Invacare 1110532 User Manual

Service Manual

MK5™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

USEFUL TERMS

 WARNING

A QUALIFIED TECHNICIAN MUST PERFORM THE INITIAL SET UP OF THIS WHEELCHAIR. ALSO, A QUALIFIED TECHNICIAN MUST PERFORM ALL PROCEDURES IN THE SERVICE MANUAL.

WHEELCHAIR USERS: DO NOT SERVICE OR OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING (1) THE OWNER’S OPERATOR AND MAINTENANCE MANUAL AND (2) THE SEATING SYSTEM MANUAL (IF APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE WARNINGS, CAUTIONS, AND INSTRUCTIONS, CONTACT INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO SERVICE OR OPERATE THIS EQUIPMENT - OTHERWISE INJURY OR DAMAGE MAY RESULT.

DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING (1) THE OWNER’S OPERATOR AND MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF APPLICABLE) AND (3) THE SEATING SYSTEM MANUAL (IF APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO SERVICE OR OPERATE THIS EQUIPMENT - OTHERWISE, INJURY OR DAMAGE MAY RESULT.

USEFUL TERMS

The following acronyms are used throughout this manual:

ACRONYM DEFINITION

SPJ Single Purpose Joystick

CSPJ Composite Single Purpose Joystick

ACC Accessory

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

RWD Rear Wheel Drive

CWD Center Wheel Drive

DCI Drive Control Input

NOTE: Updated versions of this manual are available on www.invacare.com.

MK5™NX™Electronics 2 Part No 1110532

TABLE OF CONTENTS

USEFUL TERMS ................................................................................. 2

SPECIAL NOTES ................................................................................ 5

SECTION 1—GENERAL GUIDELINES ................................................... 6

Controller Settings/Repair or Service ...................................................................................................6

Operation Information..............................................................................................................................6

SECTION 2—EMI INFORMATION ....................................................... 7

SECTION 3—TROUBLESHOOTING ...................................................... 9

All Power Wheelchairs .............................................................................................................................9

Wheelchairs With Elevate Systems......................................................................................................10

SECTION 4—JOYSTICK DESCRIPTIONS ............................................. 11

SPJ™and CSPJ™Joystick Switches and Indicators ............................................................................11

On/Off Switch.......................................................................................................................................11

SPJ Joysticks .....................................................................................................................................11

CSPJ Joysticks ..................................................................................................................................11

Speed Control Knob ...........................................................................................................................12

Joystick....................................................................................................................................................12

Charger/Programming Input..............................................................................................................12

Information Gauge Display ................................................................................................................12

SPJ+ and SPJ+ w/ACC Joystick Switches and Indicators .................................................................15

On/Off Button ......................................................................................................................................16

Speedometer.........................................................................................................................................16

Speed Control Buttons.......................................................................................................................16

Mode Button .........................................................................................................................................16

Joystick....................................................................................................................................................17

Charger/Programming Input..............................................................................................................17

Service Indicator...................................................................................................................................17

Information Gauge Display ................................................................................................................17

SECTION 5—PERFORMANCE ADJUSTMENTS .................................... 19

Main Menu..................................................................................................................................................19

Performance Adjust Menu......................................................................................................................19

NX, NX-50, NX-75, NX w/ACC, and NX-B ...............................................................................19

NX-LP.....................................................................................................................................................20

Making Performance Adjustments........................................................................................................20

NX, NX-50, NX-75, NX w/ACC, and NX-B Controller..........................................................22

Flowchart .........................................................................................................................................22

Performance Menu Description .................................................................................................23

NX-LP Controller................................................................................................................................24

Flowchart .........................................................................................................................................24

Performance Menu Description .................................................................................................25

Part No 1110532 3 MK5™NX™Electronics

TABLE OF CONTENTS

SECTION 6—REMOTE PROGRAMMER .............................................. 26

Overview....................................................................................................................................................26

Remote Programmer Terminology ......................................................................................................27

Function..................................................................................................................................................27

Value .......................................................................................................................................................27

Program (Preset Programs with Standard Value Settings).........................................................27

Temporary Memory............................................................................................................................27

User Memory Values...........................................................................................................................27

Description Of Remote Programmer Keys .......................................................................................28

SECTION 7—PROGRAMS ................................................................. 29

Program Settings.......................................................................................................................................29

