On-Line Technical Training Course

On-Line Technical Training Course
On-Line Technical
Training Course
Roadrunner Mobility
Corporate Office
717 Lingco Drive Suite 211
Richardson, TX 75081
1800-467-2668
www.roadrunnermobility.com
Service & Parts Education
TABLE OF CONTENTS
Introduction - Welcome to ISP Technical Education
Contact List .......................................................................................................................................... 1
Recommended Tool List ....................................................................................................................... 2
Service Manual List .............................................................................................................................. 3
What Consumer Need To Know About Power Mobility Products .......................................................... 4
Power Wheelchair Troubleshooting Procedure .................................................................................... 6
Section 1 - Battery and Charging Systems
Battery Size Chart ............................................................................................................................. 1-1
Sealed Lead Acid & Gel Cell Deep Cycle Batteries ........................................................................... 1-2
Cycle of Deep Cycle Batteries ........................................................................................................... 1-3
Sealed Battery Break-in Procedure ................................................................................................... 1-4
Battery State of Charge ..................................................................................................................... 1-5
Field Load Test Procedure ................................................................................................................ 1-6
Hand Held Load Test Procedure ....................................................................................................... 1-7
Charging Batteries (6 Rules to Remember) ....................................................................................... 1-8
On-Board Fully Automatic Battery Chargers ..................................................................................... 1-9
Off-Board Fully Automatic Battery Chargers ................................................................................... 1-10
Battery Charger Troubleshooting Tips ............................................................................................. 1-11
Wiring Harness Testing ................................................................................................................... 1-12
Section 2 - Power Drive Systems
M1 and M2 Error Codes and Motor Troubleshooting ......................................................................... 2-1
DC Motor Identification ...................................................................................................................... 2-2
Permanent Magnet DC Motors (How does it work) ............................................................................ 2-3
DC Motor Component Identification ................................................................................................... 2-4
Gearbox and Couplers ...................................................................................................................... 2-5
DC Motor Testing .............................................................................................................................. 2-6
2-Pole Motor Brush Removal and Replacement ................................................................................ 2-7
2-Pole Schmitt and 4-Pole Motor Brush Removal/Replacement ....................................................... 2-8
Electromechanical Parking Brake Testing ......................................................................................... 2-9
2-Pole Motor Brake Replacement .................................................................................................... 2-10
4-Pole Motor Brake Replacement .................................................................................................... 2-11
GB Motors ....................................................................................................................................... 2-14
GB Motor Calibration Procedure ..................................................................................................... 2-15
Section 3 - MK6i Consumer (NX) Electronics
MK6i Consumer (NX) Electronics ...................................................................................................... 3-1
MK6i Single Purpose Joystick (SPJ+) ............................................................................................... 3-2
MK6i SPJ+ Joystick Cable & Controller Cable .................................................................................. 3-3
MK6i Control Modules ....................................................................................................................... 3-4
MK6i Programmer ............................................................................................................................. 3-5
MK6i NX Performance Adjust Menu .................................................................................................. 3-6
MK6i NX Programs Menu .................................................................................................................. 3-7
MK6i NX Others Menu ....................................................................................................................... 3-8
MK6i NX Error Codes Description ..................................................................................................... 3-9
Power Mobility Guide
Rev. 1/09 TER
Service & Parts Education
TABLE OF CONTENTS
Section 4 - MK6i Troubleshooting and Diagnostics
MK6i Troubleshooting and Diagnostics ............................................................................................. 4-1
Battery Troubleshooting Guide .......................................................................................................... 4-2
Charger Troubleshooting Guide ........................................................................................................ 4-3
Wiring Troubleshooting Guide ........................................................................................................... 4-4
Motor/Gearbox/Brakes Troubleshooting Guide ................................................................................. 4-5
MK6i Formula TRE & CG Troubleshooting Guide ............................................................................. 4-8
MK6i PTO Plus & Super Low Troubleshooting Guide ....................................................................... 4-9
MK6i NX Troubleshooting ................................................................................................................ 4-10
MK6i NX Error Code Description ..................................................................................................... 4-12
MK6i EX Troubleshooting ................................................................................................................ 4-13
MK6i EX Diagnostics Menu ............................................................................................................. 4-15
MK6i EX Error Code Description ..................................................................................................... 4-16
Understanding Current Rollback ...................................................................................................... 4-20
Understanding Torque & Power Level ............................................................................................. 4-21
Section 5 - Scooter Troubleshooting
Troubleshooting Procedure ............................................................................................................... 5-1
Rear Base Assembly and Battery/Charger Box Inspection ................................................................ 5-2
Motor and Brake Testing ................................................................................................................... 5-3
Front Console and Controller Inspection ........................................................................................... 5-4
Throttle Pot Calibration Procedure .................................................................................................... 5-5
Programming Instructions .................................................................................................................. 5-7
Scooter Specifications ..................................................................................................................... 5-10
Error Code List ................................................................................................................................ 5-11
Power Mobility Guide
Rev. 1/09 TER
Service & Parts Education
CONTACT LIST
Technical Support Hotline Calling Tips
1-800-832-4707
5 Please write down the model and serial number.
5 Please write down the software version and error codes.
5 It is necessary that you are with the product, before contacting technical support.
5 Before troubleshooting any chair, make sure the batteries are in good condition.
Miscellaneous Contacts:
Phone and website
MK Battery
1-800-372-9253
www.mkbattery.com
TASH
1-800-463-5685
www.tashinc.com
ASL
1-800-626-8698
www.asl-inc.com
Peachtree
1-830-693-6030
www.asl-inc.com
Magitek
1-800-347-9928
www.magitek.com
New Abilities
1-800-829-8889
www.newabilities.com
Therafin
1-800-843-7234
www.therafin.com
U.S. Rehab
1-800-987-7342
www.usrehab.com
Motion Concepts
1-888-433-6818
www.motionconcepts.com
The Aftermarket Group/TAG
1-888-824-8200
www.aftermarketgroup.com
Invacare
1-800-333-6900
www.invacare.com
Need access to Invacare’s Tech Zone for helpful tips and more login using
Username = techzone
Password = invacare
Power Mobility Guide
Rev. 1/09 TER
1
Service & Parts Education
RECOMMENDED TOOL LIST
Remote Programmer (PN 1109091)
Digital Multimeter
Scooter Programmer (PN 1124242)
Flashlight
Remote Programmer Mk6i (PN 1142215)
Pitch Angle Gauge
Professional SD Card (PN 1144515)
Basic SD Card (PN 1144516)
Wire Crimping Pliers
Electrical Connector Assortment
Tire Tools (available from TAG)
Hex T-Handle Wrenches (Metric/SAE)
1/4” Socket Set (Metric/SAE)
3/8” Socket Set (Metric/SAE)
1/2” Socket Set (Metric/SAE)
3/8” & 1/2” Torque Wrench
SAE Wrench Set ¼”-1”
Metric Wrench Set 4mm-19mm
Channel Locking Pliers
Vise Grip Pliers
Dead Blow Hammer
Screw Driver Set
Small Pry Bar Set
Tape Measures
Tie Wrap Assortment
Shrink Wrap Assortment
Brush Chalk
Scissors/Razor Blade Knife
6” & 12” Crescent Wrench
Tire Gauge
Hacksaw
Bench with Vise and Bench Grinder
Compressed Air Source
Drill with Drill Bits
Remote Battery Charger 12 volts
Remote 8 amp 24 Volt Charger
Wire Brush
Heat Gun
Small Files
Assorted Fasteners
Soldering Iron
Glue Gun
Safety Items
First Aid Kit
Eye Wash
Safety Glasses
Shop Apron
Rubber Gloves
Antibacterial Cleaner
Lint Free Shop Rags
Back Support Devices
Baking Soda
Anti-Static Strap
Power Mobility Guide
Rev. 1/09 TER
Optional Items for Service Tech’s
Electronic Temperature Gauge
Wheelchair/Scooter Lift
Computer with Internet Access
Instant Camera or Digital Camera
Cell Phone
Portable Van Ramps
Invacare IVS Software
1/4” and 3/8” Torque Wrench
RPM Gauge for Motors
Line Amp Gauge for Motor Leads
2
Service & Parts Education
SERVICE MANUALS
You can download a FREE copy of all manuals from our website
at www.invacare.com, or place an order with our parts department
Service Manual
Part Number
Lynx/Panther Scooters
1091860
Invacare Scooter 300 & 400 (HMV)
1122167
Invacare Scooter 220 (HMV)
1125065
At’m & At’m QT
1125078
Pronto M41
1145724
Pronto M50/51/61
1125075
Pronto M71
1118377
Pronto M91/94
1125038
Pronto R2 & R2 - 250
1098315
Formula PTO Plus
1125031
Formula TRE
1123820
Adjustable ASBA Seating
1143238
Power Mobility Guide
Rev. 1/09 TER
3
Service & Parts Education
WHAT CONSUMERS NEED TO KNOW ABOUT
POWER MOBILITY PRODUCTS
(Recommendations courtesy of Invacare & MK Battery)
Batteries:
* ALWAYS follow the manufacturers recommendations for battery type and
size.
* ALWAYS use Deep Cycle batteries, due to the fact that they are designed
to be discharged and recharged on a regular basis.
* Cold Cranking Amp or Marine type batteries are for starting purposes
only, and are not intended for power mobility products.
* Deep Cycle batteries are FAA and DOT approved and are the safest for
transport both private and public.
* Deep Cycle batteries are Maintenance Free batteries, NEVER open or modify.
* Deep Cycle batteries DO NOT have a memory.
* NEVER allow Deep cycle batteries to completely discharge.
* The depth of discharge does effect the life of Deep Cycles batteries, the
greater the discharge the sooner they will need replaced.
Charging Systems:
* Use only manufacturers charger on all models, and no more than 8
amps MAX.
* Charge Deep Cycle batteries frequently to maintain a high level of
charge.
* Charge mobilty products with the power “ON” to reduce current rollback.
* All Deep Cycle batteries have a Break In Period of 20 days. Charge
power mobility products everyday for the first 20 days reguardless of use.
* Charging of power mobility products may take 8 hours under normal use
and up to 16 hours with severely discharged products.
* NEVER top off power mobility products with short charges, once recharging
begins it must be allowed to finish. This could take +10 hours.
* NEVER leave charger connected for times exceeding 36 hours.
* NEVER charge power mobility products with both an ON-BOARD & OFFBOARD chargers at same time.
* DO NOT use an extension cord to charge power mobility products.
* DO NOT charge power mobility products outside.
* Chargers may get warm, if excessive heat is detected, discontinue and call
dealer.
Storing Batteries:
All batteries should be fully charged before putting the unit away for storage (regardless
of storage lengthof time). It is also recommended that you disconnect the main power
source, to avoid the possibility of discharging the batteries (which could cause permanent damage).
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Rev. 1/09 TER
4
Service & Parts Education
WHAT CONSUMERS NEED TO KNOW ABOUT
POWER MOBILITY PRODUCTS
(Recommendations courtesy of Invacare & MK Battery)
Other important information:
* Check all air tires often to ensure proper level of inflation. This will result
in better product performance.
