DEWERT OKIN MEGAMAT 4 Actuator Motor Linear Drive Installation Guide
- July 30, 2024
- DEWERT OKIN
Table of Contents
DEWERT OKIN MEGAMAT 4 Actuator Motor Linear Drive
Specifications
- Product: MEGAMAT 4
- Issue ID: 59400 9.0 V_2024
- Designated Use: Motorized adjustment of movable furniture parts
- Manufacturer: DewertOkin
- Drive Control Units: DewertOkin drive control units only
General Information
These instructions are intended for the manufacturer of the end product and
are not designed for passing on to the operator of the end product. About the
specialist information contained herein, these instructions can well serve as
a basis for drawing up the instructions for the end products.
It is essential to note the information contained in these instructions! In
doing so, you can prevent mistakes from being made in installing or connecting
the system which could result in
- injury and accidents as well as
- damage to the drive system or the end product.
Use only DewertOkin drive control units!
- The DewertOkin drive control unit incorporates an earth-free circuit that is isolated from the supply mains by reinforced insulation or double insulation.
DewertOkin accepts no liability for damage caused as a result of …
- non-observance of these instructions,
- alterations to the product not approved by DewertOkin or …
- the use of spare parts not manufactured or approved by DewertOkin- these may not ensure adequate safety!
Due to the policy of ongoing product improvement, DewertOkin reserves the right to carry out technical changes at any time without prior notification!
Designated Use
The MEGAMAT 4 drive system is designed for installation in end products…
- for the motorized adjustment of movable furniture parts using suitable fittings/mountings or mechanics.
The MEGAMAT 4 drive system is not intended for use…
- in an environment where inflammable or explosive gases or vapors (e.g. anesthetics) are likely to occur,
- in a damp environment, i.e. outdoors,
- in appliances used by small children or fragile persons,
- near young children.
Prerequisites
The installation steps described in these instructions must be performed by a suitable qualified or trained person.
- This being the case, you should never carry out this work by yourself unless you are a suitably trained person or
- you should entrust this work to a suitable qualified, skilled, or trained person only.
Conformity by EC Directives
The drive system is supplied ex-factory as a machine not ready for use by the
EC “Machinery” Directive. In other words, you may not put the drive system
into operation until you have met the safety objectives of the “Machinery”
Directive and issued a corresponding Declaration of Conformity!
The drive system with DewertOkin controls meets the safety objectives of the
EC Directives concerning “Low Voltage” and “Electromagnetic Compatibility
(EMC)”.
The drive is not a medical product if you install it into a medical device,
and manufacture in conformity with the EC Directive for “Medical Products” or
other regulations it is the responsibility of the manufacturer of the end
product. For this purpose, DewertOkin has additionally applied, fully or
partially, several standards from the medical products sector, to facilitate
the use of medical products (see page 18, Additional Information).
Getting to Know the System
The MEGAMAT 4 drive system is intended for the German market and complies with
the Law applicable in Germany in the implementation of relevant EC Directives.
About other variation options contact your after-sales service or take a look
at the current catalogue. We will be happy to assist you with any special
requests you may have.