SECTION 8—OTHER FUNCTIONS ..................................................... 33

Description of Other Functions............................................................................................................33

SECTION 9—DIAGNOSTIC CODES .................................................... 34

What Are Diagnostics Codes? ..............................................................................................................34

SECTION 10—CONNECTOR DESCRIPTIONS ...................................... 37

Controller Connector Descriptions....................................................................................................37

NX, NX-50, NX-75, NX-B and NX-LP..........................................................................................37

NX w/ACC............................................................................................................................................37

Battery Connector Pinout .................................................................................................................38

Motor Connector Pinout...................................................................................................................38

Joystick Connector Pinout.................................................................................................................38

Drive Control Input (DCI) ................................................................................................................38

NX, NX-50, NX-75, NX-B, and NX-LP ...................................................................................39

NX w/ACC ......................................................................................................................................39

Battery Charger Port ..........................................................................................................................39

LIMITED WARRANTY ..................................................................... 40

MK5™NX™Electronics 4 Part No 1110532

SPECIAL NOTES

Signal words are used in this manual and apply to hazards or unsafe practices which could result in personal injury or property damage. Refer to the table below for definitions of the signal words.

SIGNAL WORD MEANING

Danger indicates an imminently hazardous situation which, if not avoided

DANGER

WARNING

CAUTION

THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.

will result in death or serious injury.

Warning indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE

THIS MANUAL PERTAINS TO ONLY MK5 ELECTRONICS.

 REPAIR OR SERVICE WARNING

Setup of the Electronics Control Unit is to be performed only by a qualified technician. The adjustments of the controller may affect other activities of the wheelchair. Damage to the equipment could occur if improperly set-up or adjusted.

 OPERATION WARNING

Performance adjustments should only be made by professionals of the health care field or persons fully conversant with this process and the driver's capabilities. Incorrect settings could cause injury to the driver, bystanders, damage to the wheelchair and surrounding property. After the wheelchair has been setup, check to make sure that the wheelchair performs to the specifications entered in the setup procedure. If the wheelchair does not perform to specifications, turn the wheelchair off immediately and re-enter setup specifications. Repeat this procedure until the wheelchair performs to specifications.

 WARNING

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.

Wheelchairs should be examined during maintenance for signs of corrosion (water exposure, incontinence, etc.). Electrical components damaged by corrosion should be replaced IMMEDIATELY.

Wheelchairs that are used by incontinent users and/or are frequently exposed to water may require replacement of electrical components more frequently.

Part No 1110532 5 MK5™NX™Electronics

SECTION 1—GENERAL GUIDELINES

 WARNING

SECTION 1 - GENERAL GUIDELINES contains important information for the safe operation and use of this product. DO NOT use this product or any available optional equipment without first completely reading and understanding these instructions and any additional instructional material such as Owner’s Manuals, Service Manuals or Instruction Sheets supplied with this product or optional equipment. If you are unable to understand the Warnings, Cautions or Instructions, contact a healthcare professional, dealer or technical personnel before attempting to use this equipment - otherwise, injury or damage may occur.

Controller Settings/Repair or Service

Set-up of the Electronics Control Unit is to be performed only by a qualified technician. The final adjustments of the controller may affect other activities of the wheelchair. Damage to the equipment could occur if improperly set-up or adjusted.

Operation Information

After the wheelchair has been set-up, check to make sure that the wheelchair performs to the specifications entered during the set-up procedure. If the wheelchair does not perform to specifications, turn the wheelchair off immediately and reenter set-up specifications. Repeat this procedure until the wheelchair performs to specifications.

DO NOT use the wheelchair if the joystick boot is torn or cracked. If the joystick boot becomes torn or cracked, replace IMMEDIATELY.

If the joystick knob is missing, DO NOT use the wheelchair. In case of a fall, the exposed stem could cause serious personal injury.

Periodically inspect the joystick and joystick cable for damage. Joystick cable MUST be routed and secured properly to ensure that cable does not become entangled and damaged/pinched during normal operation of wheelchair. If the joystick and/or cable is damaged, DO NOT use the wheelchair.

If the joystick knob does not return back to the neutral position, DO NOT use the wheelchair.