* DO NOT engage or disengage motor locks/clutches with the power in the
“ON” position.
* DO NOT operate power mobility products on roads, streets or highways.
* DO NOT travel up or down ramps, inclines or slopes greater than 9
degrees.
* DO NOT attempt to traverse inclines with water, ice or oil film on it.
* DO NOT enter or exit a power mobility product with power in the “ON”
position. Injury may occur.
* DO NOT expose any power mobility product to any liquids or leave in a
damp area for prolonged time. This could cause rusting and corrosion
that will damage the product and void the limited warranty.
* DO NOT lift power mobility products by any removeable parts. Damage
or injury may occur.
Power Mobility Guide
Rev. 1/09 TER
5
Service & Parts Education
POWER WHEELCHAIR TROUBLESHOOTING PROCEDURE
1. Check the static battery voltage with a digital multimeter.
__________ Static DC Volts at Charger Connector
2. Test battery charger to ensure that it is functioning properly.
__________ DC Voltage at Batteries with Charger ON
3. Check all fuses and connections for damage.
• Battery Box Fuses
• Wiring Harness Fuses
• Motor Connections
• Joystick Connections
• Control Module Connections
• Power Seating Connections
OK
OK
OK
OK
OK
OK
Bad
Bad
Bad
Bad
Bad
Bad
4. Test both motor and brake components with a digital multimeter.
• Test Motor Connection
.5 - 5 Ohms Good (higher Ohm reading indicate internal problems).
RWD
CWD
RT M1________ohms LT M2_______ohms
M1 Motor Brushes OK
•
Bad
LT M1_________ohms
RT M2________ohms
M2 Motor Brushes
OK
Bad
Test Brake Coil (make sure the lever is engaged)
40 - 80 Ohm Ranges Good (O.L. indicates an internal problem).
__________ M1 Motor Ohms
__________ M2 Motor Ohms
M1 Micro Switch
M2 Micro Switch
OK
Bad
OK
Bad
5. Check the Others Menu for any error codes with a remote programmer.
• First 3 Error Codes ____________________________________________
Power Mobility Guide
Rev. 1/09 TER
6
Battery and Charging Systems
Visit the Technical Zone at www.invacare.com
or Call us Toll FREE at 1-800-832-4707
Service & Parts Education
BATTERY SIZES CHART
Power Chairs
Qty.
Volts
Battery Type
*TDX3
*TDX4
*TDX5
TDXSP
TDXSC
TDXSI
*TDXSR
TDXSpree
2/3
2/3
2
2
2
2
2/3
2
12
12
12
12
12
12
12
12
22NF/GR24
22NF/GR24
22NF/GR24
22NF
U-1
22NF
22NF/GR24
22NF
*2G Storm Series
*3G Storm Series
2/3
2/3
12
12
22NF/GR24
22NF/GR24
Ranger II RWD
Ranger II JR.
P7E/P9000 XDT
Excel
P9000
Power Tiger
Pronto M6
Xterra GT CWD
Pronto M41/50
Pronto M51/61
Pronto M71/R2
Pronto M91/M94
Nutron Series
2
2
2
2
2
2
2
2
2
2
2
2
2
12
12
12
12
12
12
12
12
12
12
12
12
12
22NF
U-1
U-1
22NF
U-1/22NF
22NF
U-1
22NF
U-1
U-1
U-1/22NF
22NF
U-1/22 NF
ATM/Adventure SX-3
Lynx L-3
Lynx L-3X
Lynx L-4
220/300/400
Lynx SX-3P
Lynx SX-3
Lynx LX-3
Adventure LX-3
Lynx LX-3 Plus
Panther LX-4
Panther MX-4
2
2
2
2
2
2
2
2
2
2
2
2
12
12
12
12
12
12
12
12
12
12
12
12
12AH
12AH
36AH
12AH
12AH or U1
17AH
17AH
31AH
U-1
31AH
31AH
40AH
*NOTE: TDX chairs equipped with a Vent Tray will require 3 22NF batteries. The third
battery will supply power to the Ventilator (wiring harness shipped with base).
Power Mobility Guide
Rev. 1/09 TER
1-1
Service & Parts Education
SEALED LEAD ACID & GEL CELL DEEP CYCLE BATTERIES
How does maintenence free batteries work?
A Gel cell is a “recombinant” battery. This means that the oxygen that is normally produced
on the positive plate in all lead-acid batteries recombines with the hydrogen given off by
the negative plate. The “recombination” of the hydrogen and oxygen produces water
(H20), which replaces the moisture in the battery. Therefore, the battery is
maintenance-free, as it never needs water replenishment.
Source:
MK Battery Technical Manual, www.mkbattery.com
How does a Series Connection work with two 12V Batteries?
Circuit (Series) - A circuit which has only one path for the current flow. Batteries arranged
in series are connected with negative of the first to positive of the second, negative of the
second to positive of the third, etc. If two 12-volt batteries of 50 ampere-hours capacity
each are connected in series, the circuit voltage is equal to the sum of the two battery
voltages or 24-volts, and the ampere-hour capacity of the combination is 50
ampere-hours.
Power Mobility Guide
Rev. 1/09 TER
1-2
Service & Parts Education
CYCLE OF DEEP CYCLE BATTERIES
DISCHARGE
RECHARGE
A battery CYCLE is a discharge and recharge of a battery. Once a recharging part of the
cycle begins the charger must be able to reach its cut off voltage. Frequent short charges
will decrease the life of batteries by reducing the number of cycles in them.
**ALL SEALED LEAD ACID AND GEL CELL DEEP CYCLE
BATTERIES DO NOT HAVE A MEMORY.**
DOES THE DEPTH OF THE DISCHARGE AFFECT BATTERY LIFE?
YES! The greater the load on the batteries, the sooner they will have to be replaced.
*Typical Gel Cell Cycling Ability
vs. Depth of Discharge
Capacity Discharged
Typical Life Cycles
100% ................................................. 500 (15 mo.)
*75% .................................................. 750 (2 yrs.)
50% .................................................. 1100 (3 yrs.)
*75% is the average capacity withdrawn for an active user.
*NOTE: Consumers may experience longer or shorter battery life, depending on driving/
charging habits, terrain, temperature, programming values, and 24 volt accessories in the
system. Instructing the consumer is IMPORTANT for maintaining the batteries.
Power Mobility Guide
Rev. 1/09 TER
1-3
Service & Parts Education
SEALED BATTERY BREAK-IN PROCEDURE
A battery CYCLE is a discharge and a complete recharge. A new battery out of the box has
2 cycles completed prior to initial use and about 60-65% capacity while continuing to grow
in capacity in as many as 20 cycles. Though after 10 cycles a gel battery should reach
90% capacity or higher.
When educating your customers about their new batteries, it is very important that you
inform them about the Break-in Procedure and recharge cycle.
Break-in Procedure:
All deep cycle gel batteries require a complete recharging (regardless of use) for the first
20 days of use in any power mobility product. Failure to do this could shorten the driving
range, and may effect the overall life of the batteries.
120%
Peak Capacity
100% 20 Cycles
90% 10 Cycles
Cap
acit
y wi
ll de
cline
afte
r pe
ak p
erfo
rma
nce
is
Overall Battery Life
60% 2 Cycles
ach
eive
d
The reason for this procedure, is that if either battery is not FULLY charged it will begin to
sulfate. This happens because Lead Sulfate produced in the discharge process is not
completely removed and begins to set up crystalline structures, which will not return to acid
and lead in the recharge process. This typically is the reason for reduced capacity (range)
in fairly new batteries.
Reduced capacity (range) can be due to a mechanical failure (charger, connection, wiring,
etc.) or a consumer problem (too short a charging routine, incomplete charging). Charging
is also not a one time function. A batteries depth of discharge (resistance level less than
50%) affects its ability to accept full charge current (100%) when in the initial charge
process. Also time of use does not correspond directly to recharge time requirements.
Source:
MK Battery Technical Manual, www.mkbattery.com
Power Mobility Guide
Rev. 1/09 TER
1-4
Service & Parts Education
BATTERY STATE OF CHARGE
A battery state of charge or a static voltage reading is a test of the battery voltage while the
power mobility product is at rest (not driving). Use a digital multimeter to check the static
battery voltage by:
•
Inserting the multimeter leads into pins 1 and 2 of the charger/programmer port on
the front of the driver control. (see diagram below)
•
If you receive a negative reading on the meter, switch the leads to the opposite pins.
•
Do not allow the leads to touch each other while connected this will cause damage
to the multimeter and driver control.
•
A relatively good reading of a set of gel batteries should display at least 25.0 volts
or higher. (+75%)
Charger Connector
3
1
2
Static Battery
Voltage Test Point
Pin 1 = positive (+)
Pin 2 = negative (-)
GEL/SEALED Lead Acid Type Deep Cycle
Charge Level Specific Gravity Static Reading
On Charge
100%
N/A
25.6 VDC
28.8 VDC
75%
N/A
25.0 VDC
28.2 VDC
50%
N/A
24.6 VDC
27.8 VDC
25%
N/A
24.4 VDC
27.4 VDC
DISCHARGED
N/A
24.2 VDC
27.0 VDC
If the batteries are not fully charged or appear weak, recharge them overnight before
performing a load test.Severely discharged batteries could take up to 10-16 hours to
recharge back up to 100%. Severely discharged batteries could also rise rapidly, giving
the charger a false reading causing the charger to shut off too soon.
Power Mobility Guide
Rev. 1/09 TER
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Service & Parts Education
FIELD LOAD TEST PROCEDURE
Old batteries lose their ability to store/release power, due to increased internal resistance.
This means that as you try to take power from the battery, some of that power is used up in the
process of passing through the battery, resulting in less voltage at the posts. The more power
drawn, the lower the voltage available. When this lost voltage drops (as a pair) 0-2 volts the
batteries are GOOD, 2-2.5 their POOR, and 2.5 or higher BAD.
Testing under a load is the only way to spot this problem. While special battery load testing
equipment is available, it is costly and difficult to transport.
Use a digital multimeter to check battery charge level at the charger connector. It is located
on the side of the wheelchair frame or at the front of the joystick or display.
Field Load Test Procedure
1. Ensure that power is OFF.
2. Make sure battery voltage is above 25.0 VDC.
3. Remove the footrests from the wheelchair, and seat yourself into the chair. Place yourself
and the chair in front of a stationary object (door jam, or a brick wall).
4. Insert your multimeter leads into the charger connector on the wheelchair (see Figure 1).
Most digital multimeters are not affected by polarity, however, analog meters (meters with
swinging needles) can be and should be used carefully. A good meter reading should be
25.0 VDC or higher.
5. Have two (2) individuals (one [1] on each arm) apply as much downward pressure as
possible on the arms of the wheelchair.
6. Turn the power ON and push the joystick forward, trying to drive the wheelchair through
the stationary object. This puts a heavy load on the batteries as they try to push through
the stationary object. Read the meter while the motors are stalling to determine the
voltage under a load.
