SKF CAHB-20E Installation, Operation And Maintenance Manual
  1. Manuals
  2. Brands
  3. SKF Manuals
  4. Controller
  5. CAHB-20E
  6. Installation, operation and maintenance manual

SKF CAHB-20E Installation, Operation And Maintenance Manual

Linear actuator
Hide thumbs
Table of Contents

Advertisement

Quick Links

Installation, operation and maintenance manual
CAHB-20 series
Linear actuator CAHB-20E, CAHB-21E and CAHB-22E
WARNING

Read this manual before installing, ope-
rating or maintaining this actuator. Fai-
lure to follow safety precautions and
instructions could cause actuator failure
and result in serious injury, death or
property damage.

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the CAHB-20E and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for SKF CAHB-20E

Summary of Contents for SKF CAHB-20E

  • Page 1 Installation, operation and maintenance manual CAHB-20 series Linear actuator CAHB-20E, CAHB-21E and CAHB-22E WARNING  Read this manual before installing, ope- rating or maintaining this actuator. Fai- lure to follow safety precautions and instructions could cause actuator failure and result in serious injury, death or...

  • Page 3: Table Of Contents

    Contents 1 General information ....... . 8 Maintenance 1.1 Information on this manual ......8.1 Spare parts .

  • Page 5: Information On This Manual

    1 General information 1.1 Information on this NOTE manual Emphasizes useful hints and recom- mendations as well as information for efficient and trouble-free operation. This manual provides important information on how to work with the actuator safely and efficiently. The manual is part of the actuator, must always be kept in the actuator’s direct proximity and should be available for the personnel at any time.

  • Page 6: Limitation Of Liability

    In case the actuator is customised, the actual product delivered may be different from what is described in the manual. In this case, ask SKF for any additional instructions or safety precautions relevant to these actuators. We reserve the right to make technical modifications to the actua-...

  • Page 7: Warranty Terms

    The applicable and effective warranty terms are those contained in the manufacturer’s terms and conditions of sale. 1.5 Customer service SKF Customer Service is always available to provide technical infor- mation and answer questions. The contact information for SKF Customer Service can be found...

  • Page 8: Safety

    2 Safety 2.1 Limitation of liability This chapter provides an overview of important safety precautions and information necessary for safe and trouble-free installation, operation and maintenance. Disregarding this Manual and safety precautions specified therein may result in considerable danger and possible serious injury or death.

  • Page 9: Qualifications

    In addition to the safety instructions in this Manual, the owner or processor must do the following concerning these safety and acci- dent prevention guidelines and environmental precautions regula- tions applicable to the site of the system’s installation: • Inform themselves of applicable industrial safety precautions and determine additional hazards that arise due to the specific working conditions prevailing at the site where the actuator is installed using risk assessment.

  • Page 10: Specific Dangers

    • A professional electrician based on his/her professional training, know-how and experience as well as knowledge of the applicable standards and regulations is able to perform work on electrical systems and to detect and avoid possible dangers on his/her own. The professional electrician has been trained for the special location where he/she works and knows the relevant standards and regulations.

  • Page 11: Safety Equipment

    Moving components WARNING  Danger of injury caused by moving components! Rotating and/or linearly moving components can cause severe injury. Therefore: • Do not work on or place any of your body, hands, or arms near moving components. 2.3 Safety equipment WARNING ...
  • Page 12 The following safety features may have been installed: A thermal switch is integrated into the motor inside to prevent Thermal switch damage from overheating. If overheating occurs when the actuator is operating (over specification), the switch would be activated, the power would be cut-off;...

  • Page 13: Changes And Modifications On The Actuator

    2.4 Changes and modifications on the actuator To avoid hazardous situations and to ensure optimal performance, do not make any changes or modifications to the actuator unless they have been specifically authorized by SKF.

  • Page 14: Technical Data

    3 Technical data NOTE The technical data (dimensions, weight, output, connection val- ues etc.) can be found in the enclosed drawings and data sheets (refer to chapter 11 Appendix). 3.1 Operating conditions Environment Information Value Unit Temperature range –40 to +85 °C Relative atmospheric humidity, up to 96...

  • Page 15: Operating Voltages And Limits

    3.2 Operating voltages and limits The operating voltages and the limits for standard version, including when PWM is used for speed ramp up refer to: 12 V DC version: supply voltage • For actuator: 12VDC ± 20% • For Encoder: 4-20VDC •...