MEGAMAT 4
b) Technical Data
- Rated voltage………………………………………………….: 24 – 29 V DC
- Power consumption with rated load……………………: max. 4.0 A DC (depending on application)
- permissible push force……………………………………..: max. 7000 N (depending on application)
- permissible pull force……………………………………….: max. 4000 N (depending on application)
- Operating mode1) with max. rated load……………….: Intermittent duty (AB) 2 min. ON /18 min. OFF
- Protection classification……………………………………: III
- Noise level…………………………………………………….. : 65 dB(A)
- Drive Type……………………………………………………….: Single drive
- Type of load……………………………………………………: Push; pull
- Stroke2)………………………………………………………….. : < 500 mm
- Adjustment Speed3)…………………………………………. : to 4.7 mm/s (depending on application)
- Protection category…………………………………………. : IP20; IPX4
- Colours…………………………………………………………..: grey; black
- Quick release “GQR”……………………………………….: to 3000 N (only for push or pull drives)
- Cable versions………………………………………………..: Cable for permanent mains installation or cable with attached plug
Dimensions and Weights
- Length x width x height of the drive……………………: min. 190 x 171.5 x 92 mm min. 236 x 171.5 x 92 mm (with “GQR”)
- Weight……………………………………………………………: approx. 2.5 kg (depending on application)
Ambient conditions for operation, storage, and transport
- Transport / storage temperature……………………….. : from -20 °C to +50 °C from -4 °F to +122 °F
- Operating temperature…………………………………….. : from +10 °C to +40 °C from +50 °F to +104 °F
- Relative humidity……………………………………………..: from 30% to 75%
- Air pressure……………………………………………………: from 800 hPa to 1060 hPa
- Altitude………………………………………………………….. : < 2000m
- Mode of operation: intermittent duty 2 min./18 min. This means that after the unit is operated with ist rated load for up to two minutes it must then be paused for 18 minutes. The system can malfunction if this pause is not observed!
- Data deviating from these standard values can be established after consultation and depending on the application and force.
- Adjustment speed: the speed at which the clevis can move under no load (the speed varies depending on the load).
Assembly of the MEGAMAT 4 Single Drive
Fitting
a) Installation (see illustration)
Caution!
Only ever connect or disconnect electrical components when they are voltage-
free.
- Push drive (2) into mounting (1) and fasten it there using BEK bolt (3) and secure with security clip (4).
- Now fasten stroke pipe clevis (5) with BEK bolt (8) and security clip (9) onto mounting (7).
- Now connect the drive to the DewertOkin control unit. Secure cable (6) to prevent it from being pulled out (please also refer to the Installation Instructions supplied with the DewertOkin control units).
Recommendation: Please bear in mind that installing mechanical limit stops into your end product considerably increases the safety standard.
Attention!
- For technical reasons or to save costs, mechanical limit stops are not always provided. In safety-critical drives, we therefore recommend using an additional safety limit switch which in the event of a defective top limit switch protects against dangerous excess travel and failure. The safety limit switch puts the drive permanently out of action as soon as any over-shooting of the regular limit switch takes place. The safety limit switch is integrated directly into the drive and does not require any additional fitting. However, this can increase the fitting dimension of the drive by 23 mm.
- In conjunction with the release (“GQR“, and „ER“ versions), mechanical limit stops must be installed in your end product at the top and bottom end-of-travel positions, to prevent mechanical damage to the drive system.
- The mechanical end stops and/or stroke travel limits of the application must be set to the dimensions of the extended and retracted positions of the actuator. Ensure that the mechanical end stops are not reached before the actuator is completely extended or retracted.
- The version of the MEGAMAT 4 drive system with a loose nut seat requires a fixed mechanical stop in the end product to prevent the stroke tube from being pulled out. This could otherwise damage the drive system.
b) Recommended installation position of the MEGAMAT 4 with GQR (quick release)
Installation errors – e.g. as a result of tolerances in the fitting – can have a considerable effect on the disengagement forces of the GQR. Incorrect installation can bring about a significant increase in the disengagement forces, thereby causing them to considerably exceed the specification.
Justify the fitting
The retainer for accepting the fittings of clevises must be in justify with
each other. If this is not the case, additional lateral forces act on the
drive unit. A significant increase in the withdrawal forces can occur as a
result of the fittings being misaligned by 1° or more. A fitting position of
almost 0° is ideal.
Effects of the fitting position
The disengagement force increases, and can exceed the specification quite
considerably, if e.g., the drive unit is subjected to a shear force from other
attachments.
Illustration: a horizontally fitted drive unit subjected to a shear force.
Recommended arrangement of the fittings
Besides precise alignment of the fittings, we recommend using only one fixing
bracket (a) at either side of the fittings. This measure reduces the risk of a
misalignment of the two fixing brackets which would cause the drive unit to
tilt. The actuator must always be fixed, so that it is restrained, but
adequately free to move on its mountings. The actuator must be fixed in such a
way that it is protected from twisting and deformation in all positions.
