal (see connection diagrams) 
Input Resistance: Voltage: 250K Ohms; Current: 33 Ohms 
Output Current: up to 2000 mA (see ordering info.) 
Minimum Current Range: 0–500 mA (adjustable; see ordering info.) 
Maximum Current Range: 600–2000 mA (adjustable; see ordering info.) 
Ramp Up and/or Down: 0.01–5.0 seconds (independently adjustable) 
Dither Frequency: 70–350 Hz (adjustable) 
Dither Amplitude: 0–10% of maximum current (adjustable) 
Operating Conditions: –20° to 85°C; 0 to 85% relative humidity 
<a title="3.434.1" href="https://www.savery.co.uk/products/view/3-434-1">3.434.1</a> 
Proportional Valve Controller—DIN Rail Mount— 
SCHEMATICSTEP-DOWNCONVERTERVPS TO 5.5 VSTEP-UPDC/DCCONVERTERINPUT, OUTPUTANDPOWER SUPPLYINDICATORSSOLENOIDOUTPUTDITHERAMPLITUDEACTIVEREVERSE POLARITYPROTECTIONDITHERGENERATORCURRENT SENSING AND SHORT CIRCUITPROTECTIONVPS POWERGNDPOTENTIOMETER INPUT +–S2S1RMI-MAX.RAMP UPRAMP DOWNRMAX.ERRORAMPLIFIERLOWPASSFILTER+–RDARMIN.I-MIN.+5 VRDDITHER FREQUENCYRDITHERINDEPENDENTRAMP CONTROLFUNCTIONVOLTAGETO HIGH FREQUENCYPWMCONVERTERSIGNAL GNDCURRENT IN(0-20 mA)ENABLEVOLTAGE IN(0-5 VDC)VOLTAGEREFERENCEGENERATOR+5 VREFERENCE +12 V–12 V+5 V(9-32 VDC)CF 
GENERAL SPECIFICATIONS 
Weight: 25 g (0.88 oz.) 
Connections: Screw terminals for 16–30 AWG wire 
CSA Listing:CSA C22.2 No. 14-M91
</div>

3-434-1-graphs-image

3-434-1-image-dimensions

A DIN rail-mount style control amplifier for controlling HydraForce proportional valves.



Soft Shift—12 or 24 VDC Input (Soft)

Product Features

Product Ratings

Soft Shift—12 or 24 VDC Input (Soft)

PWM (Pulse Train) Input (PWM)

PWM (Pulse Train) Input (PWM)

Dual Solenoid Multifunction Valve Driver (Dual)

4-20 mA Input (4)

4-20 mA Input (4)

4-20 mA Input (4)

10K Pot or 0-5 VDC Input—Economy Version (10K)

0-5 VDC, 10K Pot or 0-20 mA Input (0–5 VDC, 1)

0-5 VDC, 10K Pot or 0-20 mA Input (0–5 VDC, 1)

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