  • Page 16: Structure And Function

    4 Structure and function 4.1 Overview CAHB- 20 E Include 3 types outline. CAHB-20 E without feedback Fig 2 1 Front hinge head 2 Push tube 3 Guiding tube (Steel tube) 4 Motor 5 Cable 6 Rear hinge head 7 Gearbox CAHB-20 E with feedback Fig 3 8 Middle housing...
  • Page 17 CAHB-21 E and 22 E Include 3 types outline. CAHB-21 E and 22 E without feedback Fig 5 1 Front hinge head 2 Push tube 3 Guiding tube (Al alloy tube) 4 Motor 5 Cable 6 Rear hinge head 7 Gearbox CAHB-21 E and 22 E with feedback Fig 6 8 Middle housing...

  • Page 18: Brief Description

    4.2 Brief description Overview Fig 8 This actuator is to be used exclusively for installation into a dynamic centric-compression or tensile-loaded lift. The linear actuator consists of a motor part (4), a gear unit (7) and a linear unit (3), connected with each other by a bayonet joint. The actuator consists of a direct current motor with helical gear which sets in motion a gear transmission system.

  • Page 19: Special Features

    4.3 Special features Mechanical overload protection The actuator contains a mechanical overload protection unit (clutch). This overload protection unit will activate if the linear unit of the actuator overloads. This activation will avoid to push or pull over the maximum force defined on the datasheet and will protect the motor and gear unit from being damaged.

  • Page 20: Connection

    CAHB-2… linear actuators. 4.6.1 Limit switch The limit switch makes it possible to control the stroke of the linear unit by internal setting. Contact the SKF to adjust the setting of limit switch. Remark: Limit switch is not available for CAHB-20...

  • Page 21: Potentiometer

    4.6.2 Potentiometer The potentiometer provides a signal indicating the postion of the linear actuator. The electrical specification as on the datasheet. • Linear actuator with potentiometer unit: colours of wire are white, green and brown († Fig 11). Potentiometer Fig 11 Retract Extend Limit + POT:...

  • Page 22: Encoder

    4.6.3 Encoder Dual hall sensor for incremental position feedback. It outputs signals when the actuator is moving outwards and inwards respectively. The output signals, channel 1 and 2, are ±90°, see the figure below. The electrical specification as on the data sheet. The supply voltage to the encoder must be in the range 4 to 20 V DC) Encoder...

  • Page 23: Transport, Packaging And Storage

    5 Transport, packaging and storage 5.1 Safety information for the transport Improper transport CAUTION  Significant actuator damage can occur if not properly trans- ported, unpacked and stored. Therefore: • Proceed carefully during the unloading of the packaged items, during the delivery as well as during the transport to its final destination and comply with the symbols and information shown on the packaging.

  • Page 24: Return To The Manufacturer

    5.1.2 Return to the manufacturer Proceed as follows for the return transport: 1 Dismantle the actuator if necessary (refer to chapter 10 Dismantling). 2 Pack the actuator in its original packaging. Follow storage condi- tions (refer to chapter 5.2 Storage). 3 Send to manufacturer.

  • Page 25: Storage

    5.2 Storage Pack the actuator in its original packaging for storage. • Do not store outside. • Dry and dust-free storage. • Keep away from any aggressive media. • Protect from UV radiation. • Avoid mechanical vibrations. • Storage temperature: –55 to 90 °C. •...

  • Page 26: Installation And First Operation

    6 Installation and first operation Authorized personnel • The installation and first start of operation may only be conducted by qualified personnel. • Work on the electric system may only be performed by trained electricians. WARNING  Electrical equipment Electric shock and moving parts hazards Serious injury or death can be caused by touching live electrical components and by unexpected movement of the actuator.

  • Page 27: Installation Location

    6.1 Installation location Adhere to the technical data in accordance with operating conditions (refer to chapter 11 Appendix). Install in a location where the actuator is not exposed to strong UV radiation or corrosive or explosive air media. 6.2 Installation The CAHB-2…...
  • Page 28 2 Ensure that the applied force on the fastening bolts is always cen- trically directed on the actuator († Fig 13). Fig 13 Correct installation Issues schemes: Parallell issue Misaligned issue WARNING  Risk of injury and material damage due to incorrect installation! During installation, do not subject the actuator to side-impact or to turning forces.

  • Page 29: Inspections Prior To First Operation

    6.3 Inspections prior to first operation Prior to the first operation, a professional electrician must perform and document the following tests and readings: • Check visual condition • Function check of operating features and safety features • Reading of protective conductor resistance •...

