Invacare MK5 NX Service Manual
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Invacare MK5 NX Service Manual

Invacare MK5 NX Service Manual

Electronics
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Service Manual
MK
5
DEALER: Keep this manual. The
procedures in this manual MUST be
performed by a qualified technician.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com
™NX™Electronics
NX
NX-B
NX-LP
NX-50
NX-75
NX w/ACC

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Summary of Contents for Invacare MK5 NX

  • Page 1 Service Manual ™NX™Electronics NX-B NX-LP NX-50 NX-75 NX w/ACC DEALER: Keep this manual. The procedures in this manual MUST be performed by a qualified technician. For more information regarding Invacare products, parts, and services, please visit www.invacare.com...

  • Page 2: Useful Terms

    NX AND NX-50 Non-Expandable NX-LP Non-Expandable Limited Programming NX-B Non-Expandable with Alternate Standard Program NX-75 Non-Expandable with 75 Amps Rear Wheel Drive Center Wheel Drive Drive Control Input NOTE: Updated versions of this manual are available on www.invacare.com. ™NX™Electronics Part No 1110532...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS USEFUL TERMS ................. 2 SPECIAL NOTES ................5 SECTION 1—GENERAL GUIDELINES ........... 6 Accessories ..............................6 Operation Information ..........................6 Repair or Service ............................7 Sip n’ Puff (Pneumatic) Controls......................8 SECTION 2—EMI INFORMATION ............9 SECTION 3—TROUBLESHOOTING ............ 11 All Power Wheelchairs ...........................11 Wheelchairs With Elevate Systems......................12 SECTION 4—JOYSTICK DESCRIPTIONS ..........
  • Page 4 TABLE OF CONTENTS TABLE OF CONTENTS SECTION 5—PERFORMANCE ADJUSTMENTS ........21 Main Menu..............................21 Performance Adjust Menu........................21 NX, NX-50, NX-75, NX w/ACC, and NX-B ................21 NX-LP..............................22 Making Performance Adjustments......................22 NX, NX-50, NX-75, NX w/ACC, and NX-B Controller ............24 Flowchart ............................24 Performance Menu Description ....................25 NX-LP Controller..........................26 Flowchart ............................26 Performance Menu Description ....................27...

  • Page 5: Special Notes

    If the wheelchair does not perform to specifications, turn the wheelchair Off immediately and reenter set up specifications. Contact Invacare, if wheelchair still does not perform to correct specifications.

  • Page 6: Section 1-General Guidelines

    Invacare products are specifically designed and manufactured for use in conjunction with Invacare accessories. Accessories designed by other manufacturers have not been tested by Invacare and are not recommended for use with Invacare products. DO NOT use non-Invacare accessories. To obtain Invacare accessories, contact Invacare by phone or at www.invacare.com.

  • Page 7: Repair Or Service

    SECTION 1—GENERAL GUIDELINES DANGER Risk of Death or Serious Injury Electric shock can cause death or serious injury To avoid electric shock, inspect plug and cord for cuts and/or frayed wires. Replace cut cords or frayed wires immediately. WARNING Risk of Serious Injury or Damage Moving the seating system from the factory setting may reduce driver control, wheelchair stability, traction and increase caster wear resulting in serious injury or damage.

  • Page 8: Sip N' Puff (Pneumatic) Controls

    Risk of Death, Serious Injury or Damage Use of incorrect or improper replacement (service) parts may cause death, serious injury, or damage. Replacement parts MUST match original Invacare parts. ALWAYS provide the wheelchair serial number to assist in ordering the correct replacement parts.

  • Page 9: Section 2-Emi Information

    SECTION 2—EMI INFORMATION SECTION 2—EMI INFORMATION WARNING CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC INTERFERENCE ON YOUR POWERED WHEELCHAIR. Electromagnetic Interference (EMI) From Radio Wave Sources Powered wheelchairs and motorized scooters (in this text, both will be referred to as powered wheelchairs) may be susceptible to electromagnetic interference (EMI), which is interfering electromagnetic energy (EM) emitted from sources such as radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and...
  • Page 10 2) This device has been tested to a radiated immunity level of 20 volts per meter. 3) The immunity level of the product is unknown. Modification of any kind to the electronics of this wheelchair as manufactured by Invacare may adversely affect the EMI immunity levels. ™NX™Electronics Part No 1110532...

  • Page 11: Section 3-Troubleshooting

    Contact Dealer/Invacare for Service. not respond as desired. Electrical malfunction. Contact Dealer/Invacare for Service. Controller programmed Contact Dealer/Invacare to have controller improperly. reprogrammed. Wheelchair veers to the Joystick needs to be calibrated. Calibrate joystick with programmer. If this does not left or right when driving work, replace joystick.