NOTE: If the voltage drops to less than 23.0 volts from a pair of fully charged batteries
while under load, they should be replaced regardless of the unloaded voltages.
Figure 1.
CAUTION
Avoid stalling motors for longer than 15
seconds. Stalling the motors for more
than 15 seconds may cause hot spots
on the commutator plates, or cause the
chair to go into 100% Current Rollback.
3
1
2
Static Battery
Voltage Test Point
MK5 Charger
Connector
Power Mobility Guide
Rev. 1/09 TER
Charger Connector
on chair base MKIV
1-6
Service & Parts Education
HAND HELD FIELD LOAD TEST PROCEDURE
The tester draws current from the battery while measuring its voltage level. The voltage
level of a good battery will remain relatively steady under load, but a defective battery will
show a rapid loss in voltage.
1.
2.
3.
4.
Turn the power switch to the off position.
Make sure the static battery voltage is above 25.0 VDC.
Disconnect batteries from equipment.
Connect negative (black) clamp to the negative (NEG, N,-) battery post. Connect
positive (red) clamp to positive (POS, P, +) battery post. “Rock” clamps back and forth
to insure a good electrical connection. CAUTION: do not let the positive and negative to
make contact.
5. With clamps connected, tester’s meter will indicate battery’s STATE OF CHARGE. If
state of charge is less then 12 volts, the battery should be recharged before load
testing. If recharging does not bring voltage to 12.4 or higher battery is defective. If
meter needle is off scale to the left, check for loose or reversed clamps; otherwise
battery is defective.
6. Depress load switch for 10 seconds.
7. Read meter at the end of 10 seconds - with switch depressed. Refer to LOAD TEST
ANALYSIS CHART.
LOAD TEST ANALYSIS CHART
Meter Action >10Seconds
Battery Condtion
Needle in Green
GOOD
Needle in Yellow
WEAK/CHARGE & TEST
Needle in Red
BAD/REPLACE
NOTE: Read all of the supplied instructions for analyzer before use.
Power Mobility Guide
Rev. 1/09 TER
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Service & Parts Education
RULES FOR CHARGING BATTERIES
Rule #1 - New batteries MUST be fully charged prior to initial use. There have been
occasions when new batteries have failed out of the box. This will also help in verifing that the
charging system is functioning properly. Save yourself an unnecessary service call and
charge the batteries the night before your delivery, or before the customer is scheduled to
pick up their chair.
Rule #2- New batteries DO have a break-in period of 20 cycles. Regardless of use, recharge the batteries every night for the first 20 days. After the 20 day break-in period, recharge the batteries on a regular basis.
Rule #3 - Be aware that if your customer had lead acid batteries and you are replacing them
with gel batteries, please double check their battery charger. If they have a dual mode charger,
then make sure the switch (Schauer and Lester models only) is in the correct position prior to
initial use (permanent damage can be done to a set of batteries if not set correctly, see the
Owner’s Manual or call Invacare Technical Support if not sure). If the customer does NOT
HAVE a dual mode charger, then they will need to upgrade to a newer style dual mode charger.
Rule #4 - Allow at least eight (8) hours for normal charging. Larger batteries (greater than 55
ampere-hours) or severely discharged batteries may require up to sixteen (16) hours to be
properly charged and equalized. If the charger operates for sixteen (16) hours and is unable to
fully charge the batteries, an internal timer turns the charger off. Perform a load test on the
batteries to determine if replacements are needed.
Rule #5 - The range per battery charge (using recommended batteries) should be
approximately 5 to 9 hours of typical operation. Extensive use on inclines may substantially
reduce per charge mileage. A good rule of thumb, is for every hour of actual drive time, you
should equal that amount of time or exceed it when recharging.
Rule #6 - Charge the batteries through the power mobility product with the power “ON” to
help eliminate current rollback at start up. This resets overheat timer and thermastat to
normal levels. Refer to the Electronics Service Manuals for further explanation.
Power Mobility Guide
Rev. 1/09 TER
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Service & Parts Education
ON-BOARD FULLY AUTOMATIC BATTERY CHARGERS
All power wheelchairs Invacare delivers today have some form of Fully Automatic Battery
Charger as standard equipment. The term “Fully Automatic” means that once a recharge
cycle begins, the charger will stay on until it reaches its cutoff voltage point. Once the cutoff
voltage is noticed by the charger, the charger will automatically stop charging the batteries.
Fully Automatic Chargers also have a start-up voltage reference point. The term “Start-up
Voltage”, means that once the battery charger is plugged in and turned ON, it must notice a
minimum voltage in order to stay on and recharge the batteries.
24 Volt 2 Amp Battery Charger (on-board)
2 amp On-board battery chargers have a start-up voltage of 2022 VDC. These chargers have no on/off switch or fuses, also it
determines battery type and adjusts the cut off voltage accordingly. These chargers also have 1 LED that light up to inform the
user that the power is on and the charging condition. These
chargers are normally found on scooters.
24 Volt 3 Amp Battery Charger (on-board)
3 amp On-board battery chargers have a start-up
voltage of 18-22 VDC. These chargers have no on/
off switch or fuses, also it determines battery type
and adjusts the cut off voltage accordingly. These
chargers also have 2 LED’s that light up to inform
the user that the power is on and the charging
condition. These LED’s also will show faults in the
system. These chargers are normally found on
scooters and low end consumer power chairs.
24 Volt 5 Amp Battery Charger
(on-board)
5 amp On-board battery chargers have
a start-up voltage of 18-22 VDC. These
chargers have no on/off switch or fuses,
also it determines battery type and
adjusts the cut off voltage accordingly.
These chargers also have 1 or 2 LED’s
that light up to inform the user that the
power is on and the charging condition.
These LED’s also will show faults in the
system. These chargers are found on
the high end consumer power chairs.
NOTE: Lower Amp charger require extended charging time if the batteries are less than 25%.
Power Mobility Guide
Rev. 1/09 TER
1-9
Service & Parts Education
OFF-BOARD FULLY AUTOMATIC BATTERY CHARGERS
24 Volt 8 Amp Lester Battery Charger
Lester Dual Mode Charger has a start-up voltage
of 18-22 VDC.This charger has an on/off switch
and a mode switch to change the cut off voltage
depending on battery type. This Lester Charger
has 2 led’s that light up to inform the user that the
power is on and the charging condition. These
led’s also will show faults in the system.
24 Volt 8 Amp CTE Battery Charger
CTE Battery Charger has a start-up voltage of 8-10 VDC.
The CTE Battery Charger has no on/off switch or fuses,
also it determines battery type and adjusts the cut off
voltage accordingly. The CTE Battery Charger is a “Smart
Charger” which means that the charger will begin charging
anytime the batteries require a charging and will
automatically transition to “Sleep Mode” when the batteries
do not require a charge, therefore this charger can be
connected to the batteries Indefinitely (though not
recommended). This charger has 4 led’s that light up to
inform the user that the power is on and the charging
condition. These led’s also will show faults in the system.
ON-BOARD CHARGERS
Advantages:
- no switches to confuse user
- easier transport, stays with product
OFF-BOARD CHARGERS
Advantages:
- easier to see status lights
- faster charge times
Disadvantages:
- harder to see status lights
- slower charging times
Disadvantages:
- heavier, harder to transport
- user may notice charger heating up
Power Mobility Guide
Rev. 1/09 TER
1-10
Service & Parts Education
BATTERY CHARGER TROUBLESHOOTING TIPS
Problem
No power
Possible Cause
Bad power cord
Bad AC outlet
Blown internal fuse
Switch not turned ON
Bad LED on panel
Internal damage
Corrective Action
Replace power cord
Replace outlet
Replace fuse
Turn ON power switch
Send in for repair
Send in for repair
Charger ON batteries
not charging
Static battery voltage too low
(as a pair)
Test batteries or
replace if necessary
Charging cycle starts
then stops
Bad Connection
Replace connector
or replace wiring
harness.
Short charge time
One or both batteries
may be bad
Test batteries or
replace if necessary
NOTE: Read all instructions provided with the charger and view the diagnostic codes
printed on the charger for LED indicator explanation.
Power Mobility Guide
Rev. 1/09 TER
1-11
Service & Parts Education
WIRING HARNESS TESTING
1. Check the wiring harness for visible damage, broken/loose connections, and corrosion.
If any damage is found replace harness. If the damage is due to corrosion, clean all
connections thoroughly. Corrosive connections can create high resistance, which could
cause problems with the electronics.
2. Check all fuses in the system, including the fuses inside the battery boxes.
3. When checking the wiring with your multi meter, be sure to move the connection around
while testing. By moving the wiring around while your test leads are still in place, you
will notice intermediate connection problems.
TECHNICIANS NOTE: Use your multi meter to
perform an audible continuity test, or take an Ohm
reading (should see less than 1 Ohm). Check all
connections for damage or corrosion, if either is
noticed replace wiring with OEM parts.
TECH TIP: If the wiring was damaged due to incontinence,
replace immediately. Cut an old pneumatic tire tube into six
inch sections, and slip them over the new connections and
tie wrap each end to protect the new connections.
Invacare Corporation has initiated a field correction involving certain Invacare power wheelchairs manufactured from 1988 through June 2000. Some of these power wheelchairs utilize a battery box harness
and a charger harness that have the remote possibility to short and cause a fire. While the likelihood of
this occurring remains remote, all potential for fire must be eliminated. If you have a consumer who has
purchased a power wheelchair during these time periods, please contact Invacare for details on how to
get the new components installed.
Power Mobility Guide
Rev. 1/09 TER
1-12
Power Drive Systems
Visit the Technical Zone at www.invacare.com
or Call us Toll FREE at 1-800-832-4707
Service & Parts Education
M1 AND M2 MOTOR ERROR CODES
(E09 AND E10)
“IMPORTANT”
RWD chairs will display Error Codes and represent them in the following manner.
RWD M1 = RIGHT SIDE MOTOR/BRAKE ERROR
RWD M2 = LEFT SIDE MOTOR/BRAKE ERROR
CWD chairs will display Error Codes and represent them in the following manner.
CWD M1 = LEFT SIDE MOTOR/BRAKE ERROR
CWD M2 = RIGHT SIDE MOTOR/BRAKE ERROR
Troubleshooting Tips:
• Before unplugging the motor lead to test for resistance, note the orientation of each
lead plugging into the motor slots on the controller.
• Mark leads if necessary going into the controller “M1” and “M2”.
• Ohm each connector one at a time to ensure that they don’t get mixed up when plugging
them back into the controller.
RWD Storm Series
Power Mobility Guide
Rev. 1/09 TER
CWD TDX Series
2-1
2-12-1
Service & Parts Education
DC MOTOR IDENTIFICATION
Invacare has two types of motors: pole motors and GB motors. A Pole motor is a motor
with brushes that make connection between the communtator and the motor connection.
Pole motors are further defined by the number of motor brushes. 2 Pole motors have either
2 internal or external motor brushes. 4 Pole motors all have 4 external brushes and have a
removable gearbox while coming geared standard or for heavy duty applications. GB
motors have “NO” brushes or gears and is considered an electromagnetic motor.