  • Page 30: Wiring Scheme For No Limit Switch Option

    6.4.2 Wiring scheme: Actuator without L S Actuator with L S Cable Red + EXT VB +/– Cable Red + EXT VB +/– Limit Motor Cable Black + RET Motor VB –/+ Cable Black + RET VB –/+ switch contol –...

  • Page 31: Operation

    7 Operation 7.1 Safety DANGER  Risk of crushing! Actuator may cause serious injuries while moving. Therefore: • Ensure that there are no persons in the stroke area of the actuator while in operation. • Take note of maximum permissible operating data for the actuator (refer to data sheets in chapter 11 Appendix).

  • Page 32: Action Before Operation

    CAUTION  Material damage through overheating! Therefore: • Only use control integrated thermal switch. • Never exceed nominal load (refer to technical data in chapter 11 Appendix). • Always adhere to idle times and operating times (refer to technical data in chapter 11 Appendix). 7.2 Action before operation Ensure that there are no persons or objects in the stroke area of the actuator.

  • Page 33: Normal Operation

    CAHB-2…linear actuator via the hinge head. For all CAHB-20E and the CAHB-21E and CAHB-22E without Limit switches option, the clutch will activate if the linear actuator is completely extended or retracted. In case of optional limit switches or...
  • Page 34 CAUTION  Material damage due to incorrect set up of the limit switch! Therefore: • Select limit switch or other electrical component that is ade- quate for the rating voltage and current of linear actuator (refer to chapter 3 Technical data). •...

  • Page 35: Disengagement In Case Of Emergency

    7.4 Disengagement in case of emergency In hazardous situations, all movements of the actuator must be stopped as quickly as possible and the power supply must be turned off. Proceed as follows in hazardous situations: 1 Immediately engage emergency shut-off, if present, or cut off power for actuator.

  • Page 36: Maintenance

    8 Maintenance Personnel • The maintenance work described herein can be performed by the operator unless otherwise indicated. • Some maintenance tasks should only be executed by especially trained, qualified personnel, or exclusively by the manufacturer; specific reference will be made in each case in the description of the respective maintenance task.

  • Page 37: Maintenance Plan

    Therefore: • Use only genuine spare parts from the manufacturer. • Spare parts in/on the actuator may only be replaced by SKF. The actuator must be dismantled and sent to the manufacturer. The address is listed on the cover back.

  • Page 38: Maintenance Work

    8.3 Maintenance work 8.3.1 Cleaning To be performed by operator CAUTION  Damage due to incorrect cleaning! Therefore: • Do not use any aggressive cleaning agents. Water used forcleaning including the chemical additives must be pH-neutral. • Liquids must not touch the actuator during the retraction or extension.

  • Page 39: Check Of Visual Condition

    3 Check stainless steel tube for scratches and indentations 3 Notify processor or SKF in case of damage 4 If there is no damage and the processors/manufacturer has not communicated any concerns, reconnect the actuator to the power supply.

  • Page 40: Malfunctions

    9 Malfunctions The following chapter describes potential causes for malfunctions and the work that is necessary to restore operation. In the event of frequent malfunctions, shorten the maintenance intervals. Contact the manufacturer concerning malfunctions which are not solved by the following suggestions. Personnel •...
  • Page 41 DANGER  Optional devices Risk of injury and material damage due to incorrect repair of malfunction Therefore: • Never loosen the screws on the linear actuator or try to open- the linear actuator. • In the event of a malfunction that cannot be fixed by following Malfunction table (†...

  • Page 42: Malfunction Table

    9.1 Malfunction table Symptom Checkpoint Possible cause Action (Possible Solution) Actuator w ill not extend/retract No voltage or amp draw No power given Check power supply Lack of plug contact or plug has not Check plug and insert properly been inserted properly Defective cable or power plug (may Send actuator for repair be damaged)

  • Page 43: Start Of Operation After Fixing Malfunction

    9.2 Start of operation after fixing malfunction After the malfunction has been fixed, perform the steps from the chapter Installation prior to restart.

  • Page 44: Dismantling

    10 Dismantling Personnel • The dismantling may only be carried out by specifically qualified personnel. • Work on the electric system may only be performed by profes- sional electricians. DANGER  Electrical equipment Electric shock and moving parts hazards Serious injury or death can be caused by touching live electrical components and by unexpected movement of the actuator.

  • Page 45: Dismantling Of Cahb-20A

    10.1 Dismantling 10.1.1 Dismantling of CAHB-20 series 1 Separate actuator from energy supply (refer to chapter 7.4 Disen- gagement in case of emergency). 2 Secure elements of the application in such a fashion, that no loads can impact the hinge heads. 3 Loosen and remove fastening bolts from the mounting strap of the hinge heads.