  • Page 12: Wheelchairs With Elevate Systems

    Malfunctioning seating Check for error codes. Refer to Performance system controller. Adjustments on page 21 for the correct perfor- mance adjustment menu descriptions. Replace seat- ing system controller, if necessary. Contact Invacare. ™NX™Electronics Part No 1110532...

  • Page 13: Section 4-Joystick Descriptions

    SECTION 4—JOYSTICK DESCRIPTIONS SECTION 4—JOYSTICK DESCRIPTIONS SPJ™and CSPJ™Joystick Switches and Indicators NOTE: For the following information, refer to FIGURE 4.1. SPJ Joystick Joystick Charger/ Programming Input Speed Control Knob On/Off Toggle Switch To Controller CSPJ Joystick Horn Information Joystick Multi-Function Gauge On/Off Charger Port...

  • Page 14: Speed Control Knob

    SECTION 4—JOYSTICK DESCRIPTIONS Speed Control Knob The speed control knob is located on the back of the joystick housing. This rotary switch is used for controlling the speed and acceleration of the wheelchair. 1. Turn the switch clockwise to increase the speed of the wheelchair. 2.
  • Page 15 SPJ Diagnostic Indications of Wheelchair Status DISPLAY DESCRIPTION DEFINITION COMMENTS All three LEDs are off. Power is Off. INVACARE All three LEDs are on. Power is On. Fewer than three LEDs on implies reduced battery charge. INVACARE RED LED is flashing.
  • Page 16 SECTION 4—JOYSTICK DESCRIPTIONS CSPJ Diagnostic Indications of Wheelchair Status DISPLAY DESCRIPTION DEFINITION COMMENTS All LEDs are off. Power is Off. All LEDs are on. Power is On. Fewer than three LEDs on implies reduced battery charge. Left RED LED is flashing. Battery charge is low.

  • Page 17: Spj+ And Spj+ W/Acc Joystick Switches And Indicators

    SECTION 4—JOYSTICK DESCRIPTIONS SPJ+ and SPJ+ w/ACC Joystick Switches and Indicators NOTE: For this procedure, refer to FIGURE 4.2. SPJ+ Joystick Joystick Information Gauge Display On/Off Button Decrease Speedometer Speed Button (Tortoise) Increase DETAIL “A” - Speed Button FRONT VIEW (Hare) GREEN Charger/...

  • Page 18: On/Off Button

    SECTION 4—JOYSTICK DESCRIPTIONS On/Off Button This button is located at the front of the joystick housing. It is used to turn the wheelchair on and off, to remove the joystick from sleep mode (if programmed) and to lock or unlock the joystick (if programmed).

  • Page 19: Joystick

    SECTION 4—JOYSTICK DESCRIPTIONS Joystick The joystick has proportional drive control, meaning that further the joystick is pushed from the upright (neutral) position, the faster the wheelchair or seat moves. Your top speed, however, is limited by the programmed settings. To slow the wheelchair to a stop, simply release the joystick. The wheelchair has automatic speed and direction compensation to minimize corrections.
  • Page 20 SECTION 4—JOYSTICK DESCRIPTIONS INFORMATION DESCRIPTION DEFINITION COMMENTS GAUGE DISPLAY All LEDs are off. Power is off. All LEDs are on. Power is on. Fewer than three LEDs on implies reduced battery charge. Left RED LED is flashing. Battery charge is low. The batteries should be charged as soon as possible.

  • Page 21: Section 5-Performance Adjustments

    SECTION 5—PERFORMANCE ADJUSTMENTS SECTION 5—PERFORMANCE ADJUSTMENTS Main Menu NOTE: For this procedure, refer to FIGURE 5.1. The first display screen shown after powering on the Remote Programmer is the Main Menu. The main menu consists of the following options: Performance Adjust, Programs, Other. The arrow to the left is the selection pointer.

  • Page 22: Nx-Lp

    SECTION 5—PERFORMANCE ADJUSTMENTS NX-LP NOTE: For this procedure, refer to FIGURE 5.3. The Performance Adjust Menu for NX-LP consists of the following: Remote ➜ FORWARD SPD Programmer TURNING SPD ACCELERATION - FWD LCD Display ACCELERATION - REV REVERSE SPEED FIGURE 5.3 Performance Adjust Menu - NX-LP Making Performance Adjustments WARNING DO NOT mismatch a program with the wheelchair type (i.e.
  • Page 23 SECTION 5—PERFORMANCE ADJUSTMENTS To change the programmed value for an option (i.e. Acceleration - FWD), press the so the selection arrow points to Acceleration - FWD. FORWARD SPEED TURNING SPEED ➜ ACCELERATION - FWD ACCELERATION - REV Press the SELECT key. The display screen changes to the adjustment screen. The top line shows the function.

