MRS Proportional Amplifier 9-30 V

Product Image Description

A small, black electronic component, identified as a Proportional Amplifier, with pins and markings including "MRS 1.030.310.00", "Proportional Amplifier", "CI 30X", "31 15", "ZIBIY", and "www.mrs-electronic.com". It also has a label ">PA66 GF30<".

Contact Data

MRS Electronic GmbH & Co. KG
Klaus-Gutsch-Str. 7
78628 Rottweil
Germany

Telephone: +49 741 28070

Internet: https://www.mrs-electronic.com

E-mail: info@mrs-electronic.com

Product

Product designation: Proportional Amplifier 9-30 V

Types: 1.030 Proportional Amplifier 9-30 V

Serial Number: see type plate

Document

Name: Proportional_Amplifier_9-30_OI1_1.2

Version: 1.2

Date: 01/2025

General Information

The original operating instructions were composed in German.

MRS Electronic GmbH & Co. KG compiled this document with the utmost diligence and based on the current state of technology. MRS Electronic GmbH & Co. KG will not assume any liability or responsibility for errors in content or form, missing updates as well as any possibly resulting damages or drawbacks.

Products are developed according to European norms and standards. Therefore, the use of these products is currently limited to the area of the European Economic Area (EEA). If products are to be used in another area, market access research must be carried out beforehand. This can be done by the market introducer, or MRS can be contacted to discuss how to proceed.

1. User Information

1.1. About These Operating Instructions

The manufacturer MRS Electronic GmbH & Co. KG (hereinafter referred to as MRS) delivered this product in its entirety and functionally sound. The operating instructions provide information about how to:

• Install the product
• Service the product (cleaning)
• Uninstall the product
• Dispose of the product

It is essential to read these operating instructions thoroughly and completely before working with the product. MRS strives to compile all information for safe and complete operation. For questions not answered by these instructions, please contact MRS.

Storage and transfer of the operating instructions

These instructions, along with all other product-related documentation relevant for different applications, must always be kept on hand and be available in the vicinity of the product.

Target group of the operating instructions

These instructions address trained experts familiar with handling electronic assemblies. Trained experts are persons who can assess assigned tasks and recognize possible dangers due to their expert training, knowledge, experience, and understanding of relevant standards and regulations.

Validity of the operating instructions

The validity of these instructions takes effect with the transfer of the product from MRS to the operator. The version number and approval date are included in the footer. Changes to these operating instructions are possible at any time without specification of reasons.

ℹ️ INFORMATION
The current version of the operating instructions replaces all previous versions.

Warning information in the operating instructions

The operating instructions contain warning information before a call to action, including the risk of property damage or personal injury. Measures for averting risks must be implemented. Warning information is structured as follows:

DANGER! SOURCE AND CONSEQUENCE

Plus explanation, where needed. Includes Prevention.

• Warning symbol: ⚠️ (Warning triangle) indicates the danger.
• Signal word: Specifies the seriousness of the danger.
• Source: Designates the type or source of the danger.
• Consequence: Specifies the consequences in case of noncompliance.
• Prevention: Informs how to avert the danger.

⚠️ DANGER!
Designates an immediate, serious threat which will with certainty lead to serious injury or even death if the danger is not averted.

⚠️ WARNING!
Designates a possible threat which may lead to serious injury or even death if the danger is not averted.

⚠️ CAUTION!
Designates a potentially dangerous situation which may lead to mild or medium property damage or physical injury if the danger is not averted.

ℹ️ INFORMATION
Sections with this symbol provide important information about the product or how to handle the product.

Symbols used in the operating instructions

• General warning sign: ⚠️
• Beware of electrical current: ⚡
• Beware of hot surface: ?

1.2. Copyright

These operating instructions contain information protected by copyright. The contents or excerpts may not be copied or reproduced in any other way without prior consent from the manufacturer.

1.3. Warranty Conditions

See the General Terms and Conditions MRS Electronic GmbH & Co. KG at https://www.mrs-electronic.com/en/terms

2. Safety

2.1. Hazards

This chapter includes all information required for safely installing and operating the product. The control unit is constructed with the newest technology and recognized safety-relevant regulations. Danger for persons and/or property may arise from improper use. Lack of compliance with work safety rules may result in damages. This section describes possible hazards relevant during assembly, installation, and commissioning.

Faulty operations

Faulty software, circuits, or parameter settings may cause unforeseen reactions or malfunctions in the complete system.

⚠️ WARNING! DANGER DUE TO MALFUNCTION OF THE COMPLETE SYSTEM
Unforeseen reactions or malfunctions of the complete system may endanger the safety of people and machine. Please ensure the control unit is equipped with the proper software and that circuits and parameter settings are compliant with the hardware.