  • Page 46: Appendix

    11 Appendix Technical data sheets Please refer to the following document: Actuator range catalogue PUB MT/P1 18098 EN...
  • Page 47 • Corrosion protection and stainless steel tube • Manual override option • Virtuality maintenance free Technical data Designation Unit CAHB-20E / 12 V CAHB-20E / 24 V Performance data Rated Push Force 1 500 2 500 4 500 1 500...
  • Page 48 Performance diagrams Speed and load Current load Static load Current consumption [A] Speed [mm/s] 12 V DC Load [kN] 24 V DC Load [kN] Load [kN] Stroke length [mm] Rated push force 1 500 Ultimate CAHB-20-xxE (push) Rated push force 2 500 Ultimate CAHB-20-xxE (pull) Rated push force 4 500 Recommended CAHB 20-xxE (push)
  • Page 49 Electrical specifications Wire connection with no signal Feedback resolution list Wire no. Colour Application Actuator type Hall sensor resolution POT resolution [pulses/mm] [ohm/mm] Motor power(+)=> Extension, (–)=> Retraction CAHB-20…E 2,76 59,06 if S = 050-125 Black Motor power(–)=> Extension, 29,53 if S = 126-250 (+)=>...
  • Page 50 Ordering key C A H B 2 0 – E – – B T – 0 0 0 Type Voltage 12 V DC 24 V DC 12 V DC with manual override 24 V DC with manual override Load 1 500 N 2 500 N 4 500 N Design...
  • Page 51 CAHB-21E Linear actuator Benefits • High productivity • Reliability and safety • Save development time • Cost effectiveness Features: • High holding force • High speed • Mechanical overload protection • Enhanced ingress protection • Corrosion protection and stainless steel tube •...
  • Page 52 Performance diagrams Speed and load Current load Static load Current consumption [A] Speed [mm/s] 12 V DC 24 V DC Load [kN] 12,5 Load [kN] Load [kN] Stroke length [mm] Ultimate CAHB-21-xxE (push) Rated push force 1 500 Ultimate CAHB-21-xxE (pull) Rated push force 2 500 Recommended CAHB-21-xxE (push) Rated push force 4 500...
  • Page 53 Electrical specifications Wire connection with no signal Feedback resolution list Wire no. Colour Application Actuator type Hall sensor resolution POT resolution [pulses/mm] [ohm/mm] Motor power(+)=> Extension, (–)=> Retraction CAHB-21…E 1,56 33,33 if S = 050-222 Black Motor power(–)=> Extension, 16,67 if S = 223-444 (+)=>...
  • Page 54 Ordering key C A H B 2 1 – E – – B T – 0 0 0 Type Voltage 12 V DC 24 V DC 12 V DC with manual override 24 V DC with manual override Load 1 500 N 2 500 N 4 500 N Design...
  • Page 55 CAHB-22E Linear actuator Benefits • High productivity • Reliability and safety • Save development time • Cost effectiveness Features: • High force • High speed • High holding force • Mechanical overload protection • Enhanced ingress protection • Corrosion protection and stainless steel tube •...
  • Page 56 Performance diagrams Speed and load Current load Static load Current consumption [A] Speed [mm/s] 12 V DC 24 V DC Load [kN] 12,5 Load [kN] Load [kN] Stroke length [mm] Ultimate CAHB-22-xxE (push) Rated push force 2 300 Ultimate CAHB-22-xxE (pull) Rated push force 3 500 Recommended CAHB 22-xxE (push) Rated push force 6 800...
  • Page 57 Electrical specifications Wire connection with no signal Feedback resolution list Wire no. Colour Application Actuator type Hall sensor resolution POT resolution [pulses/mm] [ohm/mm] Motor power(+)=> Extension, (–)=> Retraction CAHB-22…1E 30 if S = 050-254 Black Motor power(–)=> Extension, CAHB-22…2E 15 if S = 255-508 (+)=>...
  • Page 58 Ordering key C A H B 2 2 – E – – B T – 0 0 0 Type Voltage 12 V DC 24 V DC 12 V DC with manual override 24 V DC with manual override Load 2 300 N 3 500 N 6 800 N 10 000 N...
  • Page 59 Reprint from PUB MT/P1 18098 EN...
  • Page 60 ® SKF is a registered trademark of the SKF Group. © SKF Group 2018 The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.

This manual is also suitable for:

Cahb-21eCahb-20 seriesCahb-22e

Table of Contents