4 POLE DC MOTORS
2 POLE DC MOTORS
Schmitt motor with 2 external
brushes
High speed or H/D motors
with 4 external brushes
GB MOTORS
Older 2 pole motor with 2 internal
brushes
GB motor with NO
brushes or gearbox
M41 motor with 2 internal
brushes
TECH TIP: Knowing the difference in the motor types and how the chair was set up
originally will help in replacing the motor with the correct one, and choosing the correct
programming profile.
Power Mobility Guide
Rev. 1/09 TER
2-2
Service & Parts Education
PERMANENT MAGNET DC MOTORS
DC Motor Operation - Electrical current supplied by the power wheelchair batteries passes
through the motor brushes to the windings, and energizes the coil and laminations thus it
becomes an electrical magnet. One end magnetizes as the north pole, and the opposite
as the south pole. The north pole windings are positioned next to the motor casings north
pole permanent magnets, and the south pole of the windings are positioned next to the
motor casings south pole permanent magnets. Armature rotation is caused by like poles
repelling, and opposite poles attracting one another. The direction, speed, torque, and
braking of the motor is controlled by the wheelchairs electronics.
North Pole Magnet
Magnetic Field Lines
Motor Brush
-
North Pole Armature
Communtator
Segments
+
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
Windings and
123456789012345678901234567890121
123456789012345678901234567890121
Laminations
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
123456789012345678901234567890121
End of motor shaft that
connects to the gearbox
South Pole Armature
Motor Brush
Magnetic Field Lines
South Pole Magnet
Power Mobility Guide
Rev. 1/09 TER
2-3
Service & Parts Education
DC MOTOR COMPONENT IDENTIFICATION
(4-Pole Shown in Illustration)
Gearbox
Motor Coupler
Brush Housing Cap
Motor Housing
Motor Brush
Brake Coil w/ Lever
Brake Lever Tip
Brake Cover
Brake Lever Sleeve
Laminations
(may be straight or skewed)
Windings
Bearings
Motor Shaft
Drive Nut
Bearings
Communtator
Segments
Power Mobility Guide
Rev. 1/09 TER
2-4
Service & Parts Education
GEARBOX AND COUPLER INSPECTION
Power wheelchairs equipped with a conventional DC motor with a removable gearbox,
come equipped with a serviceable motor coupler. The motor coupler provides a flexible
connection between the motor and the gearbox (it will eventually wear out over time). If it is
never serviced, it may cause severe damage to the motor. To inspect the coupler you will
need to remove the motor (refer to the service manual for motor removal instructions).
Serviceable Motor Coupler
2. Inspect the entire casing for
leaks, including the area
where the motor coupler is
located.
1. Inspect gearbox output
shaft for damage, and
check keyway slot for
damage.
4-Pole Gearbox Drive Ratios
18:1 (High Speed)
or
24:1 (Heavy Duty/High Speed GT CWD)
Power Mobility Guide
Rev. 1/09 TER
2-5
Service & Parts Education
DC MOTOR TESTING AND BRUSH INSPECTION
1. Turn the power OFF on the chair, and disconnect the motor lead you wish to test.
2. Setup your multimeter to take an Ohm reading.
3. Measure the resistance on the two (2) motor contacts, (be sure to rotate motor and take at
least two readings). A normal reading is between .5 to 5 ohms. A reading of 0.L.
(Overload) or in excess of 15 Ohms indicates a problem. High readings are generally
caused by bad contacts, worn brushes, and internal motor problems.
Most motor problems can be fixed by replacing motor brushes, and completing the brush
seating procedure (see page 2-9).
MK5 & MK6i
MKIV
Motor
Motor
Test Point Test Point
4. Inspect brushes and the motor communtator for abnormal wear, replace brushes if
necessary. After replacing brushes refer to page 2-7 for brush seating procedures.
1. Remove brush cap with a flat screwdriver.
2. Remove the brush and inspect it for wear.
When should you replace brushes?
Brushes should be replaced before the tamped shunt wire has a chance to
score the communtator, (and before the brush is at the end of the spring travel).
When a brush has less than a 1/4” of material remaining, it should be replaced.
Also check the shunt wire for any discoloring, and check the spring for damage.
If either is noticed replace the brush. Make sure the brush housing is clean so the
brush can travel freely without any resistance.
Power Mobility Guide
Rev. 1/09 TER
2-6
Service & Parts Education
2-POLE MOTOR BRUSH REMOVAL AND REPLACEMENT
(please order replacement brushes by model)
Please refer to the (specific model) power wheelchair
service manual, for motor removal procedures if necessary.
1. Locate the two phillips head screws at the front of the
motor, and remove these two screws. Remove the long
plastic cap and locate the brush assembly on each side
of the motor.
2. Before removing brushes review these technical tips.
a. The brush spring retainer is not available as a service
part, caution should be used when removing brushes.
b. The screw and washer that attaches the shunt wire to
the motor is not available as a service part, caution
should be used when removing this screw.
3. Remove the screw that attaches the shunt wire to the
motor assembly (please keep the screw and washer to
attach the new motor brush).
4. Release the tension on the brush spring retainer with a
small screwdriver, and position the screwdriver in place
to hold the spring tension. Remove the brush and inspect
the commutator for damage. Place the new brush into
the brush housing, and release the tension on the spring
to hold the brush in place. Attach the shunt wire to the
motor housing by reusing the small screw and washer to
secure the shunt wire. Repeat this procedure for the
opposite brush.
5. Replace the motor cap and screws, and the test motor.
Please review page 2-9 for the brush seating procedure.
Power Mobility Guide
Rev. 1/09 TER
2-7
Service & Parts Education
2 POLE SCHMITT & 4-POLE MOTOR BRUSH
REMOVAL AND REPLACEMENT
(Brush Seating Procedure)
1. Disengage the motors and make sure the power is
off on the display or driver control. With a flat
screwdriver locate the brush cap, and remove the
brush cap by turning the screwdriver counter
clockwise.
2. Before removing the brush for
inspection, place a temporary mark on
the motor casting, and on the top of
the brush. (If not replacing the brush
with a new one, it must be put back
into the brush holder in its original
position.) Remove the brush from
the brush holder and inspect the
brush thoroughly. Look for excessive
wear or chips in the brush, and any
discoloration in the shunt wire.
Place temporary
marks here
3. Install the new brush (or original brush) back into the
brush holder, and replace the brush cap (turn the
screwdriver clockwise to tighten cap). DO NOT
OVERTIGHTEN the brush cap, tighten and loosen
the cap a couple of times to ensure proper seating of
the brush in the brush housing. After inspecting all
brushes on the chair, raise the drive wheels off of the
ground, and block the front casters to secure the
chair. Do not leave the chair unattended when
performing STEP 4.
4. Begin the brush seating process by turning the power
on, and verify again that the drive wheels are off of the
ground. Engage the motors and use a rubber band to
hold the joystick in the forward position. Allow the
motors to run in the forward direction for at least one
hour. After one hour allow the motors to cool off for a
half hour, and repeat this procedure in the reverse
direction. After completing this procedure test drive
the chair, and you should notice an increase in
performance.
Power Mobility Guide
Rev. 1/09 TER
2-8
Make sure the chair is
secure, the wheels will move.
Service & Parts Education
ELECTROMECHANICAL PARKING BRAKE TESTING
(E09 and E10 Error Code Problems)
1. Turn the power OFF, and disconnect the motor lead you wish to test.
2. Setup your multimeter to take an Ohm reading (make sure the motor is in the drive mode).
3. Measure the resistance in the brake coil, by placing your meter leads on the two brake
contacts. A normal reading is in the range of 40 - 80 Ohms (depending on type and
manufacturer of motor). A reading of zero or a very high reading could indicate a damaged brake or an open or poor connection respectively.
4. Check the motor leads for damage or corrosion, if corroded or damaged clean or repair
connection and re-test.
5. The controllers will store an E09 or an E10 error code for brake problems, try switching
the motor leads to ensure that problem is the brake or the controller. If you have an E09
error code present, switch the motor leads. If the error code changes to an E10, the
problem is the brake. If the error code does not change and still states E09, then the
problem is in the controllers brake output section.
6. One last test point will be the micro switch that allows the motor to be in the drive mode or
the free wheel mode. Place your meter leads on the two brake contacts with your meter
set up to read Ohms or Continuity. Engage and disengage the brake lever and watch
your meter, you should see a resistance value, then a near zero reading as the switch
opens and closes. If you have a meter that has an audible continuity feature perform the
same steps, but you will hear and audible come ON then OFF as you open and close the
switch. If the switch fails this test you must replace the brake or the motor.
Brake Lever
Micro Switch
Brake Coil
“IMPORTANT NOTE”
A bad electromechanical brake will damage the brake output section in the controller.
DO NOT connect a bad electromechanical brake to a good controller module.
A bad electromechanical brake MUST be replaced.
Power Mobility Guide
Rev. 1/09 TER
2-9
Service & Parts Education
OLDER 2-POLE MOTOR BRAKE COIL REPLACEMENT
Please refer to the specific model power wheelchair
service manual, for motor removal procedure.
1. Locate the two phillips head screws at the front of the
motor, and remove these two screws. Remove the long
plastic cap to expose the brake coil assembly on the end of
the motor.
2. Locate the two white wires on the brake coil, and cut off
the shrink wrap to expose the wire connectors. Cut the
wires just below the connector to retain the length of the
two black wires on the motor leads.
3. Locate and remove the two phillips head screws that
attach the brake coil to the motor assembly. Remove the
brake coil, clapper plate with springs, friction disk, and
reaction plate. The new brake coil kit will include all of
these items to complete the repair.
4. Remove the contents of the new brake coil and begin to
replace the brake coil assembly. The new brake coil is
spring loaded, so the clapper plate will need to be held
together to hold the springs in place. Line up the brake
coil assembly with the screw holes, and tighten the screws
to secure the brake coil to the motor assembly.
5. Connect the two white wires to the two black wires with an
insulated connector, and cover the two connections with
heat shrink to protect the connections. Reverse step 1
and reattach the long plastic cap and two screws to the
motor assembly. Temporarily connect the motor plug to
the controller and test the motor before putting it back on
the chair. Make sure that there are no E09 or E10 error
codes when testing motor. When testing is complete
reattach motor to the chair and test drive chair.
Power Mobility Guide
Rev. 1/09 TER
2-10
Service & Parts Education
4-POLE DC MOTOR BRAKE COIL REPLACEMENT
1. It is best if you remove the entire motor from the chair.
Refer to the Service Manual for motor removal
instructions.
Once the motor is removed from the chair, remove the
cap on the end of the motor to expose the brake coil.
2. Remove the screws that attach the coil to the motor
housing.
3. The motor lead has a protective sleeve and a strain
relief that needs to be removed in order to replace the
brake coil. Some motors have a plastic threaded nut,
and others have a plastic connector that prevent the
motor leads from being damaged. Use caution when
removing the strain relief and the protective sleeve, due
to the fact that they will have to be reused when
putting the brake assembly back together.