Inappropriate operation

The control unit may only be operated as instructed in the data sheet. It may only be operated by battery, not by mains supply.

⚠️ WARNING! DANGER DUE TO MALFUNCTION OF THE COMPLETE SYSTEM
Unforeseen reactions or malfunctions of the complete system may endanger the safety of people and machine. Please ensure the control unit is only operated as instructed in the data sheet and only by battery.

Moving components

The complete system may create unforeseen dangers during commissioning and servicing.

⚠️ WARNING! SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components. Before performing any work, shut down the complete system and secure it against unintended restart. Before commissioning, ensure the complete system and all parts are in a safe state.

Touching of contacts and pins

⚠️ WARNING! DANGER DUE TO MISSING PROTECTION OF TOUCHING!
Protection of touching contacts and pins must be ensured. Use the socket as per the accessories list in the data sheet or the watertight socket including supplied protection caps (order number 114265) to ensure contact protection.

Non-compliance with IP protection class

⚠️ WARNING! DANGER DUE TO NON-COMPLIANCE WITH THE IP PROTECTION CLASS!
Compliance with the IP protection class specified in the data sheet must be ensured. Compliance is given without further measures. Using the watertight socket with protection caps (order number 114265) for variants without potentiometer can achieve a higher IP protection class.

Elevated temperature

⚠️ CAUTION! DANGER OF BURNS!
The casing of the control unit may exhibit an elevated temperature. Please do not touch the casing and let all system components cool down before working on the system.

2.2. Staff Qualifications

These operating instructions refer to the qualifications of employees for installation and maintenance. The three groups are:

• Specialists/Experts
• Skilled persons
• Authorized persons

This product is not suitable for use by persons (incl. children) who are mentally or physically disabled or lack experience/knowledge, unless supervised or having attended detailed training by a responsible person.

Specialists/Experts

Examples include fitters or electricians capable of assuming tasks like transport, assembly, and installation under an authorized person's guidance. They must be experienced in handling the product.

Skilled persons

Persons with sufficient knowledge from specialist training, familiar with national occupational protection provisions, accident prevention regulations, guidelines, and recognized technology rules. They must be capable of assessing their work's results and familiarizing themselves with these instructions.

Authorized persons

Persons permitted to perform work due to legal regulations or approved by MRS for specific tasks.

2.3. Obligations of the Manufacturer of Complete Systems

• System development, installation, and commissioning may only be performed by trained and experienced staff (see Chapter 2.2 Staff Qualifications).
• The manufacturer must ensure no defective or faulty control units are used. Replace faulty units immediately.
• The manufacturer must ensure circuitry and programming do not lead to safety-relevant malfunctions in case of failure.
• The manufacturer is responsible for correct connection of all peripherals (e.g., cable profiles, protection against touching, plugs, crimps, sensor/actuator selection/connection).
• The control unit may not be opened.
• No changes and/or repairs may be performed on the control unit.
• If the control unit falls, it may no longer be used and must be returned to MRS for checking.
• The manufacturer must inform the end customer about all potential dangers.

Manufacturer's additional considerations for using the control unit:

• Control units with wiring suggestions from MRS do not constitute systematic responsibility for complete systems.
• Safe operation cannot be guaranteed for control units used as prototypes or samples.
• Faulty circuitry and programming may lead to unforeseen signals to the outputs.
• Faulty programming or parameter setting may lead to dangers during operation.
• Ensure the supply of the electric system, final stages, and external sensor supply are shut down jointly when the control unit is released.
• Control units without factory-made software programmed more than 500 times may no longer be used in complete systems.

Risk of accidents is reduced if manufacturers observe the following points:

• Adherence to statutory regulations regarding accident prevention, occupational safety, and environmental protection.
• Provision of all documents required for installation and maintenance.
• Monitoring of the cleanliness of the control unit and the complete system.
• Responsibilities for assembly must be clearly specified by the manufacturer. Assembly and maintenance staff must be regularly instructed.
• Work and maintenance on electric energy sources carry dangers. Persons unfamiliar may cause harm.
• Installation and maintenance staff must be instructed by the manufacturer regarding potential dangers, safety measures, and provisions before beginning work.

3. Product Description

The Proportional Amplifier serves as a flow rate regulator for proportional valves and is used in many hydraulic applications. The microcontroller-based current regulator provides a constant output current proportional to the set point value (0-10 Volt or 0-20 mA). Fluctuations in supply voltage and temperature are compensated, ensuring constant flow rates. To counteract stiction and hysteresis effects, a dither frequency (superimposed small rectangular ripple frequency) can be added. Refer to the section on housings and base plates for additional housing options.

