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SKF CAHB-20 Series Installation, Operation And Maintenance Manual Download Page 33

7.3 Action during operation

7.3.1  Normal operation

During normal operation, the linear actuator lifts and lowers the ele-

ments that are connected with the 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 

external limit switches installed on the application, the actuator will 

stop  before to reach the mechanical end stop and the clutch 

activation.

Use only the actuator within the specified limits.

Don’t place any of your body, hands, or arms near moving 

components

 



CAUTION

Material damage through overheating!

Therefore:

• Only use control integrated thermal switch.

• Never exceed nominal load.

• Always adhere to idle times and operating times  

(refer to technical data in chapter 

11 Appendix

).

33

Summary of Contents for CAHB-20 Series

Page 1: ...near 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 ...

Page 2: ......

Page 3: ... storage 23 5 1 Safety information for the transport 23 5 1 1Transport inspection 23 5 1 2 Return to the manufacturer 24 5 1 3 Packaging 24 5 2 Storage 25 6 Installation and first operation 26 6 1 Installation location 27 6 2 Installation 27 6 3 Inspections prior to first operation 29 6 4 Connect to power supply 29 6 4 1 Wiring scheme for no Limit Switch option 30 7 Operation 31 7 1 Safety 31 7 2 ...

Page 4: ...4 ...

Page 5: ...must always be kept in the actuator s direct proximity and should be available for the personnel at any time All personnel working with the actuator must read and understand this manual before starting any work Strict compliance with all specified safety notes and instructions is a basic requirement for safety at work Moreover the accident prevention guidelines and general safety precautions appli...

Page 6: ...nual unintended use employment of untrained personnel unauthorized conversions technical modifications manipulation or removal of the screws on the actuator use of unapproved spare parts 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 ac...

Page 7: ...re 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 on www SKF com 7 ...

Page 8: ...ns in this manual Do not allow this actuator to be subjected to weather condi tions strong UV rays corrosive or explosive air media as well as other aggressive media Do not modify retool or change the structural design or indi vidual components of the actuator Never use the actuator outside of the technical application and operational limits Any injury damage or loss caused by violation of these i...

Page 9: ...ve equipment In addition owner must train personnel at regular intervals and inform personnel of the hazards In addition owner or processors must ensure that the actuator is in an adequate working condition They must do the following Ensure that the maintenance intervals described in these instruc tions are complied with Have all safety devices inspected regularly for function and completeness WAR...

Page 10: ...ety instructions listed here and the warnings in sub sequent chapters of this Manual to reduce health hazards and to avoid dangerous situations DANGER Danger to life caused by electric current Touching conductive parts causes a direct danger to life Dam age to insulation or individual components can cause danger to life Therefore In the event of damage to insulation switch off the power supply imm...

Page 11: ...ency stop system required for certain applications The actuator is only intended for installation into an an application or system It does not have its own operating control elements and does not have an independent emergency stop function Install the actuator so that it is part of an emergency shut off sys tem and can be stopped if necessary The emergency shut off system has to be connected in su...

Page 12: ...tore CAUTION To prevent damage from overheating do not try to operate actuator until its temperature has fallen below the threshold for the switch to operate A driving screw nut converts the rotation of the gear unit into linear motion If an overload occurs when the actuator is operating a ball detent clutch will operate thus stopping linear motion CAUTION Continued operation of the clutch can res...

Page 13: ...s 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 13 ...

Page 14: ...c humidity maximum no build up of condensation up to 96 24 V DC version Duration intermittent Information Value Unit Maximum operating time without a break 1 Cycles Break until next operation 4 Times of operating time Max duty cycle at rated load 20 85 s on 340 s off 12 V DC version Duration intermittent Information Value Unit Maximum operating time without a break 1 Cycles Break until next operat...

Page 15: ...try of origin 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 For Potentiometer Voltage limited by power 2 W 24 V DC version supply voltage No limit switch option 24 V DC 10 Encoder option 4 20 V DC Potentiometer option Voltage ...

