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The drive unit

38

4.4

The service board

The service board is located at the front of the drive unit
immediately under the covers.
With this board it is possible to set the service settings of the
stairlift.

4.4.1

Operation

The installation handle

At the factory a handle with a switch is fitted to the drive unit
that is connected to the control board to ease riding the lift
onto the rail. After installation the connection can be
removed.

The installation joystick

For service purposes the installation joystick can be
connected to the control board (J1401 see Figure 4-20) with
an interface cable (K36 adapter cable).

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Summary of Contents for Flow2A

Page 1: ......

Page 2: ...ty BV will not accept liability for any alteration or typing error Subject to the exceptions provided by law this publication and or its contents may not be whether entirely or partly reproduced copied and or published in print by photocopying on microfilm electronically or in any other way without the prior written consent of ThyssenKrupp Accessibility BV ...

Page 3: ..._____________ 13 3 2 Swivel seat system ______________________________________________________ 15 3 3 Safety mechanisms ______________________________________________________ 17 4 The drive unit_____________________________________________ 18 4 1 The drive unit___________________________________________________________ 18 4 1 1 The memory system ____________________________________________________...

Page 4: ...____________________36 4 3 5 The transformer ___________________________________________________________________37 4 3 6 Fuses ___________________________________________________________________________37 4 3 7 Measurement points and led indications________________________________________________37 4 4 The service board _______________________________________________________ 38 4 4 1 Operation ___...

Page 5: ... in its resting position at the bottom of the stairs Several major parts can be identified The transportation drive rail is used as a guidance rail for the motorized chair This rail is mounted on an existing staircase through rail mounting fixtures The motorized chair is controlled by the user with an armrest control device Additional RF Control devices are present at the bottom and top boarding p...

Page 6: ...owered swivel chair See section 3 2 Control components The control unit is placed on the down facing side of the chair in the armrest The standard version stairlift is equipped with two call and park units but more are possible Call and park units can be placed at each floor The client can also choose for an attendant control This is for situations in which the user has difficulty operating the st...

Page 7: ...and red Both materials are dirt resistant and fire retardant 1 3 Safety aspects The stairlift is equipped with various techniques to guarantee safe use In general all safeguards are duplicated one fault may never result in a dangerous situation The following safety devices are fitted An over speed device locks the stairlift mechanically if it goes too fast In that case the drive motor is also disc...

Page 8: ...ail Pinion The motor pinion combination generates the forces needed to move the chair along the transport rail The rail is mounted with several brackets on the staircase steps It is possible to design the rail and chair system for operation on the left or right side of the staircase The shape of the bended transport rail is determined by the drawing office This office uses the results of the stair...

Page 9: ...or situations in which the grey cone shaped rail cover is not a good match to the colour of the rail In this case the cone shaped rail cover is only used to mount the drive unit after which the black flat rail cover can be fitted Figure 2 4 Cone shaped rail cove Figure 2 5 Flat rail cover Emergency end stop With a horizontal rail runout an emergency stop is fitted on the underside of the rack A co...

Page 10: ...id confusion Looking from the stairs if you can see the inside of the curve then that is an inside curve If you can see the outside of the curve then that is an outside curve In the vertical plane they are called bottom and top curves There are also curves in both the horizontal and the vertical plane Such a curve is called a Spiral At the end of the rail there can be a vertical landing or a horiz...

Page 11: ...he bottom if the rail is on the right then it is called a right rail If the rail is on the left then it is called a left rail Parking locations If there is no room at the start or the end of the rail for parking the stairlift an extra parking location can be made along the rail Any such parking point will need to be located on a straight section or a horizontal bend The location of the extra parki...

Page 12: ...ttom or top landing to draw attention to the risk of stumbling over the rail Figure 2 9 Warning posts 2 4 Charging contacts The charging contacts are part of the power supply system Figure 2 10 Standard charging contact Figure 2 11 Mobile charging contact The positions of the charging contacts must match the positions of the parking and stopping places Mount the charging contacts on the rail using...

Page 13: ...d On a stairlift with a powered swivel seat system the chair is fitted with curved armrests This keeps the space required for turning as small as possible Figure 3 1 Folded Chair Controls In compliance with the CE approval the armrest on the down facing side of the stairs is fitted with a control unit On a stairlift with a left rail this is thus the right armrest and on a stairlift with a right ra...

Page 14: ... the footrest must be lowered so that the distance between the footrest and the stair remain the same but the distance between footrest and seat is increased In this way the chair can be adjusted to the height of the user Tab 04 Installation manual Chair folding mechanism The seat can be folded by lifting the front of the seat until the seat is vertical The movement is dampened by a gas spring The...