Fittings with two fixing brackets (b) can be used, but these must be precisely
aligned to ensure that the withdrawal force does not increase.
Fix the bracket on one side to utilize the elongated hole. This permits any possible differences in length between the fitting dimension of the drive and your application to be appropriately adjusted. Recommendation: the elongated hole (c) should offer at least 2mm play.
c) Electrical Connection
In the Operating Instructions to be issued by you, point out to the operator
that if leads, in particular the connection lead, are driven over they could
sustain damage. Mechanical loads should also be avoided.
When routing the leads make sure that they…
- cannot get caught up or trapped,
- are not subjected to mechanical loads (i.e. do not pull, apply pressure, or bend),
- cannot get damaged in any other way.
D) Dismantling
Operate the furniture to travel to the starting position, then isolate
drive (2) from the DewertOkin controls. When removing security clip (4, 9) and
BEK bolts (3, 8), it is important to support drive (2), as this is released
instantly
e) Quick release „GQR“ (optional)
In the event of a power failure, the drive can be reset via the optional
quick release. Actuating the quick release causes the drive to travel back to
the starting position.
Please note:
- GQR (Quick Release) features a high-quality gear system that can be actuated at any time, also in the loaded state.
- To allow actuation, a suitable commercially available Bowden cable (2) is provided. This is fastened in the Bowden cable receptacle (1) (not part of the supply package).
- Thread the Bowden cable fully through the groove in the Bowden cable receptacle (1) and into the cable bolt at the top, then secure the Bowden cable in place with the locking pin (3).
- The tension of the Bowden cable should not be too tight, otherwise, this could result in unintentional disengagement or cause the clutch in the GQR’s gear system to slip which in turn can lead to damage.
- The Bowden cable fixture (1) must be pulled until it meets the end stop (up) to ensure that the GQR functions properly. The clutch on the GQR opens with a pull force of 110 N or greater. The pull force must not exceed 250 N; otherwise, the GQR can be damaged.
- A spring (4) must be built into the Bowden cable mechanism to prevent damage to the GQR and to ensure proper function.
- The Bowden cable must now be tested to ensure that it is in perfect working order.
Attention!
- The GQR system is designed as a standard feature to be used for applications in the drive’s push direction. When actuating the GQR, it is therefore important to ensure that the manual adjustment takes place in the intended direction only.
- Non-observance can cause the GQR to sustain damage.
- Moreover, another standard feature of the GQR is trap protection for emergencies. Non-designated actuation of the trap protection (operating the quick release without actuating the Bowden cable in the opposite direction to the designated direction) leads to increased wear and premature failure of the system.
- Please draw attention to this in your operating instructions.
Operation
For drawing up the Operating Instructions for the end product, you can use the specialist information described herein. Please bear in mind that these instructions are intended for you as a specialist and not for the possibly non-technically trained operator of the end product.
Attention
- The electric adjustment drive is not intended for use by small children or the unsupervised infirm.
- The electric adjustment drive is not a toy for children to play with.
a) Prerequisites
- The MEGAMAT 4 drive system is only intended for use with corresponding DewertOkin control units.
- In this connection please also follow the installation instructions supplied with the accompanying control unit.
b) Quick release “GQR”
If you have acquired a MEGAMAT 4 drive system with quick-release „GQR“,
please note the following:
- To ensure that the function of the “mechanical quick release, GQR” is reliable and remains in the same constant quality, the actuator has to be completely clean. We therefore recommend an optical check (see Chapter 5b) or eventual cleaning including a final check of the quick release and the integration in the service plan of the application.
- A quick release „GQR“ enables you to move the drive manually in an emergency.
- Actuate the quick-release „GQR“ and move the drive into the desired position.
Caution: Depending on the version, it is possible that the application could lower itself under its weight. If the application is not possible to sink with your weight, you must press down the right side of the application.