Power Mobility Guide
Rev. 1/09 TER
2-11
Service & Parts Education
4-POLE DC MOTOR BRAKE COIL REPLACEMENT
(continued)
4. Begin to disassemble the motor connector by removing
the roll pin at the top of the connector. Then remove the
two screws and clamp at the base of the connector.
5. Slide the Anderson housing back to expose the
individual motor and brake connectors. The red and
black connectors are for the motor, and the two black
connectors are for the brake. You will need to separate
the individual housings from the contacts (as shown in
the picture to the right). The new brake coil will have
new contacts already crimped to the wire leads.
6. Upon completing step 5, slide the Anderson housing
off of the motor lead, and remove the protective sleeve
to expose the wires coming out of the motor housing.
Caution
Do not cut this protective cover, slide it off of the
wires unless you have replacement protective
covering for the wires. If you are cutting off the
protective covering, be careful not to damage the
original motor wiring. If you do cut into the
insulation of the motor wiring, it must be
repaired before putting the protective covering
back onto the wiring.
Power Mobility Guide
Rev. 1/09 TER
2-12
Service & Parts Education
4-POLE DC MOTOR BRAKE COIL REPLACEMENT
(continued)
7. With the wiring loose and the brake coil
screws removed, begin to remove the brake
coil from the motor housing. Pull up on the
brake coil and pull the brake coil wires
through the opening on the motor housing.
Mark the brake coil defective and discard it.
Install the new brake coil and pull the brake coil
wiring through the motor housing opening.
NOTE: Before going onto step 8, make sure
that the brake coil pad is mated with the hex
drive nut on the end of the motor shaft.
Release the brake lever to realign the brake
coil pad if necessary.
Reattach the brake coil to the motor housing
using the fasteners you removed in step 2.
8. Reapply the protective covering or use new
material to protect the wiring from being
damaged. Then slide the Anderson
housing on before reassembling the
individual Anderson connectors to the
contacts. The two brake coil wires go
together side by side, and the red and black
motor connectors go beneath the brake coil
connectors. View the opposite motor
connector in case you have forgotten.
9. Before reattaching the motor to the power
chair, temporarily hook it up the controller.
Test your repair for the brake coil by raising the
drive wheels off of the ground.
Verify again that the drive wheels are off of the
ground, and power up the chair with both
motors engaged (If the joystick is equipped
with a speed potentiometer, turn it down to the
slow setting).
Give the joystick a forward and reverse
command to verify the motor and brake
operation, if an error code exist (E09 or
E10) call Technical Services.
Power Mobility Guide
Rev. 1/09 TER
2-13
Raise both of the drive
wheels off of the ground
. Place a block in front
of both caters before
testing motor and brake
assembly.
Service & Parts Education
GB MOTORS
(Gearless/Brushless DC Motor)
A DISCOVERY FROM THE PAST THAT WILL CHANGE THE FUTURE
It was once one of those moments of discovery that is easily taken for granted by later
generations. English physicist Michael Faraday had studied early experiments in
electromagnetism with great interest. In fact, he had already created the world’s first
electric motor, a crude model in which a wire rotated around a fixed magnet. But if an
electrical current could influence a magnetic field, Faraday reasoned, then perhaps the
opposite was true, as well. He set a magnet spinning within an uncharged,
horseshoe-shaped coil. And, true to his hypothesis, the magnet’s motion generated an
electric charge in the coil. What Faraday had discovered was the phenomenon of induced
electromagnetism. What he had created was the world’s first electric generator.
(GB Motors are Non-Serviceable)
GB Motors used on chairs prior to February 2003
Heavy Duty GB Motors used on chairs after to February 2003
TECH NOTE:
Power Mobility Guide
Rev. 1/09 TER
When replacing a GB motor or controller, you must
calibrate the motors with your Remote Programmer.
See page 2-15 for the Calibration Procedure.
2-14
Service & Parts Education
GB MOTOR CALIBRATION PROCEDURE
On chairs equipped with GB motors, motor calibration must be done when the
following conditions occur.
• When replacing a GB Motor.
• When replacing a GB Controller.
NOTE: An Invacare Remote Programmer is necessary for this procedure.
1. Raise both drive wheels off of the ground, and block the front casters to prevent the
chair form rolling forward. The chair must be secure to prevent any injuries.
2. Engage the motors, and plug in the Remote Programmer into the chairs controller.
3. Turn on the chair, then the Remote Programmer. Select the Calibration Menu and
arrow down to Calibrate Motor.
The programmer screen will prompt you with the following questions:
1. WHEELS WILL MOVE! DRIVE WHEELS RAISED? YES OR NO
2. CHAIR WILL DRIVE! ARE DRIVE WHEELS RAISED? YES OR NO
4. Press the Select button on the programmer to begin the Calibration procedure.
To CANCEL the Calibration press the MENU button.
5. When the calibration is complete, the screen will display the following:
COMPLETED TEST SAVING NEW VALUES
TECH NOTE:
Make sure the rear drive wheels are
clearly off of the ground (they will
begin to MOVE when calibration
begins).
Allow a minimum of
2” ground clearence.
Power Mobility Guide
Rev. 1/09 TER
2-15
Place an object in front of the two
casters, to prevent the chair from
rolling forward off of the stationary
stand.
MK6i Consumer (NX)
Electronics
Visit the Technical Zone at www.invacare.com
or Call us Toll FREE at 1-800-832-4707
Service & Parts Education
MK6i CONSUMER (NX) ELECTRONICS
Consumer or NX electronics are Invacare’s basic electronics that are intended for the
basic power mobility product. These systems cannot usually be expanded through the
electronics and have very limited programming ability. All lower end (consumer) power
wheelchairs use a form of these NX electronics.
Power Mobility Guide
Rev. 1/09 TER
3-1
Service & Parts Education
MK6i SINGLE PURPOSE JOYSTICK (SPJ+)
Charger/Programmer Port
On/Off button
Speed Control Button
Horn
Speed Indicator Light
Service Indicator
Inductive
Plug Port
MK6i SPJ+ joystick is Invacare’s standard joystick in our NX level of electronics. The SPJ+
has limited programming that is contained in the Control Module.
On/ Off Button = Used to turn On & Off the power.
Horn = Emits audible signal when pressed.
Speed Indicator Lights = Indicate maximum speed currently set.
Speed Control Button = Tortoise button is used to decrease the speed in 20%
increments while the Hare button is used to increase the speed in 20% increments.
To adjust in small increments hold both Tortoise and Hare until horn alarms, then
press and hold either Tortoise or Hare to decrease or increase the speed setting.
Inductive or Gimble = Is the proportional drive control that allows the driver to
control the product.
Charger/Programmer Port = Is the location where off-board chargers plug in to
charge the product. This port is also used to program the Control Module.
Service Indicator = This Amber light informs the driver and technician when an
error or fault occurs. This light flashes a number of times with pause in between
indicating the actual problem.
Plug Port = Is the location where the control module connects to joystick via joystick
cable.
Power Mobility Guide
Rev. 1/09 TER
3-2
Service & Parts Education
MK6i SPJ+ JOYSTICK CABLE
Joystick cable for the NX level of electronics can be removed, tested, and replaced if
needed. Test this cable as you would any other wiring.
JOYSTICK CABLE PINOUT
Positive
Communication Buss
Communication Buss
Negative
MK6i BATTERY TO CONTROLLER CABLE
The battery to controller cable is connected between the battery connection and the
controller.Test this cable as you would any other wiring. These connnections are marked as
Positive (+) and Negative (-) to assist in troubleshooting.
BATTERY TO CONTROLLER CABLE PINOUT
Negative
Positive
Power Mobility Guide
Rev. 1/09 TER
3-3
Service & Parts Education
MK6i CONTROL MODULES
MK6i Control Modules in NX level of electronics holds all programming aspects, including
any faults and error codes. Never open or modify control module. There are 3 types of
MK6i NX controllers:
MK660ACC = MK6i controller for 2 pole motors with or without powered seating.
MK690 = MK6i controller for 4 pole motors without powered seating.
MK690ACC = MK6i controller for 4 pole motors with powered seating.
MK6i CONTROL MODULES PINOUT
Power Mobility Guide
Rev. 1/09 TER
3-4
Service & Parts Education
MK6i PROGRAMMER
Up Arrow Key
Save Key
Select Key
Right Arrow Key
Pwr/Info Key
Left Arrow Key
Down Arrow Key
MK6i Programmer allows modification of the performance characteristics, gives
diagonostic information, and permits calibration changes in the control module. On NX
level of electronics this programmer will operate as a MK5 programmer and can not be
utilized in conjunction with a SD Memory Card.
Up & Down Arrow Keys = scrolls through menu options as well as raise and lower
selected values.
Left & Right Arrow Keys = scrolls along menu line items, as well as advance to
the next or return to the previous screen of highlighted value.
Select Key = allows selection into highlighted and modified value. Other functions
when prompted.
Save Key = allows programmed value and drives to be saved into system. Must be
pressed twice to properly save changes.
Pwr/Info Key = Powers programmer On/Off.
To operate turn ON power wheelchair, plug MK6i Programmer into joystick charger/programming port, press power key on programmer and wait for communication. If communication error is present disconnect programmer, verify power is ON and/or test joystick
charger/programmer port for proper voltage 25.0 dcv or higher, then retry.
The first display screen shown after powering on the programmer is the main menu and
consists of the following options: Perfomance Adjust, Programs and Others.
Power Mobility Guide
Rev. 1/09 TER
3-5
Service & Parts Education
MK6i NX PERFORMANCE ADJUST MENU
The first option in the main menu is Performance Adjust menu. The Perform Adjustment
menu is used to modify driving parameters of the power wheelchair. These parameters are
modified to enhance the performance of the power wheelchair for the end user.
Forward Speed = Sets maximum forward speed.
Turning Speed = Sets maximum turning speed.
Acceleration - Fwd = Sets how quickly the controller allows the chair to accelerate
when the joystick is moved in a forward direction from neutral.
Acceleration - Rev = Sets how quickly the controller allows the chair to accelerate
when the joystick is moved in a reverse direction from neutral.
Turn Acceleration = Sets how quickly the controller allows the chair to accelerate
when the joystick is moved in a left or right direction from neutral.
Turn Deceleration = Sets how quickly the controller allows the chair to decelerate
when the joystick is moved from a left or right direction to neutral.
Braking Forward = Sets how quickly the controller allows the chair to decelerate
when the joystick is moved from a forward direction to neutral.
Braking Reverse = Sets how quickly the controller allows the chair to decelerate
when the joystick is moved from a reverse direction to neutral.
Reverse Speed = Sets maximum reverse speed.
Tremor Dampening = Is used to adjust the sensitivity of the joystick out of the
neutral position. Often used to assist end users with Ataxia / Tremors.
Higher value = delays response from joystick commands.
Lower value = increases respones from joystick commands.
Torque = Sets how quickly the chair has the power available to it. Simular to
acceleration, torque ramps up to the full power level allowed by the controller. Used
to climb over obsticals or ramps. In MK6i adjust torque in 4 ohms increments only.