Page 15: ... lifting one of levers on either side of the chair frame At the end positions the chair can be locked in place by lowering the lever again The direction of rotation is dependent on the position at which the chair must rotate This cannot be changed The manually operated swivel seat is fitted at the top as standard to make stepping on and off easier In this case at the bottom the chair may only turn...

Page 16: ...ier Figure 3 7 Powered swivel seat The desired rotation angle at any point along the rail is given by the recorded position of the carriage and the rail data table which is programmed in the control boards memory The required swivel angles are different for every installed stairlift The rotation angle is determined by an encoder Additionally an opto coupler is used for detection of the zero angle ...

Page 17: ...ll be triggered by the anti squeeze mechanism which also uses an opto coupler Figure 3 8 At the moment that the chair runs into an obstruction the chair is pushed out of position against the spring pressure The opto coupler detects that the chair has turned and signals this to the control The control will the execute an emergency stop sequence by placing the motor in active brake mode followed by ...

Page 18: ... base horizontal level is located in the drive unit The drive unit consist of a number of boards namely Control board Chair level sensor board Safety level sensor board Hub board Receiver board Service board And the drive unit also includes a drive motor a horizontal motor and if present a swivel seat motor ...

Page 19: ...or control Drive hall sensor interface Level motor control Level hall sensor interface Swivel motor control Swivel hall sensor interface Hubboard Service Board RF Tranceiver On off switch OSD Opto switch USB interface Safety level sensor board Swivel Optiocouplers auto 2x Man 1x Chair level sensor board Bootloader not in manufacturing Drive in module Anti squeeze opto Switches 6x optional BLDC Dri...

Page 20: ...rol Level motor control Swivel motor control Brake control Gyroscope accelerometer Microcontroller Audio amplifier Speaker Memory storage Interfaces Supporting boards Chair sensor board The chair sensor board is mounted in the back of the pedestal of the drive unit It is connected with the system with a cable to the hub board The chair sensor is part of the levelling system and is providing the sy...

Page 21: ...en the horizontal angle is too far from zero or when it deviates to much from the chair sensor angle Figure 4 3 Safety sensor board and hub board inside the pedestal 1 Safety sensor board 2 Hub board Hub board The hub board is mounted inside the levelling drum The hub board serves as an interconnect between the sensor board the safety sensor board the two swivel opto s and the control board ...

Page 22: ...d that can be seen through the service cover Figure 4 5 Service board At the factory the drive is fitted with a handle and a switch that is connected to the control board With that handle the drive unit can be carried and the switches enable the service technician to ride the lift onto the rail in mode 3 see Tab 04 Installation manual After installation the handle can be disconnected and removed 4...

Page 23: ...emory is a temporary memory When settings are changed without confirming them they will be lost Figure 4 6 Micro SDcard memory setup 4 1 2 The drive motor system The stairlift is driven by a drive motor This is connected via three planetary transmission stages to the drive wheel that engages in de rail rack The motor must deliver the required force to transport the chair in a comfortable way by re...

Page 24: ...ng the rail is shown in figure below Figure 4 9 Because it is very likely that the weight centre of gravity of chair system is not directly above the rail during its travel the mounting and guidance construction prevents the chair from rolling around the rail tube The design is symmetrical because the drive base must be able to function on both the left and right side of a staircase ...

Page 25: ...d by the electronics As soon as the power is removed the brake will engage and lock the drive shaft In addition a safe drive is guaranteed by An over speed device OSD This is a mechanically locking brake that engages if the speed of the seat becomes too high The red pennon will follow the pinion until a certain speed is exceeded Then a gearwheel fitted directly underneath the drive gearwheel will ...

Page 26: ...counter as a table pointer It points to a table that is stored on the control board This table is the rail data This way the electronics can carry out the pre programmed actions at the right moment An action element consists of three fields rail position type of action associated value The following actions can be programmed Speed from 5 to 100 in steps of 5 100 corresponds with 100mm s Angle swiv...

Page 27: ... motor control system The electronics on the control board contain a three phase motor control for the three phase brushless dc motor and is controlled by the microcontroller The pulse counter receives the pulses from three encoders on the motor axis and calculates the motor position The driving signals are sent to the motor driver to give the motor the speed according the rail data table values T...

Page 28: ... When the stairlift moves along the rail the catchment gearwheel 1 with the teeth 2 and cam ring 3 turns at the same speed as the drive shaft Operation The over speed device Inside the cam wheel is an idler 4 This idler is shaped like a Christmas tree The top of the idler runs over the teeth 2 inside the cam ring 3 As long as the speed of the seat and thus the rotation speed of the over speed devi...