- When restarting the drive system following the actuation of the quick release „GQR“, this automatically re-engages. The drive system is now ready for operation.
c) Maintenance and Repairs
At regular intervals carry out the inspections. The recommended inspection period is: 6 months
In addition to the above, the following checks should be carried out at shorter intervals:
-
Regular visual checks for damage of all kinds
Check the housing for cracks and fractures and the connection lead for signs of pinching and shearing-off. Also check the strain relief with kink protection, in particular after each case of mechanical loading. Any damaged connection leads of equipment must be replaced by the manufacturer or persons qualified to do so (see page 3) to exclude hazards. -
Regular functional testing of the “quick release, GQR” by actuating the Bowden cable, as described on pages 9, 10, and 11.
-
Regular visual checks of the “Quick Release, GQR” through check for completeness and correct seating of the seals to be found in the GQR.
-
Regular visual checks of the “Quick Release, GQR”, to ensure that the function is reliable and remains in the same constant quality, the actuator has to be completely clean. We therefore recommend an optical check or eventually cleaning including a final check of the quick release and the integration in the service plan of the application.
-
Regular checks of the Bowden cable of the “GQR quick release” at intervals to ensure that it is functioning correctly. If necessary, re-adjust!
-
Check the limit switches by using the DewertOkin control unit to make the drive travel to the end-of-travel positions.
Caution: For Your Safety!
- Shutdown in an emergency is achieved by pulling the mains plug out of the drive controls!
- The mains plug must therefore be accessible at all times when the system is in operation to ensure it can be quickly pulled out of the wall socket in an emergency.
- Movement of the drive takes place via a stroke pipe. Please bear this in mind when designing your product:
- After installing the MEGAMAT 4 make sure that no shearing or trap/crush zones are accessible from the outside.
- In the Operating Instructions to be drawn up by yourselves, you must draw the operator’s attention to the points mentioned here.
Type Label (Example)
Each drive component carries an identification plate giving the exact model,
item number, and technical specifications (see the following figure as an
example).
The MEGAMAT 4 is designated on the type plate as MEGAMAT MEZ.
Troubleshooting
The following table has been developed to help you detect and eliminate common faults and errors. If you come across a fault/error that is not listed here, please contact your supplier. All of these faults/errors may only be investigated and rectified by specialists holding the qualifications as described.
Cleaning
- The MEGAMAT 4 drive system has been designed to facilitate cleaning for the user, and this has been made even easier thanks to the large number of flat surfaces.
- The MEGAMAT 4 drive system should be cleaned with a household cleaning agent suitable for plastic using a damp cloth. Always note the instructions provided by the manufacturer of the respective cleaning agent used.
Before cleaning, always pull out the mains plug of the controls!
- Never clean the drive system in a wash tunnel or with a high-pressure cleaner nor spray liquids onto it. You otherwise risk damaging the equipment!
- When cleaning take care not to damage the drive system’s connection lead!
- In its basic version, the drive system meets the requirements of the IP20 protection category. You have the option of upgrading the protection category up to IPX4.
- Do not use any solvents such as benzene, alcohol, or similar substances.
Disposal
- The MEGAMAT 4 drive consists of electronic components, cables, and metal and plastic parts. You should observe all corresponding national and regional environmental regulations when disposing of the MEGAMAT 4 drive.
- The disposal of the product is regulated in Germany by Elektro-G, internationally by the EU Directive 2012/19/EC (WEEE), or by any applicable national laws and regulations
The MEGAMAT 4 drive system may not be disposed of with the normal household waste!
Declaration of Incorporation
According to Appendix II of the EU Machinery Directive 2006/42/EC The
manufacturer:
- DewertOkin GmbH
- Weststraße 1
- 32278 Kirchlengern
- Deutschland – Germany
declares that the incomplete machines described below
MEGAMAT MEZ, MEGAMAT ME(n)1)
complies with the following basic requirements of the Machinery Directive
(2006/42/EC): Sections:
1.1.3; 1.3.3; 1.3.4; 1.3.7; 1.5.1; 1.5.2; 1.5.5; 1.5.6; 1.5.7; 1.5.8; 1.5.9;
1.5.10; 1.5.13
You may only operate this incomplete machine after you have confirmed that the
end product (into which this machine will be installed) complies with the
Machinery Directive 2006/42/EC.