  • Page 24: Nx, Nx-50, Nx-75, Nx W/Acc, And Nx-B Controller

    SECTION 5—PERFORMANCE ADJUSTMENTS NX, NX-50, NX-75, NX w/ACC, and NX-B Controller Flowchart NOTE: For this procedure, refer to FIGURE 5.4. Below is a flowchart on how to use a hand held programmer to select and modify functions. FIGURE 5.4 NX, NX-50, NX-75, NX w/ACC, and NX-B Controller ™NX™Electronics Part No 1110532...

  • Page 25: Performance Menu Description

    SECTION 5—PERFORMANCE ADJUSTMENTS Performance Menu Description The performance adjustment menu items are listed below with a description of each function. MENU ITEM DESCRIPTION FORWARD SPEED Sets the maximum forward speed. The fastest speed setting is 100%. Use the keys to change the value. TURNING SPEED Sets the TURNING SPEED as a percentage of the maximum forward speed.

  • Page 26: Nx-Lp Controller

    SECTION 5—PERFORMANCE ADJUSTMENTS NX-LP Controller Flowchart NOTE: For this procedure, refer to FIGURE 5.5. Below is a flowchart on how to use a hand held programmer to select and modify functions. FIGURE 5.5 NX-LP Controller ™NX™Electronics Part No 1110532...

  • Page 27: Performance Menu Description

    SECTION 5—PERFORMANCE ADJUSTMENTS Performance Menu Description The performance adjustment menu items are listed below with a description of each function. MENU ITEM DESCRIPTION FORWARD SPEED Sets the maximum forward speed. The fastest speed setting is 100%. Use the keys to change the value. TURNING SPEED Sets the TURNING SPEED as a percentage of the maximum forward speed.

  • Page 28: Section 6-Remote Programmer

    SECTION 6—REMOTE PROGRAMMER SECTION 6—REMOTE PROGRAMMER Overview NOTE: For this procedure, refer to FIGURE 6.1. The Remote Programmer is the information center of the control module. Through simple key sequences, the Remote Programmer allows modification of the performance characteristics, gives diagnostics information for troubleshooting and permits calibration of the control module.

  • Page 29: Remote Programmer Terminology

    SECTION 6—REMOTE PROGRAMMER Remote Programmer Terminology Function A function is a performance characteristic which can be adjusted or modified to improve the operation of the wheelchair for a particular control need. Two examples are: The forward speed function may be adjusted to a higher or lower speed the same way as you would adjust a trimpot in other controls.

  • Page 30: Description Of Remote Programmer Keys

    SECTION 6—REMOTE PROGRAMMER Description Of Remote Programmer Keys DESCRIPTION POWER KEY The POWER key turns on and off the LCD display. Press the POWER key once and the display will come ON. Press the POWER key again and the display will turn OFF. MENU KEY The MENU key returns the LCD display to the previous screen.

  • Page 31: Section 7-Programs

    SECTION 7—PROGRAMS SECTION 7—PROGRAMS Program Settings WARNING DO NOT mismatch a program with the wheelchair type (i.e. selecting a rear wheel drive program for a center wheel drive wheelchair or vice versa). Confirm that the settings and program match the wheelchair before selecting or saving. Otherwise, unintended and unsafe joystick control of the wheelchair will occur, possibly result- ing in serious bodily injury.
  • Page 32 SECTION 7—PROGRAMS DEFAULT SETTINGS FOR NX FUNCTION PROGRAM 1 PROGRAM 2 PROGRAM 3 RWD 2-POLE RWD 4-POLE CWD 2-POLE FORWARD SPEED TURNING SPEED ACCELERATION - FWD ACCELERATION - REV TURN ACCELERATION TURN DECELERATION BRAKING FORWARD BRAKING REVERSE REVERSE SPEED TREMOR DAMPENING TORQUE DEFAULT SETTINGS FOR NX-B FUNCTION...
  • Page 33 SECTION 7—PROGRAMS DEFAULT SETTINGS FOR NX-50 FUNCTION PROGRAM 1 PROGRAM 2 PROGRAM 3 M41-1 M41-2 M41-3 FORWARD SPEED TURNING SPEED ACCELERATION - FWD ACCELERATION - REV TURN ACCELERATION TURN DECELERATION BRAKING FORWARD BRAKING REVERSE REVERSE SPEED TREMOR DAMPENING TORQUE DEFAULT SETTINGS FOR NX W/ACC FUNCTION PROGRAM 1 PROGRAM 2...
  • Page 34 SECTION 7—PROGRAMS DEFAULT SETTINGS FOR NX-75 FUNCTION PROGRAM 1 PROGRAM 2 PROGRAM 3 CWD M91 CWD M91 HD CWD M91 FORWARD SPEED TURNING SPEED ACCELERATION - FWD ACCELERATION - REV TURN ACCELERATION TURN DECELERATION BRAKING FORWARD BRAKING REVERSE REVERSE SPEED TREMOR DAMPENING TORQUE DEFAULT SETTINGS FOR NX-LP...