4. Transport and Storage

4.1. Transport

The product must be packed in suitable transport packaging and secured against sliding. Statutory provisions regarding securing loads must be observed during transport.

If the control unit falls, it may no longer be used and must be returned to MRS for checking.

4.2. Storage

Store the product in a dry place (no dew), dark (no direct sunlight) in a clean room that can be locked. Please observe the permissible environmental conditions in the data sheet.

5. Intended Use

The control unit is an electromechanical switch used to switch circuits on and off in vehicles and self-propelled work machines and may only be used for this purpose.

You are within regulations if:

• The control unit is operated within the operating ranges specified and approved in the corresponding data sheet.
• You strictly adhere to the information and sequence of tasks described in these operating instructions and do not engage in unauthorized actions that may risk your safety and the functionality of the control unit.
• You comply with all specified safety instructions.

⚠️ WARNING! DANGER DUE TO UNINTENDED USE!
The control unit is only intended for use in vehicles and self-propelled work machines. Application in safety-relevant system parts for functional safety is not permitted. Please do not use the control unit in explosive areas.

Misuse

• Use of the product in conditions and requirements differing from those specified by the manufacturer in technical documentation, data sheets, and operating instructions.
• Non-compliance with safety information and information regarding assembly, commissioning, maintenance, and disposal specified in the operating instructions.
• Conversions and changes of the control unit.
• Use of the control unit or parts thereof which are damaged or corroded. The same applies to seals and cables.
• Operation in a condition with access to live parts.
• Operation without the safety measures intended and provided by the manufacturer.

MRS only guarantees/is liable for the control unit corresponding to the published specifications. If the product is used in a way not described in these operation instructions or in the data sheet, the protection of the control unit will be impaired, and the warranty claim will be void.

6. Assembly

Assembly work may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications). The control unit may only be operated after installation in a fixed location.

ℹ️ INFORMATION
If the control unit falls, it may no longer be used and must be returned to MRS to be checked.

6.1. Mounting Location

The mounting location must be selected such that the control unit is subjected to as low a mechanical and thermal load as possible. The control unit may not be exposed to chemicals.

ℹ️ INFORMATION
Please observe the permissible environmental conditions in the data sheet.

6.2. Mounting Position

Mount the control unit so that the connectors point downwards. This ensures possible condensation water can flow off. Individual seals of the cables/wires prevent water from entering the control unit. Compliance with the IP protection class and protection against touching must be ensured by using appropriate accessories according to the accessories list in the data sheet.

6.3. Fastening

Control unit with flat plugs (pursuant to ISO 7588-1: 1998-09)

Control units with flat plugs are plugged into the plugs provided by the manufacturer of the complete system. Please observe the instructions in chapter 7 Electric Installation.

7. Electric Installation and Wiring

7.1. Electric Installation

Electric installation work may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications). The electric installation of the unit may only be performed in idle condition. The control unit may never be connected or disconnected on-load or when live.

⚠️ WARNING! SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components. Before performing any work, shut down the complete system and secure it against unintended restart. Please make sure that the complete system and all parts of the system are in a safe state. Please ensure that the control unit is connected correctly. Check the pin assignment.

Control unit with flat plugs (pursuant to ISO 7588-1: 1998-09)

1. Please ensure that the control unit is inserted into the correct slot. Follow the connection diagram and documents of the complete system.
2. Please ensure that all flat plugs of the control unit are free of dirt and moisture.
3. Please ensure that the slot does not exhibit any damages due to overheating, insulation damages, and corrosion.
4. Please ensure that all sockets of the control unit are free of dirt and moisture.
5. If the control unit is used in a vibrating environment, it must be secured by a latch to prevent it from shaking loose.
6. Plug the control unit vertically all the way into the slot.

The commissioning process can now be performed; see Chapter 8 Commissioning.

7.2. Wiring

ℹ️ INFORMATION
Always use an external fuse in the power supply line to protect the device against overvoltage. For further information about the correct fuse rating, please refer to the corresponding data sheet.

• The wiring must be connected with the utmost diligence.
• All cables and their laying must comply with applicable regulations.
• Connected cables must be suitable for temperatures at least 10 °C above the maximum permitted environmental temperature.
• Cables must comply with the requirements and wire cross-sections specified in the technical data.
• When laying cables, the possibility of mechanical damages to the wire insulation on sharp edges or moving metal parts must be excluded.
• Cables must be laid so they are strain-relieved and friction-free.
• Cable routing must be selected so that the cable harness moves identically to the direction of movement of the controller/plug (attachment controller/cable/strain relief on the same underground). A strain relief is necessary (see Figure 1).

