Frequency Monitors

Contact Data

Manufacturer: MRS Electronic GmbH & Co. KG

Address: Klaus-Gutsch-Str. 7, 78628 Rottweil, Germany

Telephone: +49 741 28070

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

E-mail: info@mrs-electronic.com

Product Information

Product designation: Frequency Monitors

Types:

• 1.026.1 Frequency Monitor 12 V
• 1.026.2 Frequency Monitor 24 V
• 1.026.3 Frequency Monitor 9-30 V

Serial Number: see type plate

Document Information

Name: Frequency_Monitors_Ol1_1.1

Version: 1.1

Date: 12/2024

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. Use is currently limited to the European Economic Area (EEA). For use in other areas, market access research must be carried out beforehand.

1. User Information

1.1. About These Operating Instructions

MRS Electronic GmbH & Co. KG (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, please contact MRS.

Storage and transfer of the operating instructions

These instructions and all other product-related documentation must always be kept on hand and 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 can assess tasks and recognize dangers due to their training, knowledge, experience, and understanding of relevant standards and regulations.

Validity of the operating instructions

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

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

Warning Information

The operating instructions contain warning information before a call to action, including risks 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. 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 leading to serious injury or death if not averted.

WARNING! Designates a possible threat leading to serious injury or death if not averted.

CAUTION! Designates a potentially dangerous situation leading to mild or medium property damage or physical injury if not averted.

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

Symbols used in the operating instructions

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

1.2. Copyright

These operating instructions contain copyright-protected information. Contents or excerpts may not be copied or reproduced 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

This chapter includes all information for safely installing and operating the product.

2.1. Hazards

The frequency monitor is constructed with the newest technology and recognized safety-relevant regulations. Danger for persons and/or property may arise from improper use. Non-compliance with work safety rules may result in damages. This section describes possible hazards 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 may endanger people and machines. Please ensure the frequency monitor is equipped with the proper software and that circuits and parameter settings are compliant with the hardware.

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.

Hazards (Continued)

Touching of contacts and pins

⚠️ WARNING! DANGER DUE TO MISSING PROTECTION OF TOUCHING!

The protection of touching contacts and pins must be ensured. Use the watertight socket including supplied protection caps as per the accessories list in the data sheet 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. Use the watertight socket including supplied protection caps as per the accessories list in the data sheet to ensure compliance.

Elevated temperature

? CAUTION! DANGER OF BURNS!

The casing may exhibit an elevated temperature. Do not touch the casing and let all system components cool down before working on the system.

2.2. Staff Qualifications

These instructions refer to employee qualifications for installation and maintenance. The three groups are:

• Specialists/Experts
• Skilled persons
• Authorized persons

This product is not suitable for persons (including children) who are mentally or physically disabled or lack experience/knowledge, unless supervised or trained by a responsible person.

Specialists/Experts

Specialists and experts 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.

Staff Qualifications (Continued)

Skilled persons

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

Authorized persons

Authorized persons are permitted to perform work due to legal regulations or approval by MRS for specific tasks.

2.3. Obligations of the Manufacturer of Complete Systems

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

Manufacturer considerations when using the frequency monitor:

• Wiring suggestions from MRS do not constitute systematic responsibility for complete systems.
• Safe operation cannot be guaranteed for 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 power supply, final stages, and external sensor supply are shut down jointly when releasing the frequency monitor.
• Frequency monitors without factory-made software programmed more than 500 times may not be used in complete systems.

Risk Reduction for Manufacturers

The risk of accidents is reduced if the manufacturer observes 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 frequency monitor and the complete system.
• Responsibilities for assembly must be clearly specified. Assembly and maintenance staff must be regularly instructed.
• Any work on electric energy sources is associated with dangers. Persons unfamiliar with these devices 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 frequency monitors by MRS Electronic are relays that switch connected loads on or off when a predefined frequency threshold is exceeded or not reached.

4. Transport and Storage

4.1. Transport

The product must be packed in suitable transport packaging and secured against sliding. During transport, statutory provisions regarding securing loads must be observed.

If the frequency monitor falls down, 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 which can be locked. Please observe the permissible environmental conditions in the data sheet.

5. Intended Use

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

⚠️ WARNING! DANGER DUE TO UNINTENDED USE!