MK5™NX™Electronics 6 Part No 1110532

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 cellular phones. The interference (from radio wave sources) can cause the powered wheelchair to release its brakes, move by itself, or move in unintended directions. It can also permanently damage the powered wheelchair's control system. The intensity of the interfering EM energy can be measured in volts per meter (V/m). Each powered wheelchair can resist EMI up to a certain intensity. This is called its "immunity level." The higher the immunity level, the greater the protection. At this time, current technology is capable of achieving at least a 20 V/m immunity level, which would provide useful protection from the more common sources of radiated EMI.

There are a number of sources of relatively intense electromagnetic fields in the everyday environment. Some of these sources are obvious and easy to avoid. Others are not apparent and exposure is unavoidable. However, we believe that by following the warnings listed below, your risk to EMI will be minimized.

The sources of radiated EMI can be broadly classified into three types:

1) Hand-held Portable transceivers (transmitters-receivers with the antenna mounted directly on the transmitting unit. Examples include: citizens band (CB) radios, "walkie talkie", security, fire and police transceivers, cellular telephones, and other personal communication devices).

NOTE: Some cellular telephones and similar devices transmit signals while they are ON, even when not being used.

2) Medium-range mobile transceivers, such as those used in police cars, fire trucks, ambulances and taxis. These usually have the antenna mounted on the outside of the vehicle; and

3) Long-range transmitters and transceivers, such as commercial broadcast transmitters (radio and TV broadcast antenna towers) and amateur (HAM) radios.

NOTE: Other types of hand-held devices, such as cordless phones, laptop computers, AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to your powered wheelchair.

Part No 1110532 7 MK5™NX™Electronics

SECTION 2—EMI INFORMATION

 WARNING

Powered Wheelchair Electromagnetic Interference (EMI)

Because EM energy rapidly becomes more intense as one moves closer to the transmitting antenna (source), the EM fields from hand-held radio wave sources (transceivers) are of special concern. It is possible to unintentionally bring high levels of EM energy very close to the powered wheelchair's control system while using these devices. This can affect powered wheelchair movement and braking. Therefore, the warnings listed below are recommended to prevent possible interference with the control system of the powered wheelchair.

Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect powered wheelchairs and motorized scooters.

FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.

1) Do not operate hand-held transceivers (transmitters receivers), such as citizens band (CB) radios, or turn ON personal communication devices, such as cellular phones, while the powered wheelchair is turned ON;

2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid coming close to them;

3) If unintended movement or brake release occurs, turn the powered wheelchair OFF as soon as it is safe;

4) Be aware that adding accessories or components, or modifying the powered wheelchair, may make it more susceptible to EMI (NOTE: There is no easy way to evaluate their effect on the overall immunity of the powered wheelchair); and

5) Report all incidents of unintended movement or brake release to the powered wheelchair manufacturer, and note whether there is a source of EMI nearby.

Important Information

1) 20 volts per meter (V/m) is a generally achievable and useful immunity level against EMI (as of May 1994) (the higher the level, the greater the protection).

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.

MK5™NX™Electronics 8 Part No 1110532

SECTION 3—TROUBLESHOOTING

All Power Wheelchairs

SYMPTOM PROBABLE CAUSE SOLUTIONS

Error Code E03 or E04, 3 or 4 flashes of joystick LEDs.

Error Code E02, 2 flashes of joystick LEDs.

Joystick erratic or does not respond as desired.

Wheelchair veers to the left or right when driving on level surface.

No LED’s on joystick. Joystick connection to

Corroded wiring or connections.

Wheelchair does not respond to commands.

Power indicator off - even after recharging.

Motor lock levers disengaged. Engage motor lock levers. Refer to the wheelchair

Owner’s Manual for more information.

Bad motor connection. Check all motor connections.

Ohm out motors. Check brushes and replace if necessary. Replace motors if high reading is present. Normal reading is 0.2-5 Ohms (4 Pole motors) or

0.5-5 Ohms (2 Pole motors). Refer to wheelchair Service Manual.

Bad brake coil Ohm out brake connection. Normal reading is 40-

80 Ohms.

Batteries need to be charged. Charge batteries. Refer to the wheelchair Owner’s

Manual for charging instructions.

Damaged motor coupling. Contact Dealer/Invacare for Service.

Electrical malfunction. Contact Dealer/Invacare for Service.

Controller programmed improperly.

Joystick needs to be calibrated. Calibrate joystick with programmer. If this does not

controller unplugged or damaged.

Possible water, salt, or urine damage.

Poor battery terminal connection.