Page 29: ...the rail then the emergency limit switch comes into contact with the emergency end stop The emergency limit switch is moved so that the idler is pushed outwards A similar situation now occurs as for the exceeding of the maximum speed A mechanical lock is created and the power circuit to the drive unit is interrupted to prevent the seat riding off the rail The emergency limit switch must be manuall...

Page 30: ...nd for at least 1s 5 When the chair base is tilted beyond 5 measured by the chair sensor the stairlift will perform a normal stop When the chair sensor measured a tilt beyond 7 the levelling control will initiate an emergency stop An overview of this behaviour is given in figure below Figure 4 14 Overview of levelling behaviour When the deviation between chair sensor and safety sensor is beyond 4 ...

Page 31: ... wired connection with the control electronics and works with a joystick When the joystick is not touched the stick is in the middle position and the lift will not move By pushing and holding the stick in the direction of one of the arrows the lift will move in that direction Releasing the joystick will cause the lift to stop hold to run principle Below the joystick a transparent window is placed ...

Page 32: ...me as the wired user interface For safety reasons it is necessary that the joystick in the wired user interface is placed Repeater When the environment causes interference with the wireless transmission or when the distance between de call and park units and the stairlift becomes too large a repeater placed halfway along the stairs can solve this The repeater receives the signals from the call and...

Page 33: ...D on the controls Signals on the receiver board The led indication on the receiver board can indicate the following states Flashing green led the processor is working Continuously green led a valid command is received Continuously red led an invalid command is received 4 2 3 Wireless control unit operation Transmit and receive The data that is sent by the wireless control units is modulated by a f...

Page 34: ... Only moving in the opposite direction is possible Constant red led on armrest control warning sound fast intermittent beeps from drive unit There is a malfunction in the stairlift see error list Two tone beep high low during 3 seconds repeated every 13 seconds The stairlift is not on a charging point Two tone beep low high The stairlift is about to start sound starts every 1 s after operating UI ...

Page 35: ... can be used in this situation in a downwards direction The batteries are connected in series 2x12 24 Volt to the control board On the control board the power supplies for the other parts of the stairlift are generated 4 3 2 Switching the stairlift on and off At the rear of the drive unit is the main switch With this the stairlift can be switched on or off when it does not have to be used e g duri...

Page 36: ... to the rail The charge of the batteries can be checked by briefly pressing the E button on the service board The voltage is then presented on the display of the service board 4 3 4 The rail charging contacts To keep the batteries fully loaded the stairlift must be positioned on a set of charging contacts The charging contacts are mounted on to the rail during manufacturing With the installation t...

Page 37: ...two resettable polyfuses One fuse to protect the battery charging circuit and one fuse to protect the supply for the various printed circuit boards The batteries are protected by a 30A fuse This is fitted in the wiring from the battery to the control board and is not part of the electronics 4 3 7 Measurement points and led indications For service purposes there are a number of test points availabl...

Page 38: ...4 4 1 Operation The installation handle At the factory a handle with a switch is fitted to the drive unit that is connected to the control board to ease riding the lift onto the rail After installation the connection can be removed The installation joystick For service purposes the installation joystick can be connected to the control board J1401 see Figure 4 20 with an interface cable K36 adapter...

Page 39: ...e menu will be described in section 4 4 3 Exiting the service mode can be done by switching off and on the lift 4 4 3 Overview of the modes This section will describe the function and possibilities of the different modes Mode 0 The normal default mode for normal operations of the stairlift Entering this mode can always be done by switching off and on the lift When the E button is pressed the charg...

Page 40: ...dified Speed between 05 and 100 in steps of 5 Angle between 110 and 110 in steps of 5 Halt between 00 and 09 in steps of 1 Park between 00 and 09 in steps of 1 Rotation between 110 and 110 in steps of 5 Decreasing a value is done by the D button increasing the value is cone by the I button Empty the value is done by pressing and holding the D or I button for 2s Confirming the value is done by pres...

Page 41: ... is installed the I button has to be pressed SA Confirming the entry is done by pressing and holding the E button for 2s RPx Configure the repeater type default no repeater is installed To install a repeater the I button has to be pressed RP1 To un install a repeater the D button has to be Pressed RP0 Confirming the entry is done by pressing and holding the E button for 2s CHx Configure the RF cha...

Page 42: ... n the selected is indicated with a dot and then hold E button for 2s After the clear has been executed the system returns to the main menu FSd format SD card after pressing and holding the E button for 2s this must be confirmed by selecting first the y or the n the selected is indicated with a dot and then hold E button for 2s After the clear has been executed the system returns to the main menu ...

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