High torque value could cause the chair to overheat.
Low torque could cause the chair to stall at obsticals.
Power Mobility Guide
Rev. 1/09 TER
3-6
Service & Parts Education
MK6i NX PROGRAMS MENU
The second option in the main menu is Programs or Standard Programs. The Programs
menu is used as a reference point for initial set-up of a power wheelchair, for final settings
or whenever major changes have been made in the Performance Adjust and a starting
point has to be reestablished. This setting also sets the motor configuration on the NX level
of electronics.
Always set this initially before changing any perfomance changes. Once any Performance
Adjustment has been made, in MK6i, the Programs values must be reset manually. To set
the Programs you will set the motor configuration/type of chair and motor type (pole).
MK660w/ACC (2 pole)
MWD - M61 or M51 - M61
EURO - M61 European model only
MWD - M71 - 2P or SPREE/SC/M71
RWD - 2P
MK690 & MK690w/ACC (4 pole)
TDX 4P
RWD 4P
CWD M91/SP/SI
CWD M91 HD
MK6i NX PROGRAMS VALUES
Controller Type
Motor configuration
MK660w/ACC
MWD
RWD
Forward Speed:
Turning Speed:
Acceleration Fwd:
Acceleration Rev:
Turn Acceleration:
Turn Deceleration:
Braking Forward:
Braking Reverse:
Reverse Speed:
Tremor Dampening:
Torque (ohms):
100
30
25
25
25
30
50
55
40
40
144
Power Mobility Guide
Rev. 1/09 TER
MK690 & MK690 w/ACC
CWD
RWD
95
25
30
30
30
35
50
55
40
40
144
95
20
20
20
25
35
50
55
50
35
36
3-7
90
20
25
20
20
25
50
45
30
40
48
Service & Parts Education
MK6i NX OTHERS MENU
The last option in the main menu is Others. The Others menu provides calibration changes
and the diagnostic menu.
Motor Balance: is a calibration used to correct veer when going straight. When
performing motor balance you change the value to slower side. If major
changes to Motor Balance is needed check motors for possible issues.
To properly adjust the Motor Balance
-Allow for alot of room.
-Straighten all casters and sit in chair.
-Put thumb and index finger together to make a V. Place them against the
rear of the inductive.
-Close eyes and push inductive forward and hold for 5 seconds.
-Release the inductive and allow chair to stop.
-Verify ending position relative to starting position.
-Adjust balance to compensate for pull in left or right direction.
Joystick Throw: is a calibration used to calibrate the neutral and the full speed
travel of the proportional joystick. The control module stores the maximum displace
ment of the joystick and later, during driving, uses the values to generate a full speed
command whenever that displacement is reached. Exceeding this displacement
does not provide further increase in speed. The result of this method of calibration
is a customized driving template. The Joystick Throw in MK6i NX level of electronics
is seperated into three level:
Normal = full displacement of the inductive to access full programmed
speed.
Short = half displacement of the inductive to access full programmed speed.
Very Short = quarter displacement of the inductive to access full
programmed speed.
Fault Log: shows the error codes that have been detected by the diagnostic
system since the control module was built in the factory. The Fault Log can be used
by the service technician to uncover the cause of intermittent faults that may not be
evident when the wheelchair is being serviced.
Usage Statistics: displays how long the wheelchair has been on in hours/minutes,
the total number of times the wheelchair has been powered up and how many times
the wheelchair has been driven.
Power Mobility Guide
Rev. 1/09 TER
3-8
Service & Parts Education
MK6i NX ERROR CODES DESCRIPTION
# of Times
Flashes
Fault Log
Error Code
Fault Log
Sub Code
Error Code
Description
Details of Error Code
1
2
E01
E02
00
00
User Fault
Battery Fault
Stall Time-out
Recharge Batteries or Replace
3
E03
00
01
02
03
04
05
06
07
08
Left Motor Fault
Left Motor Short Circuit
Left Motor Open Circuit
Left Motor Connection Fault BMotor Terminal Connected to B+
Left Motor Voltage Fault
Left Motor Bridge Fault
Too Many Hardware Current Limit Events
Current Offset Out of Range
Hardware Current Limit Fault
4
E04
00
01
02
03
04
05
06
07
08
Right Motor Fault
Right Motor Short Circuit
Right Motor Open Circuit
Right Motor Connection Fault BMotor Terminal Connected to B+
Right Motor Voltage Fault
Right Motor Bridge Fault
Too Many Hardware Current Limit Events
Current Offset Out of Range
Hardware Current Limit Fault
5
E05
00
01
Left Park Brake Fault
Left Park Brake Drive-Time Test Failed
Left Park Brake Output Enabled When Chair
Idle
Left Park Brake Output Did Not Enable When
Entering Drive Mode
Left Park Brake Fault During Power-Up Testing
Left Park Brake Feedback Low During Drive
(Park Brake Short?)
Right Park Brake Fault
Right Park Brake Drive-Time Test Failed
Right Park Brake Output Enabled When Chair
Idle
Right Park Brake Output Did Not Enable When
Entering Drive Mode
Right Park Brake Fault During Power-Up
Testing
Right Park Brake Feedback Low During Drive
(Park Brake Short?)
Local SR Fault (CPU. EEPROM, ect.)
Joystick Fault at the Remote
Speed Pot Fault at the Remote
02
03
04
6
E06
00
01
02
03
04
7
E07
00
01
02
Remote Fault
8
E08
00
01
02
03
04
05
06
07
08
09
10
11
12
Controller Fault
00
01
00
00
Communication Fault
9
E09
10
11
E10
E11
Power Mobility Guide
Rev. 1/09 TER
RAM Fault
ROM Fault
CPU Fault
EEPROM Fault
Watchdog Fault
Stack Fault
Software Fault
Power-up Testing Fault
Relay Fault or Precharge Fault
Bridge Fault or Disable All Fault
Electronics Fault: Thermistor
Calibration Setting Fault
General Fault
Incorrect Remote
3-9
Remote Connection Lost
Low Communication Mode
General Fault
Incompatible Remote
MK6i Troubleshooting
& Diagnostics
Visit the Technical Zone at www.invacare.com
or Call us Toll FREE at 1-800-832-4707
Service & Parts Education
MK6i TROUBLESHOOTING & DIAGNOSTICS
This section contains troubleshooting for both NX and EX levels of electronics. Each
section of this book goes over troubleshooting of the 5 main components of Invacare’s
power wheelchair. This section primarily contains the Error Code Listing.
Power Mobility Guide
Rev. 1/09 TER
4-1
Service & Parts Education
BATTERY TROUBLESHOOTING GUIDE
Problem
Batteries won’t charge
Possible Cause
Blown fuse in wiring
harness, or charger
Check all fuses on the chair,
and in the charger
Charger not plugged into
outlet
Make sure charger is
plugged into the outlet
No AC power at the outlet
Check for AC power with a
digital multi meter
Charger power cord may be
damaged, or the connector
may be damaged
Check for damage and
replace if necessary, or
send in for repair
Charger may have internal
damage
Charge batteries with
known good charger
Battery voltage too low for
charger to start charging
cycle
Replace batteries
Batteries have short driving Consumer not charging
range during a single charge batteries long enough
or battery gauge falls off
Batteries may be weak
faster than normal
Batteries have swelled up
Power Mobility Guide
Rev. 1/09 TER
Corrective Action
Charge for 8-10 hours
minimum
Perform load test, or check
Battery Quality Menu with
your programmer
Check programming
settings
Torque setting and Power
Level setting may be to high
Heavy load on motors
Chairs weight distribution
may be offset (chair may be
front loaded)
Batteries have been
overcharged
4-2
Check or replace
batteries
Service & Parts Education
CHARGER TROUBLESHOOTING GUIDE
Problem
Possible Cause
Corrective Action
Batteries won’t charge
Blown fuse or damaged
wiring
Replace fuse and check
wiring for damage
No LED’s on Charger
Charger not plugged into
outlet, or disconnected from
wiring harness on chair
Make sure the charger is
plugged into the outlet,
and check the wiring on the
chair
No AC power at the outlet
Check for AC power with a
digital multi meter
Power cord may be
damaged
Check for damage on the
power cord, replace if
damaged or send in for
repair
Charger LED’s may be burnt
out
Send charger to Invacare
for repair
Charger may have internal
fuse that is blown
Remove charger cover and
check for fuses
Charger starts up and shuts
off after running for a short
period of time, red or green
lights may be
flashing
Powerchairs batteries may
be severely discharged
(voltage too low for charger
to start)
Remove each battery and
use a 12 volt charger on
each battery for 1 hour then
put both batteries back into
battery box(es), and restart
OEM charger, or replace
batteries if needed
Short charge time
One or both batteries may
be bad, (if batteries charge
up to soon)
Load test each battery, and
replace if needed
Power Mobility Guide
Rev. 1/09 TER
4-3
Service & Parts Education
WIRING TROUBLESHOOTING GUIDE
Problem
Possible Cause
Corrective Action
Bad connection or blown
fuse
Check Joystick connection
Check all connections and
housings for damage
Replace fuse if blown
Loose battery connections
Check battery cable
connections, may have
vibrated loose when driving
on rough terrain
Damaged controller
connections
Repair connection, or clean
contacts
Drive lockout condition in
high back van seat,
recliners, and any Power
Seating System
Return to upright seat and
back angle, recalibrate
mercury switch or
reconnect wiring (may have
come loose)
Check POT calibration or
mercury switch on chairs
equipped with power
seating
Internal Wiring Harness
damage, perform a
continuity test on each
connection
Replace wiring harness
Charger still plugged when
user tries to drive the chair
Unplug charger to drive
chair
No LED’s on Joystick or
Tiller
Tiller harness unplugged
joystick connection to
controller unplugged or
damaged
Plug connections back
together, and check for
damage wiring
Corroded wiring or
connections
Possible water, salt, or urine
damage
Replace harness
No power to chair motors
E28 Error code
Power Mobility Guide
Rev. 1/09 TER
4-4
Service & Parts Education
MOTOR/GEARBOX/BRAKES TROUBLESHOOTING GUIDE
Problem
Motor makes a clicking noise
Possible Cause
Corrective Action
Bad coupler between motor and Replace coupler, if bearings
gearbox, or bad bearings inside are bad replace motor
of motor
Raised commutator plate inside Ohm out motor, and Replace
of motor
motor if high reading is
present .5 - 5 Ohms Normal
Grinding noise or motor is
locking up
Bad gearbox
Replace gearbox
Motors stall and starts up
again
Current Rollback
Leave power ON and allow
controller to count down, and
recharge the chair overnight
with power ON
Engage motors to drive chair
Chair will not drive with power Check motor locks
on (E09 or E10)
Motor chatters or runs
erratically, or only one motor
turns
Chair veers to the left or right
when driving on level surface
Damaged connector or worn
brushes
Ohm out motors, check or
replace brushes
Controller malfunction
Swap out motor leads
Check for error codes with
programmer
Uneven tire pressure
Motors out of balance
Inflate tires, or replace if worn
Use programmer to balance
motors (2/4-Pole Only)
Joystick needs calibrated
Recalibrate joystick with
programmer, or replace
inductive if necessary
Recalibrate motors with
programmer
GB motor calibration needed
E09/E10 error code will not go Bad motor connection
Bad brake Coil
away
Brake dragging causing chair
to veer
Power Mobility Guide
Rev. 1/09 TER
Bad brake coil, or connection
On early 2-Pole motors if the
Brake Lever is bent, it may be
rubbing on the brake pad
4-5
Check all connections, Ohm
out each brake coil 45 - 80
Ohms Good, Swap motor
leads to see if code switches
sides (call Tech Services)
Replace brake coil
Service & Parts Education
MOTOR/GEARBOX/BRAKES TROUBLESHOOTING GUIDE
Problem
Possible Cause
Corrective Action
Gearbox is leaking fluid
Bad seal around drive
shaft, or loose hardware
If seal is bad replace
gearbox, If loose
hardware is found
retighten hardware
Excessive clicking
coming from
motor/gearbox
Bad bearing in motor or
gearbox
Replace motor or
gearbox
Loose wheel hardware
Tighten loose hardware
Replace gearbox
Gearbox shaft movement,
or bent shaft
Rough driving
Replace motor
GB motors clicking
Excessive load on chair,
or damage from rough
terrain
Bad internal bearings,
replace motor.