On reasonable request, the manufacturer is obliged to send the special documentation accompanying the partially completed machinery in electronic form to the appropriate national institution. The special technical documents corresponding to the machine have been created according to Appendix VII, part B.
For the preparation of the technical documentation is authorized:
- DewertOkin GmbH
- Weststraße 1
- 32278 Kirchlengern
- Tel.: 05223 979-0
- Deutschland – Germany
Kirchlengern, Germany 24 March 2020
EU Declaration of Conformity
- In compliance with Appendix IV of the EMC-Directive 2014/30/EU
- In compliance with Appendix IV of the LVD-Directive 2014/35/EU
- In compliance with Appendix VI of the EU RoHS Directive 2011/65/EU (incl. Commission delegated Directive (EU) 2015/863)
The manufacturer:
- DewertOkin GmbH
- Weststraße 1
- 32278 Kirchlengern
- Deutschland – Germany
declares that the following product
MEGAMAT MEZ, MEGAMAT ME(n)1) with DewertOkin Control Unit
- meets the requirements of the following EU directives:
- Electromagnetic Compatibility Directive 2014/30/EU
- Low Voltage Directive 2014/35/EU
- COMMISSION DELEGATED DIRECTIVE (EU) 2015/863 of 31 March 2015 amending Annex II to Directive 2011/65/EU of the European Parliament and of the Council as regards the list of restricted substances.
Applied standards:
- EN 60335-1:2012/A11:2014
- EN 55014-1:2006/A1:2009/A2:2011
- EN 55014-2:1997/A1:2001/A2:2008
- EN 61000-3-2:2014
- EN 61000-3-3:2013
- EN 62233:2008
This declaration of conformity is no longer valid if constructional changes are made that significantly change the drive system (i.e., which influences the technical specifications found in the instructions or the intended use)!
Kirchlengern, Germany 24 March 2020
Additional information
MEGAMAT 4 (MEZ) drive system
The following standards and norms were used in the versions with at least IPX4
and higher according to
- EN 60601-1:2006 + A1:2013, IEC 60601-1:2005 + A1:2012 (short description: Edition 3.1), Medical electrical equipment.
- EN 60601-1-2:2015, IEC 60601-2-2:2014 (short description: Edition 4.0), EMC
- IEC/EN60601-1, Section 4 General requirements
- IEC/EN60601-1, Section 6 Classification
- IEC/EN60601-1, Section 7.1 Labelling – general
- IEC/EN60601-1, Section 7.2 Labelling – inscriptions
- IEC/EN60601-1, Section 8 Protection against Electrical danger
- IEC/EN60601-1, Section 11.1 Overheating protection
- IEC/EN60601-1, Section 11.2 Fire prevention
- IEC/EN60601-1, Section 11.3 Design requirements for fire-resistant housing
- IEC/EN60601-1, Section 13 Dangerous situations and error conditions
- IEC/EN60601-1, Section 16.6 Leakage current
- IEC/EN60601-1, Section 17 Electromagnetic compatibility
- IEC/EN60601-2-52, Protection against water ingress: only applied
- Section 201.11.6.5.101 for at least IPX4
- IEC/EN60601-2-52, Section 201.9.8.3.2 Static load
MORE INFORMATION
DewertOkin GmbH
- ADDRESS: Weststraße 1 32278 Kirchlengern, Germany
- Phone: +49 (0)5223/979-0
- Fax : +49 (0)5223/75182
- http://www.dewertokin.de
- Info@dewertokin.de
FAQ
- Q: Can I use non-DewertOkin drive control units with the MEGAMAT 4 system?
- A: No, it is recommended to use only DewertOkin drive control units to ensure the proper functioning and safety of the system.
- Q: What should I do if I encounter a technical issue with the MEGAMAT 4 system?
- A: Refer to the troubleshooting section in the user manual for guidance on common issues. If the problem persists, contact DewertOkin customer support for assistance.
References
Read User Manual Online (PDF format)
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