Page 16: ...ush tube 3 Guiding tube Steel tube 4 Motor 5 Cable 6 Rear hinge head 7 Gearbox Fig 3 CAHB 20 E Include 3 types outline CAHB 20 E with feedback 8 Middle housing Fig 4 CAHB 20 E with manual override Manual override option can be configured on all series 9 Manual override part 4 7 1 2 3 6 8 9 5 16 ...

Page 17: ...oy tube 4 Motor 5 Cable 6 Rear hinge head 7 Gearbox Fig 6 CAHB 21 E and 22 E Include 3 types outline CAHB 21 E and 22 E with feedback 8 Middle housing Fig 7 CAHB 21 E and 22 E with manual override Manual override option can be configured on all series 9 Manual override part 4 7 1 2 3 6 5 8 9 17 ...

Page 18: ...ar 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 Via the driving screw and nut the rotation of gear is transformed into a linear motion of the actuator The front hinge head 1 and the rear hinge head 6 transmit the actuator power to both sides of the applicatio...

Page 19: ...y CAUTION To prevent damage from overheating when the actuator stop with a high motor temperature do not restart the actuator but wait until the temperature decreases Gore automotive vent The vent allows the equalization of the pressure inside the actuator when it is operated that will insure an optimum usage of the sealing system Thermal protection The thermal switch built in the motor will switc...

Page 20: ...ion group description Motor The motor is a brushed DC motor 12 or 24 V DC The motor s shaft is connected to a helical gear The lift speed depends on the load The motor unit is surrounded by metal housing and equipped by a EMC filter The metal housing cannot be opened Gear unit The helical gear is directly powered by the motor shaft Gear unit is connected to the over load clutch that moves the driv...

Page 21: ...rs of wire are white green and brown Fig 11 Retract Extend Green Brown White POT Limit POT White Green Brown 0 CW 10K Fig 11 Potentiometer NOTE When actuator with POT or the analog output don t rotate the push tube 45 degree and don t connect to power before the actuator is installed into device see picture below Otherwise would demage the potentiometer or the analog sensor components WARNING 21 ...

Page 22: ...motor front NOTE The directions showed on the inner side of the motor front represent the extending or retracting of actuator DANGER Danger of injury caused by moving components Rotating components can cause severe injury Therefore Do not operate the manual override deice when actuator cable is connecting with power supplier 4 6 3 Encoder Dual hall sensor for incremental position feedback It outpu...

Page 23: ...t inspection The CAHB 2 linear actuator is delivered as one packaged unit in a box or on pallets Check the delivery for completeness and damage due to transport immediately upon receipt Send back actuator to manufacturer if it has cracks in the casing caused during transportation Check completeness of delivery A complete actuator unit If damage to the exterior of the actuator has occurred during t...

Page 24: ...he individual components from damage caused by the transport corrosion and other damage until they are ready for installation Therefore do not destroy the packaging and only remove the actuator shortly prior to the installa tion Keep packaging for possible return shipment to the manufac turer refer to chapter 5 1 3 Packaging If the packaging is to be disposed off please adhere to the following Han...

Page 25: ...ions Storage temperature 55 to 90 C Relative atmospheric humidity max 95 no build up of condensation For storage for longer than three months check the general condi tion of all parts of the packaging on a regular basis If necessary refresh or renew the conservation NOTE It is possible that there are notices on the packaging concerning additional storage requirements If so follow all requirements ...

Page 26: ...When correcting faults there is danger of the energy supply being switched on without authorization This poses a lifethreat ening hazard for persons in the danger zone Therefore Prior to starting work switch off the system and safeguard it from being switched on again WARNING Risk of injury and material damage due to incorrect installation of the optional devices Therefore Optional devices in part...