The frequency monitor 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 frequency monitor 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.
• Conversions and changes of the frequency monitor.
• Use of the frequency monitor or parts thereof which are damaged or corroded, including 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 frequency monitor 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 frequency monitor will be impaired, and the warranty claim is void.

6. Assembly

Assembly work may only be performed by qualified staff (see Chapter 2.2 Staff Qualifications). The frequency monitor may only be operated after having installed in a fixed location.

ℹ️ INFORMATION: If the frequency monitor falls down, 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 to subject the frequency monitor to as low a mechanical and thermal load as possible. The frequency monitor may not be exposed to chemicals.

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

6.2. Mounting Position

Mount the frequency monitor so that the connectors point downwards. This ensures possible condensation water can flow off. Individual seals of the cables/wires prevent water entry. Compliance with IP protection class and protection against touching must be ensured by using appropriate accessories.

6.3. Fastening

Frequency monitor with flat plugs (pursuant to ISO 7588-1: 1998-09)

Frequency monitors 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). Installation must be performed in idle condition. The frequency monitor must 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 frequency monitor is connected correctly. Check the pin assignment.

Frequency monitor with flat plugs (pursuant to ISO 7588-1: 1998-09)

1. Ensure the frequency monitor is inserted into the correct slot. Follow the connection diagram and documents of the complete system.
2. Ensure all flat plugs of the frequency monitor are free of dirt and moisture.
3. Ensure the slot does not exhibit any damages due to overheating, insulation damages, and corrosion.
4. Ensure all sockets of the frequency monitor are free of dirt and moisture.
5. If the frequency monitor is used in a vibrating environment, secure it by a latch to prevent it from shaking loose.
6. Plug the frequency monitor 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 fuse rating information, refer to the data sheet.

• Wiring must be connected with utmost diligence.
• All cables and their laying must comply with applicable regulations.
• Connected cables must be suitable for temperatures min. 10 °C above the max. permitted environmental temperature.
• Cables must comply with requirements and wire cross-sections specified in the technical data.
• When laying cables, exclude the possibility of mechanical damages to wire insulation on sharp edges or moving metal parts.
• Cables must be laid so they are strain-relieved and friction-free.
• Cable routing must ensure the cable harness moves identically to the direction of movement of the controller/plug. 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 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, ensure 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 (for units supplied 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 an authorized partner for the warranty to remain valid.

ℹ️ INFORMATION: Frequency monitors 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 frequency monitor is maintenance-free and may not be opened. If the frequency monitor exhibits 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 frequency monitor for fault removal and cleaning. Never connect or disconnect the unit on-load or when live. After work completion, 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, ensure the complete system and all parts are in a safe state.
• Remove the frequency monitor for fault removal and cleaning.

? CAUTION! DANGER OF BURNS!

The casing may exhibit an elevated temperature. 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 frequency monitor may be damaged by improper cleaning processes, causing unintended reactions. Do not clean with a high-pressure cleaner or steam jet. Remove the frequency monitor for fault removal and cleaning.

10.1. Cleaning

ℹ️ INFORMATION: Damages due to improper cleaning agents! The frequency monitor may be damaged by high-pressure cleaners, steam jets, aggressive solvents, or scouring agents.

• Do not clean the frequency monitor with high-pressure cleaners or steam jets. Do not use aggressive solvents or scouring agents.

Only clean the frequency monitor in a clean environment free of dust.

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

10.2. Fault Removal

1. Ensure fault removal measures are performed in a safe environment (horizontal and solid ground, no weather impact).
2. Follow all safety instructions and deenergize the complete system.
3. Check that the system is intact.
4. Remove damaged frequency monitors and dispose of them in accordance with national environmental regulations.
5. Remove the mate plug and/or remove the frequency monitor from the slot.
6. Check all flat plugs, connectors, and pins for mechanical damages due to overheating, insulation damage, and corrosion.
7. Damaged frequency monitors and those with corroded contacts must be removed and disposed of in accordance with national environmental regulations.
8. Dry the frequency monitor and contacts in case of moisture.
9. 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, ensure the complete system and all parts are in a safe state.

? CAUTION! DANGER OF BURNS!

The casing may exhibit an elevated temperature. Do not touch the casing and let all system components cool down before working on the system.

Frequency monitor with flat plugs (pursuant to ISO 7588-1: 1998-09)

1. Gently unplug the frequency monitor 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.