8. Commissioning

Commissioning work may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications). The unit may only be commissioned if the condition of the complete system complies with applicable guidelines and regulations.

ℹ️ INFORMATION
MRS recommends a functional test on site.

⚠️ WARNING! SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components. Before commissioning the system, please make sure that the complete system and all parts of the system are in a safe state. If necessary, secure all hazard areas with barrier tapes.

The operator must ensure that:

• The correct software has been embedded and corresponds with the circuitry and parameter setting of the hardware (only for control units supplied by MRS without software).
• No persons are present in the vicinity of the complete system.
• The complete system is in a safe state.
• Commissioning is performed in a safe environment (horizontal and solid ground, no weather impact).

9. Software

The installation and/or replacement of device firmware / software must be performed by MRS Electronic GmbH & Co. KG or by an authorized partner for the warranty to remain valid.

ℹ️ INFORMATION
Control units supplied without software can be programmed using MRS Realizer. More information is available in the MRS Realizer manual.

10. Fault Removal and Maintenance

ℹ️ INFORMATION
The control unit is maintenance-free and may not be opened. If the control unit exhibits any damages on the casing, locking catch, seals, or flat plugs, it must be shut down.

Fault removal and cleaning work may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications) in idle condition. Remove the control unit for fault removal and cleaning. The control unit may never be connected or disconnected on-load or when live. After fault removal and cleaning, follow instructions in Chapter 7 Electric Installation.

⚠️ WARNING! SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components. Before performing any work, shut down the complete system and secure it against unintended restart. Before beginning fault removal and maintenance work, please make sure that the complete system and all parts of the system are in a safe state. Remove the control unit for fault removal and cleaning.

⚠️ CAUTION! DANGER OF BURNS!
The casing of the control unit may exhibit an elevated temperature. Please do not touch the casing and let all system components cool down before working on the system.

⚠️ CAUTION! DAMAGE OR SYSTEM FAILURE DUE TO IMPROPER CLEANING!
The control unit may be damaged due to improper cleaning processes, causing unintended reactions throughout the complete system. The control unit should not be cleaned with a high-pressure cleaner or a steam jet. Remove the control unit for fault removal and cleaning.

10.1. Cleaning

ℹ️ INFORMATION
Damages due to improper cleaning agents! The control unit may be damaged when cleaning it with high-pressure cleaners, steam jets, aggressive solvents, or scouring agents. Do not clean the control unit with high-pressure cleaners or steam jets. Do not use any aggressive solvents or scouring agents.

Only clean the control unit in a clean environment free of dust.

1. Please follow all safety instructions and deenergize the complete system.
2. Do not use any aggressive solvents or scouring agents.
3. Let the control unit dry.
4. Install the clean control unit pursuant to the instructions in Chapter 7 Electric Installation.

10.2. Fault Removal

1. Please ensure that fault removal measures are performed in a safe environment (horizontal and solid ground, no weather impact).
2. Please follow all safety instructions and deenergize the complete system.
3. Check that the system is intact.
• Remove damaged control units and dispose of in accordance with national environmental regulations.
4. Remove the mate plug and/or remove the control unit from the slot.
5. Check all flat plugs, connectors, and pins for mechanical damages due to overheating, insulation damage, and corrosion.
• Damaged control units and control units with corroded contacts must be removed and disposed of in accordance with national environmental regulations.
• Dry control unit and contacts in case of moisture.
• If needed, clean all contacts.

Faulty operations

In case of faulty operations, check the software, circuitry, and parameter settings.

11. Disassembly and Disposal

11.1. Disassembly

Disassembly and disposal may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications). Disassembly of the unit may only be performed in idle condition.

⚠️ WARNING! SUDDEN MOVEMENTS OF COMPLETE SYSTEM OR OF COMPONENTS
Danger due to unprotected moving components. Before performing any work, shut down the complete system and secure it against unintended restart. Before disassembling the system, please make sure that the complete system and all parts of the system are in a safe state.

⚠️ CAUTION! DANGER OF BURNS!
The casing of the control unit may exhibit an elevated temperature. Please do not touch the casing and let all system components cool down before working on the system.

Control unit with flat plugs (pursuant to ISO 7588-1: 1998-09)

1. Gently unplug the control unit vertically from the slot.

11.2. Disposal

Once the product is disused, it must be disposed of in accordance with the national environmental regulations for vehicles and work machines.