Loose hub on motor
Tighten loose hardware
Bent lever or internal
damaged
Replace brake coil
Bad micro switch or out of
adjustment
Repair micro switch,
readjust switch, or
replace brake coil
(or complete motor)
Poor connection, or worn
brushes
Check motor
connector and brushes,
replace if necessary
GB motor calibration
Recalibrate motors
Brake lever not engaging
brake coil
Motor stutters
Power Mobility Guide
Rev. 1/09 TER
4-6
Service & Parts Education
MOTOR/GEARBOX/BRAKES TROUBLESHOOTING GUIDE
Problem
Motor fails to start after
initial installation
Motor is running then
fails to restart when
stopped
Possible Cause
Motor is miswired
Verify wiring to motor from
controller
Battery voltage is too low
Check batteries and recharge if necessary
Switch motor leads
Replace motor or
controller
Heavy load on the motors
and, chair is in the Current
Rollback mode
Leave power ON and allow
controller to count down,
and recharge the chair
overnight with power ON
Reset breaker and check
wiring
Replace fuse
Circuit breaker may have
tripped
Blown fuse in Wiring
Harness
OHM out motor to check for
possible internal damaged
Worn out brushes may be
possible
Controller power stage
board, or relays may be
damaged
Motor runs but loses
power
Scooter or Chair loses
all power while driving
Power Mobility Guide
Rev. 1/09 TER
Corrective Action
Controller senses heavy load,
and has entered the Current
Rollback mode
“Soft Stop” is engaged, If key/
power is turned “OFF” while
driving, the chair artificially
holds power for 1.5 seconds
slowly decelerating until to a
stop
4-7
Replace brushes if
necessary, or replace
motor if internal damage is
determined
Replace controller or send
to Invacare for repair
Leave the power ON and
allow the controller to count
down, recharge overnight
with power ON
With key/power “OFF”
position, wait 10 seconds
and turn power back “ON”
Service & Parts Education
MK6i FORMULA TRE & CG TROUBLESHOOTING GUIDE
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Wheelchair Power ON
but does not drive
System tilted beyond drive
lock-out angle (20 degrees)
Return to seat/back to upright position
Limit switch faulty or out of adjustment
Seating System not
functioning or working
intermittently
Low battery voltage
Blown 15 amp fuse
Faulty Connections
Charge batteries and verify load test
Replace Fuse on Power adapter
Check all connections
Communication Error
Save proper 4W STD PRGM in the
Calibrations Menu
Actuator “HOT” due to
heavy load for an extended
period of time
Check turn power OFF to allow
electronics to cool down
(2 minutes or more)
Check the Power Seating menu
to verify speeds
Communication Error in TRAM,
4WSB, SANODE and S4WSB
Check Powered Seating menu to verify
proper programing and Diagnostics
menu for version
Bad Actuators
Check for 24 VDC when switch is
activated with a multimeter at the
actuator connector.
Switch actuator leads from a
functioning actuator to the one that is
not working, activate switch to
verify if the actuator is bad or the
power seating control module is bad
Bad or Loose Mercury switches
Check all Mecury switch on the chair
make adjustments or replace
Bad mode switch on the MPJ+
Replace joystick or send in for repair
System tilted beyond drive
lock-out angle (20 degrees)
Return to seat/back to upright position
Possible bad wiring harness check
pins 2 and 3 on charger connector for
5 VDC reference when seat is below
20 degrees, and 0 VDC when seat is
tilted beyond 20 degrees
Damaged wiring on joystick
or 24 VDC power adapter
Check cables for wiring damage
(inhibit line or charger plug faulty)
Communication Error
Check the control module for
programming errors and verify the
Version through the Diagnostics Menu.
E28 Error code
System not operating
through the driver control
Power Mobility Guide
Rev. 1/09 TER
4-8
Service & Parts Education
MK6i PTO PLUS AND SUPER LOW TROUBLESHOOTING GUIDE
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Wheelchair Power ON
but does not drive
System tilted beyond drive
lock-out angle (20 degrees)
Return to seat/back to upright position
Limit switch faulty or out of adjustment
Seating System not
functioning or working
intermittently
Low battery voltage
Charge batteries and verify load test
Bad Mode switch on MPJ+
Replace Joystick or send in for repair
Communication Error in TRAM
or SANODE
Check Powered Seating menu to verify
proper programing and Diagnostics
menu for version
Bad 4-way switch or QPB
Check all connections and test
using new switch
Actuator “HOT” due to
heavy load for an extended
period of time
Check Diagnostics menu to verify
or turn power OFF to allow electronics
to cool down (2 minutes or more)
Check the Powered Seating Menu
menu to verify speeds and adjust if
necessary
Bad Drive Limit switch or Tilt
Limit switch
Check connections on Drive Limit
and Tilt Limit switch or replace
Bad Actuators
Check for 24 VDC when switch is
activated with a multimeter at the
actuator connector coming out of the
power seating control module. Use
new mode switch on Smart Actuators.
Switch actuator leads from a
functioning actuator to the one that is
not working, activate switch to
verify if the actuator is bad or the
power seating control module is bad
System tilted beyond drive
lock-out angle (20 degrees)
Return to seat/back to upright position
Possible bad wiring harness check
pins 2 and 3 on charger connector for
5 VDC reference when seat is below
20 degrees, and 0 VDC when seat is
tilted beyond 20 degrees
Damaged wiring harness
Replace wiring harness (inhibit line
or charger plug faulty)
Communication Error
Check the control module for
programming errors and verify that the
Tilt/Recline menu option is not OFF.
E28 Error code
System not operating
through the driver control
Power Mobility Guide
Rev. 1/09 TER
4-9
Service & Parts Education
MK6i NX TROUBLESHOOTING
Charger/Programmer Port
BDI Lights
Service Indicator
The SPJ+ has limited programming that is contained in the Control Module. There is No
reprogramming necessary if replaced.
Charger/Programmer Port = Is the location where programmer plugs into for
programing the Control Module which contains the fault log.
Service Indicator = This Amber light informs the driver and technician when an
error or fault occurs. This light flashes a number of times with pause in between
indicating the actual problem. See error codes list.
Battery Display Indicator Lights = will flash if in drive lockout informing the end
user that the power wheelchair will not drive. These indicator lights will also flash if
charger is running.
MK6i Control Modules in NX level of electronics holds all programming aspects, including
any faults and error codes. In the EX level of electronics all programming aspects are
stored in the driver control. Never open or modify control module.
Power Mobility Guide
Rev. 1/09 TER
4-10
Service & Parts Education
MK6i NX TROUBLESHOOTING
Up Arrow Key
Select Key
Pwr/Info Key
Down Arrow Key
MK6i Programmer gives diagonostic information in the control module. On NX level of
electronics this programmer will operate as a MK5 programmer and can not be utilized in
conjunction with a SD Memory Card.
Pwr = Powers programmer On/Off
Up & Down Arrow Keys = scrolls through the Others Menu options to access
the Fault Log.
Select Key = allows selection into highlighted and modified value. Other functions
when prompted. Tthe first 3 faults are the most recent Error Codes.
To operate turn ON power wheelchair, plug MK6i Programmer into joystick charger/programming port, press power key on programmer and wait for communication. If communication error is present disconnect programmer, verify power is ON and/or test joystick
charger/programmer port for proper voltage 25.0 dcv or higher, then retry.
The Others menu provides calibration changes and the diagnostic menu that can be
utilized to assist in troubleshooting and repair of consumer power wheelchair.
Motor Balance: is a calibration used to correct veer when going straight. When
performing motor balance you change the value to slower side. If major
changes to Motor Balance is needed check motors for possible issues.
Joystick Throw: is a calibration used to calibrate the neutral and the full speed
travel of the proportional joystick. This can be used to recalibrate joystick if relative
error code is present.
Fault Log: shows the error codes that have been detected by the diagnostic
system since the control module was built in the factory. The Fault Log can be used
by the service technician to uncover the cause of intermittent faults that may not be
evident when the wheelchair is being serviced.
Usage Statistics: displays how long the wheelchair has been on in hours/minutes,
the total number of times the wheelchair has been powered up and how many times
the wheelchair has been driven.
Power Mobility Guide
Rev. 1/09 TER
4-11
Service & Parts Education
MK6i NX ERROR CODES DESCRIPTION
# of Times
Flashes
Fault Log
Error Code
Fault Log
Sub Code
Error Code
Description
Details of Error Code
1
2
E01
E02
00
00
User Fault
Battery Fault
Stall Time-out
Recharge Batteries or Replace
3
E03
00
01
02
03
04
05
06
07
08
Left Motor Fault
Left Motor Short Circuit
Left Motor Open Circuit
Left Motor Connection Fault BMotor Terminal Connected to B+
Left Motor Voltage Fault
Left Motor Bridge Fault
Too Many Hardware Current Limit Events
Current Offset Out of Range
Hardware Current Limit Fault
4
E04
00
01
02
03
04
05
06
07
08
Right Motor Fault
Right Motor Short Circuit
Right Motor Open Circuit
Right Motor Connection Fault BMotor Terminal Connected to B+
Right Motor Voltage Fault
Right Motor Bridge Fault
Too Many Hardware Current Limit Events
Current Offset Out of Range
Hardware Current Limit Fault
5
E05
00
01
Left Park Brake Fault
Left Park Brake Drive-Time Test Failed
Left Park Brake Output Enabled When Chair
Idle
Left Park Brake Output Did Not Enable When
Entering Drive Mode
Left Park Brake Fault During Power-Up Testing
Left Park Brake Feedback Low During Drive
(Park Brake Short?)