Page 27: ...he fastening bolts Fig 12 NOTE Information concerning the diameter of hinge heads can be found in the datasheet The dimensions of application elements and pins fastening bolts should be appropriate The fit dimen sions between holes and pins should follow the general toler ance principle so that keep a good installation status WARNING Risk of injury and material damage due to insufficient fastening...

Page 28: ... sure that the linear actuator is not impacted in its movement over the entire stroke area 4 During installation be sure that the motor cable is not squeezed clamped or pulled 5 Connect linear actuator to power supply refer to chapter 6 4 Con nect to Power Supply 6 Ensure that none of the supply or control cables can be pinched by the kinematics of the application or by the linear actuator during ...

Page 29: ...y features Reading of protective conductor resistance Reading of leakage currents Reading of insulation resistance NOTE Additional information concerning inspections and readings refer to chapter 8 Maintenance 6 4 Connect to power supply DANGER Electrical shock hazard Incorrect installation can result in serious injuries death or damage Only professional electricians should work on electrical syst...

Page 30: ...coder and L S VB Cable Red EXT Cable Black RET VB Motor M A VB VB A VB VB VB Cable Red EXT Cable Black RET Cable Green Cable White Extend VB 10K POT1 CW 1K Retract Motor M Cable Brown VB Cable Red EXT Cable Black RET VB SW RET D1 D2 S1 S2 SW EXT Motor M A VB VB Limit switch contol VB Cable Red EXT Cable Black RET VB SW RET D1 D2 S1 S2 SW EXT Motor M A VB VB Limit switch contol Cable Green Cable Wh...

Page 31: ...ration CAUTION Risk of injury through contact with the hinge head Therefore Do not let objects or body parts come in contact with the hinge head of the actuator CAUTION Material damage due to static and dynamic overload of the actuator Therefore Adhere to maximum permissible operating data for the actuator refer to data sheets in chapter 11 Appendix Never exceed nominal load Never tamper with the ...

Page 32: ...mal 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 32 ...

Page 33: ...xtended or retracted In case of optional limit switches or external limit switches installed on the application the actuator will stop before to reach the mechanical end stop and the clutch activation Use only the actuator within the specified limits Don t place any of your body hands or arms near moving components CAUTION Material damage through overheating Therefore Only use control integrated t...

Page 34: ...Technical data Consider the inertia of the movement of the linear actuator while setting up the position of the limit switch Prior to starting work run a function test to confirm that the external limit switch is operating properly DANGER Electrical shock hazard Incorrect installation can result in serious injuries death or damage Only professional electricians should work on electrical systems El...

Page 35: ... aid measures 3 Notify responsible person on site 4 If rescue vehicles have been requested keep access paths open for rescue vehicles 5 Based on severity of emergency notify the authorities if necessary 6 Order specialized staff to repair malfunction WARNING Do not restart until all persons are outside the hazard zone Check the actuator and application that uses the actuator prior to restarting th...

Page 36: ...esult in serious injuries death or damage Only professional electricians should work on electrical systems Electrical equipment DANGER Danger if restarted without authorization When correcting faults there is danger of the energy supply being switched on without authorization This poses a lifethreat ening hazard for persons in the danger zone Therefore Prior to starting work switch off the system ...

Page 37: ...nance work To be carried out by Daily Check actuator for visible damage Operator refer to chapter 8 3 3 Check of visual condition Clean off dust and dirt if necessary refer to chapter 8 3 1 Cleaning Operator Monthly Function check of operating fea tures and safety features refer to chapter 8 3 2 Inspections and readings Qualified personnel Check tight fit of the actuator to the hinge head Tighten ...

Page 38: ... with a damp cloth 8 3 2 Inspections and readings To be performed by professional electrician The inspections and readings must be performed as required by the applicable standards and regulations The list of the applicable standards can be found in the appendix The inspections must be documented Service Log Service log Complete the following entries in the service log Name of the executing body c...