  • Page 35: Section 8-Other Functions

    SECTION 8—OTHER FUNCTIONS SECTION 8—OTHER FUNCTIONS Description of Other Functions Select OTHER from the main menu to display Motor Balance, Joystick Throw, Fault Log, and Usage Statistics. Use the keys to select the function desired. The SELECT key will display the current value and permit modifications. Always press SAVE after changes are made.

  • Page 36: Section 9-Diagnostic Codes

    SECTION 9—DIAGNOSTIC CODES SECTION 9—DIAGNOSTIC CODES What Are Diagnostics Codes? The joystick information gauge and the Remote Programmer give indications of the type of fault or error detected by the control module. When a fault is detected, the wheelchair will stop and not drive. All of the lights on the information gauge will begin to flash (SPJ and CSPJ joysticks) or the service indicator light will flash (SPJ+ and SPJ+ w/ACC joystick).
  • Page 37 SECTION 9—DIAGNOSTIC CODES Right Motor Fault Right Motor Short Circuit Check the right motor, connections and motor cable. Right Motor Open Circuit Right Motor Connection Fault Motor Terminal Connected to B+ Right Motor Voltage Fault Right Motor Bridge Fault Too Many Hardware Cur- rent Limit Events Current Offset Out of Range Hardware Current Limit Fault...
  • Page 38 Check connections and wiring. Replace Fault Bus cable. Low communication mode General Fault General fault Check all connections and wiring. Contact Invacare Technical Service. Incompatible/ Incompatible/incorrect Wrong type of remote connected. Ensure incorrect Remote Remote the branding of the joystick matches that of controller unit.

  • Page 39: Section 10-Connector Descriptions

    SECTION 10—CONNECTOR DESCRIPTIONS SECTION 10—CONNECTOR DESCRIPTIONS Controller Connector Descriptions NX, NX-50, NX-75, NX-B and NX-LP NOTE: For this procedure, refer to FIGURE 10.1. Front of Controller FIGURE 10.1 NX, NX-50, NX-75, NX-B and NX-LP NX w/ACC NOTE: For this procedure, refer to FIGURE 10.2. Front of Controller FIGURE 10.2 NX w/ACC...

  • Page 40: Battery Connector Pinout

    SECTION 10—CONNECTOR DESCRIPTIONS Battery Connector Pinout NOTE: For this procedure, refer to FIGURE 10.3. FUNCTION Battery Positive Battery Negative FIGURE 10.3 Battery Connector Pinout Motor Connector Pinout NOTE: For this procedure, refer to FIGURE 10.4. FUNCTION Motor Positive Motor Negative Park Brake Negative Park Brake Positive FIGURE 10.4 Motor Connector Pinout...

  • Page 41: Nx, Nx-50, Nx-75, Nx-B, And Nx-Lp

    SECTION 10—CONNECTOR DESCRIPTIONS NX, NX-50, NX-75, NX-B, and NX-LP NOTE: For this procedure, refer to FIGURE 10.6. FUNCTION Battery Positive DCI Input (Drive Lockout) --No Connection-- Battery Negative FIGURE 10.6 NX, NX-50, NX-75, NX-B, and NX-LP NX w/ACC NOTE: For this procedure, refer to FIGURE 10.7. FUNCTION FUNCTION Actuator 1 Negative...
  • Page 42 SECTION 10—CONNECTOR DESCRIPTIONS NOTES ™NX™Electronics Part No 1110532...
  • Page 43 SECTION 10—CONNECTOR DESCRIPTIONS NOTES Part No 1110532 ™NX™Electronics...

  • Page 44: Limited Warranty

    In the event you do not receive satisfactory warranty service, please write directly to Invacare at the address at the bottom of the back cover. Provide dealer’s name, address, date of purchase, indicate nature of the defect and, if the product is serialized, indicate the serial number.

This manual is also suitable for:

Mk5 nx-bMk5 nx-lpMk5 nx-50Mk5 nx-75

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