Bad joystick connection. Check all joystick connections. Refer to wheelchair

Bad wiring harness connection or blown fuse.

Battery charger connected to joystick.

Electrical malfunction. Contact Invacare.

Contact Dealer/Invacare to have controller reprogrammed.

work, replace joystick. Refer to Joystick Throw page 33 for calibration information.

Check all joystick connections. Refer to wheelchair Owner’s Manual. If damage is found, replace joystick.

Replace wiring harness. Refer to wheelchair Owner’s Manual.

Have clean terminals. Refer to wheelchair Owner’s Manual.

Owner’s Manual.

Replace wiring harness. Refer to wheelchair Owner’s Manual.

Unplug battery charger.

Part No 1110532 9 MK5™NX™Electronics

SECTION 3—TROUBLESHOOTING

Wheelchairs With Elevate Systems

SYMPTOM PROBABLE CAUSE SOLUTIONS

Seating system not functioning or working intermittently.

Wheelchair slows while driving. Elevating seat is elevated.

Wheelchair drives at full speed when seat is elevated.

Low batteries. Charge batteries. Refer to the seating system

Faulty electrical connection.

Blown fuse. Replace wiring harness. Refer to the seating system

Seat has been driven under a heavy load for an extended period of time.

Open Motor connection/ Motor locks disengaged.

The elevating seat is equipped with a speed reduction safety mechanism. While the seat is in an elevated position, the safety feature slows the speed of the wheelchair by 80%.

Faulty electrical connection.

Owner’s Manual.

Check all connections.

Owner’s Manual.

Allow time for the electronics to cool down (Light Duty Use). Leave power on, and do not activate powered seating functions for at least 3 minutes.

Check all motor connectors.

Make sure motor locks are engaged.

Return the seat to its lowest position. Refer to the seating system Owner’s Manual.

Check all connectors.

Malfunctioning seating system controller.

Check for error codes. Refer to Performance Adjustments on page 19 for the correct performance adjustment menu descriptions. Replace seating system controller, if necessary. Contact Invacare.

MK5™NX™Electronics 10 Part No 1110532

SECTION 4—JOYSTICK DESCRIPTIONS

SPJ™and CSPJ™Joystick Switches and Indicators

NOTE: For the following information, refer to FIGURE 4.1.

SPJ Joystick

Joystick

Speed Control Knob

On/Off

Toggle Switch

Information

Gauge

CSPJ Joystick

On/Off

Button

Speed

Control Knob

Joystick

Charger/

Programming Input

To Controller

Horn

Multi-Function

Charger Port

To Controller

FIGURE 4.1 SPJ™and CSPJ™Joystick Switches and Indicators

On/Off Switch

SPJ Joysticks

This toggle switch is located at the rear of the joystick housing.

CSPJ Joysticks

This button is located on top of the joystick housing at the rear of the joystick.

Part No 1110532 11 MK5™NX™Electronics

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. Turn the switch counterclockwise to decrease the speed of the wheelchair.

Joystick

The joystick has proportional drive control, meaning that further the joystick is pushed from the upright (neutral) position, the faster the wheelchair moves. Your top speed, however, is limited by the setting of the speed-control knob and programmed settings.

To slow the wheelchair to a stop, simply release the joystick. The wheelchair has automatic speed and direction compensation to minimize corrections.

Charger/Programming Input

Located at the front of the joystick housing. This provides easy access for charging the wheelchair batteries. This port also serves as the Remote Programmer Communication connection.

Information Gauge Display

The Information Gauge Display is located on the front of the joystick housing. It provides the following information to the user on the status of the wheelchair -

1. Power is on.

2. True state-of-battery-charge, including notification of when the battery requires charging:

A. GREEN LED is lit, indicating well charged batteries.

B. Only AMBER LEDs are lit, indicating batteries are moderately charged. Recharge

batteries before taking a long trip.

C. Only RED LED is lit, indicating batteries are running out of charge. Recharge

batteries as soon as possible.

3. Program, inhibit or charge modes.

4. Fault indication (Flash Codes).

The Information Gauge display also serves as a system diagnostic device when a fault is detected by the control module. A specific number of flashes of the LEDs indicate the type of fault detected. Refer to the following table of the diagnostic indications of the wheelchair status.

MK5™NX™Electronics 12 Part No 1110532

+ 28 hidden pages