Page 39: ... concerns reconnect the actuator to the power supply 8 4 Measures after completed maintenance Upon completion of the maintenance work the following steps have to be performed prior to restarting the actuator 1 Check all previously loosened screw connections for a tight fit 2 Ensure that all tools material and other equipment used during maintenance have been removed from the work area 3 Clean work...

Page 40: ...ption of the individual malfunction Work on the electric system may only be performed by profes sional electricians DANGER 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 Be sure power supply is off and actuator is locked out before installing Electrical equipment DANGER Danger if restar...

Page 41: ...pter 5 Transport packaging and storage Optional devices Behavior during malfunctions In principle 1 In the event of a malfunction that may present an immediate dan ger to persons or assets turn off the actuator or control unit immediately and safeguard against a restart 2 Determine cause of malfunction 3 Depending on the type of a malfunction have it repaired by qualified personnel 4 Inform respon...

Page 42: ...d damaged Send actuator for repair Actuator stops in mid stroke Clutch slips amperage present Actuator overloaded Check rated load or check voltage maybe too low Clutch doesn t slip no amperage Thermal cut out Let cool check duty cycle Clutch doesn t slip amperage present Motor stalled Check voltage too low Actuator cannot lift full load or Significantly reduced speed Proper voltage amp draw prese...

Page 43: ...9 2 Start of operation after fixing malfunction After the malfunction has been fixed perform the steps from the chapter Installation prior to restart 43 ...

Page 44: ...sharp edged components pins and cor ners on the individual components or at the required tools can cause serious injuries Therefore Ensure there is ample space for dismantling prior to starting with the work Use caution when working with open sharp edged structural components Ensure order and cleanliness at the dismantling site Loosely stacked structural components or structural components and too...

Page 45: ... take back or disposal agreement has been put in place disassembled components should be recycled Dispose of metals and plastic components at an appropriate recycling center Sort remaining components based on the respective material and dispose of according to applicable local occupational health and envi ronmental regulations CAUTION Damage can be caused to the environment due to incorrect dispos...

Page 46: ...11 Appendix Technical data sheets Please refer to the following document Actuator range catalogue PUB MT P1 18098 EN 46 ...

Page 47: ...C 12 12 12 24 24 24 Nominal current rated load A 12 5 15 17 5 6 5 8 Rated current clutch activation A 18 4 21 22 4 6 8 8 8 10 4 Duty cycle 10 85 765 s 10 85 765 s 10 85 765 s 20 85 340 s 20 85 340 s 20 85 340 s Mechanical data Stroke mm 50 700 50 700 50 700 50 700 50 700 50 700 Backlash mm 0 6 0 6 0 6 0 6 0 6 0 6 Weight for 200 mm stroke kg 4 5 4 5 4 5 4 5 4 5 4 5 Colour Black Black Black Black Bl...

Page 48: ...ush force 1 500 Rated push force 2 500 Rated push force 4 500 62 50 8 0 03 0 6 09 0 2 0 0 5 0 0 0 3 0 6 09 0 2 0 050 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 3...

Page 49: ...o AWG Colour Application 1 26 Green Sensor signal 1 Encoder 2 26 Yellow Sensor signal 2 Encoder 3 26 Black Sensor power GNO Encoder 4 26 Red Sensor power 5 V Encoder 5 14 Red Motor power Extension Retraction 6 14 Black Motor power Extension Retraction Encoder Feedback resolution list Actuator type Hall sensor resolution pulses mm POT resolution ohm mm CAHB 20 E 2 76 59 06 if S 050 125 29 53 if S 1...

Page 50: ...14 H11 0 0 11mm D Hole 12 2 H11 0 0 11mm E Customized X Attachment orientation Standard 0 A 30 B 60 C 90 D 120 E 150 F Customized X Option 1 Limit switch Not available 0 Option 2 Feedback None 0 Potentiometer P Encoder E Thermal protection Standard Built in thermal switch T Customization Stroke length retracted length cable connector front attachment rear attachment color de rated load Ordering ke...

Page 51: ... DC 12 12 12 24 24 24 Nominal current rated load A 14 5 16 19 7 7 5 10 5 Rated current clutch activation A 19 2 20 2 24 8 9 1 9 3 13 7 Duty cycle 10 85 765 s 10 85 765 s 10 85 765 s 20 85 340 s 20 85 340 s 20 85 340 s Mechanical data Stroke mm 50 700 50 700 50 700 50 700 50 700 50 700 Backlash mm 0 6 0 6 0 6 0 6 0 6 0 6 Weight for 200 mm stroke kg 4 8 4 8 4 8 4 8 4 8 4 8 Colour Black Black Black B...

Page 52: ...B 21 xxE push Ultimate CAHB 21 xxE pull Recommended CAHB 21 xxE push Recommended CAHB 21 xxE pull 0 03 0 6 09 0 2 0 0 5 0 0 0 3 0 6 09 0 2 0 050 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 ...

Page 53: ...on Retraction 5 14 Black Motor power Extension Retraction Wire connection with encoder Wire no AWG Colour Application 1 26 Green Sensor signal 1 Encoder 2 26 Yellow Sensor signal 2 Encoder 3 26 Black Sensor power GNO Encoder 4 26 Red Sensor power 5 V Encoder 5 14 Red Motor power Extension Retraction 6 14 Black Motor power Extension Retraction Potentiometer Encoder Hall 1 Hall 2 Hall 1 Hall 2 Signa...

Page 54: ... orientation Standard 0 A 30 B 60 C 90 D 120 E 150 F Customized X Option 1 Limit switch None mandatory for 1 500 N and 2 500 N version 0 Limit switch valid only for load version 4 500 L Option 2 Feedback None 0 Potentiometer P Encoder E Thermal protection Standard Built in thermal switch T Customization Stroke length retracted length cable connector front attachment rear attachment color de rated ...

Page 55: ...2 12 24 24 24 24 Nominal current rated load A 18 19 5 19 5 19 8 9 5 9 5 8 5 Rated current clutch activation A 24 3 25 5 25 5 25 10 6 12 3 12 3 10 9 Duty cycle 10 85 765 s 10 85 765 s 10 85 765 s 10 85 765 s 20 85 340 s 20 85 340 s 20 85 340 s 20 85 340 s Mechanical data Stroke mm 50 700 50 700 50 610 50 450 50 700 50 700 50 610 50 450 Backlash mm 1 0 1 0 0 6 0 6 1 0 1 0 0 6 0 6 Weight for 200 mm s...

Page 56: ... 22 xxE push Ultimate CAHB 22 xxE pull Recommended CAHB 22 xxE push Recommended CAHB 22 xxE pull 12 8 0 03 0 6 09 0 2 0 0 5 0 0 0 3 0 6 09 0 2 0 050 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 0 1 5 0 0 0 3 0 6 09 1 2 0 150 0 03 0 6 09 1 2 ...

Page 57: ...extension Signal CW retraction Wire connection with potentiometer Wire no AWG Colour Application 1 22 Green See picture description 2 22 White See picture description 3 22 Brown See picture description 4 14 Red Motor power Extension Retraction 5 14 Black Motor power Extension Retraction Wire connection with encoder Wire no AWG Colour Application 1 26 Green Sensor signal 1 Encoder 2 26 Yellow Senso...

Page 58: ...andard 0 A 30 B 60 C 90 D 120 E 150 F Customized X Option 1 Limit switch None mandatory for 2 300 N and 3 500 N version 0 Limit switch valid only for load version 6 800 N and 10 000 N not mandatory for 10 000 N L Option 2 Feedback None 0 Potentiometer P Encoder E Thermal protection Standard Built in thermal switch T Customization Stroke length retracted length cable connector front attachment rear...

Page 59: ...Reprint from PUB MT P1 18098 EN 59 ...

Page 60: ...ess 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 PUB MT I4 17986 EN December 2018 Certain image s used under license from Shutterstock com ...

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