Right Park Brake Fault
Right Park Brake Drive-Time Test Failed
Right Park Brake Output Enabled When Chair
Idle
Right Park Brake Output Did Not Enable When
Entering Drive Mode
Right Park Brake Fault During Power-Up
Testing
Right Park Brake Feedback Low During Drive
(Park Brake Short?)
Local SR Fault (CPU. EEPROM, ect.)
Joystick Fault at the Remote
Speed Pot Fault at the Remote
02
03
04
6
E06
00
01
02
03
04
7
E07
00
01
02
Remote Fault
8
E08
00
01
02
03
04
05
06
07
08
09
10
11
12
Controller Fault
00
01
00
00
Communication Fault
9
E09
10
11
E10
E11
Power Mobility Guide
Rev. 1/09 TER
RAM Fault
ROM Fault
CPU Fault
EEPROM Fault
Watchdog Fault
Stack Fault
Software Fault
Power-up Testing Fault
Relay Fault or Precharge Fault
Bridge Fault or Disable All Fault
Electronics Fault: Thermistor
Calibration Setting Fault
General Fault
Incorrect Remote
4-12
Remote Connection Lost
Low Communication Mode
General Fault
Incompatible Remote
Service & Parts Education
UNDERSTANDING CURRENT ROLLBACK
Current Rollback is a protective condition the controller goes into when heat builds up if the
motors ever draw excessive amounts of current through the controller for extended periods of
time. This condition is protecting the power stage board in the controller. This part is
approximately a $500.00 value and would be costly to replace.
The programming values for Torque and Power Level as well as the Center of Gravity setup of
the chair, do affect the current draw through the controller.
• The higher the Torque, the faster the controller sends high current to the motors.
• The higher the Power Level, the more current the controller will allow the motors to draw
under load.
• The higher the Speed, the more voltage the controller sends to the motors.
• The more Front Loaded the chair is, the more power the motors need to move the chair
through the resistance of the weight over the casters.
High Torque + High Power Level + High Speed + Extended Driving Time + Stress to the Motors
Potential for Current Rollback
Continuous driving with these high levels would be similar to a fighter jet continuously flying with
the After Burners ON. The controller may build up heat (Current Rollback) and the battery
charge would be more quickly depleted.
There is no specific fault code for Current Rollback. Users may complain of an intermittent
cutout of their chairs operation or a sensation of loss of power.
If Current Rollback does occur, the chair will still drive for a period of time before cutting out
completely. In a Current Rollback condition, the controller cuts back on Current/Voltage to the
motors in an attempt to prevent a complete shut down -or- the wheelchair will shut down as the
controller protects the power stage board.
• As the current counter inside the controller approaches a preset cut off value, it cuts the
power output to try and prevent complete shut down.
• If the user continues to push the chair and the current counter reaches the preset cut off
value, the chair will shut down completely.
• If in Current Rollback the joystick battery indicator lights will show the left two bars flashing
and the right battery level indicator light will still be on.
• If in Current Rollback the LCD Display may also record the word “HOT” or scroll an E176 E179 fault code. Check the Fault Log in the Diagnostics Menu for the any two consecutive
faults between E176 - E179.
The best remedy for Current Rollback is to leave the chairs power switch ON - without driving
the chair - for approximately 40 minutes. This allows the current counter to reset to zero. This
is easily achieved by charging the batteries with the chairs power left in the ON position.
The best way to prevent this problem is to make certain Torque and Power Level are
appropriately for the desired drives / environments, and set the Center of Gravity of the chair
appropriately for the user. This ensures that one of these things alone is not the causing factor.
Power Mobility Guide
Rev. 1/09 TER
4-13
Service & Parts Education
UNDERSTANDING TORQUE AND POWER LEVEL
Torque - is one of the most commonly misunderstood performance adjustments on Invacare
power chairs. Most people think Torque is the amount of power a chair has (not true). Torque is
how fast the chair has the power available to it, or how quickly the chair can ramp up to the
available power (Power Level).
A common demonstration of the Torque setting was to set the value high and have someone stand behind
the chair and try and hold the chair back (while someone sitting in the chair tried to drive forward). The
result being that no matter how hard the person tried, the chair would pull from their grip. Then turn the
Torque setting down and try the same thing. The result would have been the same if the second attempt is
done for 10 seconds or so. The problem was that most people would be able to hold that chair back for 3
or 4 seconds. If they would have counted to 10 they would have noticed the power ramping up, and the chair
would have push them across the room as if the Torque setting was set high in the first demonstration.
The higher the setting the more responsive the chair becomes to the joystick commands. If the
Torque value is set too high, the chair can have a jerky or jumpy feel.
If the user complains their power chair is too “jerky”, too “responsive”, too “jumpy”, etc. Try
reducing the Torque value in the Performance Adjustment Menu with your MK6i Programmer. It
is common that someone may have previously increased the Torque value in an attempt to give
the chair more power (a common misunderstanding). If the chair is still too responsive, the turn
down the Speed and Sensitivity (or Turn Acceleration and Deceleration).
A good general rule to follow:
Low Speeds often require High Torque Values - Immediate access to power to overcome
obstacles and rough terrain.
High Speeds often require Low Torque Values - Momentum prevails over obstacles. Soft response to
driver commands at high speeds feels smooth and controlled to many drivers.
Power Level - as a Performance Adjustment, is a true power output (Current or Amps) setting
for the controller. Power Level does NOT impact speed on level surfaces. On an incline
however, under a load, a chair may lose speed if there is insufficient power to maintain the speed
under that load.
Setting the Power Level to a lower value limits the available (Current) to the motors. If the Power
Level is set low, the chair will stall when it encounters situations that require more power that the
set value. A good application like this is for a new driver, if they tend to accidentally run into walls
or furniture (low settings would cause the chair to stall rather than causing further damage).
The Power Level can be set different on each available drive. Therefore, you can have one drive
with less power to prevent damage to the user or the environment, and another drive with more
power for different environmental situations (outdoor driving, ramps, and soft terrain).
NOTE: Power = Current * Voltage or IT2 (I = Current and T = Time)
The setting of Power Level affects the current in this setting when played with the value of time. Where I
equals current and T equals time! This formula is squared - so with a higher value applied at Power Level
the control has more output at a faster time!
Power Mobility Guide
Rev. 1/09 TER
4-14
Scooter Troubleshooting
LYNX L-3 & L-4
Visit the Technical Zone at www.invacare.com
or Call us Toll FREE at 1-800-832-4707
Service & Parts Education
SCOOTER TROUBLESHOOOTING PROCEDURE
1. Check the static battery voltage with a digital multimeter (25.0 VDC or higher OK).
Battery Voltage ______VDC.
2. Test the battery charger to ensure that it is functioning properly. Plug in the charger and
check the on charge voltage at the batteries with a digital multimeter (27.0 VDC or
higher OK).
3. Check all fuses and connections for damage, loose or broken connection, and
corrosion.
• Front Console Fuse (3 Amp)
OK
• Controller Fuse (5 Amp)
OK
• Battery & Motor Connections
OK
• Tiller Connections
OK
• Circuit Breaker Connections
OK
• Charger Connections
OK
4. Test Motor and Brake Connections, and measure motor/brake resistance.
• Test Motor Connection (M+ and M-).
.5 to 5 Ohms Good (higher Ohm readings indicate internal problems).
_________ Ohms
Motor Brushes
OK
•
Test Brake Coil (on B1 and B2).
40-50 Ohm Ranges Good (O.L. indicates a shorted Brake Coil).
________ Ohms
•
Check Micro Switch on Brake.
OK
5. Check the control module for any error codes. (see error code list on 5-2 & 5-3)
_______, _______, _______, _______,
Consult the Service Manual for each procedure listed above, or visit our
website at www.invacare.com for more technical information.
or
Contact Invacare Technical Support toll free at 1-800-832-4707 for more information.
Please have the following information prior to calling:
• Model and Serial Number.
• Version of Electronics and Error Codes.
• It is recommended that you stay with the product while contacting Invacare.
• Make sure you have already ruled out the batteries before contacting Invacare.
Power Mobility Guide
Rev. 2/08 page # 2
5-1
Service & Parts Education
REAR BASE ASSEMBLY AND BATTERY/CHARGER BOX
INSPECTION
1.
Remove the seat, the battery/charger box, and rear base assembly. Then remove the
top covering of battery/charger box and the shroud of the rear base assembly to begin
the wiring inspection process.
2.
Inspect battery/charger box and rear base assembly for loose or broken connections,
and corrosion. Replace if needed.
3.
Take a static voltage reading from the batteries to verify state of charge. This can be
performed easily by testing at battery box connection.
- 25.0 VDC or higher for the pair is GOOD. (fully charged)
4.
Plug in the charger to verify that it is in good working condition.
- Static voltage with the charger ON should be above 27.0 VDC.
5.
Perform a load test on the batteries if unsure of battery condition.
- Field load test or Hand Held load test .
6.
Check circuit breaker connections located in battery/charger box and reset if
necessary. If circuit breaker continues to trip, an electrical problem is present contact
Invacare Technical Support.
- Ohm reading should be less than 1 Ohm.
- Replace if circuit breaker has tripped multiple times.
Circuit Breaker
110AC Charger Connection Charger LED
3 Amp Charger
12 volt Battery
12 Volt Battery
Battery Voltage Test
Battery / Charger Box
Brake Lever
Motor
Transaxle
Front to Rear
Connection
Power Mobility Guide
Rev. 2/08 page # 3
Rear Base Assembly
5-2
Service & Parts Education
SCOOTER MOTOR AND BRAKE TESTING
Motor and Brake Ohm Testing Procedures
1. Before testing begins you will need to remove the seat and battery/charger box. Then
remove rear motor section . Tip the rear section on the anti tipper wheels to locate
4-clip connection. Inspect these connections for damage or loose connections, and
corrosion.
2.
To test the motor circuit for proper resistance, insert meter leads into M+ and M-.
- Normal motor Ohm range is .5 - 5 Ohms
- High Ohms reading may be cause by bad motor brushes
3.
To test parking brake circuit for proper resistance, insert meter leads into B+ and B-.
- Normal brake coil Ohm range is 40 - 50 Ohms
- Test and inspect the brake coil micro switch for damage
Motor Brake
Coil
Brake Coil
Micro Switch
Power Mobility Guide
Rev. 2/08 page # 4
5-3
Service & Parts Education
SCOOTER FRONT CONSOLE INSPECTION
1.
Remove the 2 screws at the base of the front console faceplate.
2.
Look for loose connections or damaged wiring.
3.
Inspect the 3 amp fuse on the P.C.B. for a blown filament.
4.
Inspect the P.C.B. for damage or loose connections.
5.
Make sure key switch and P.C.B. attaching hardware is tight.
SCOOTER CONTROLLER INSPECTION
1.
Remove the 6 push pins that secures the foot board mat to the base. Then remove
the 2 screws that secures the controller cover plate.
2.
Inspect wiring and controller for loose or broken connections, damage and
corrosion. Replace if needed.
3.
Inspect the 5 amp fuse in-line to the controller for a blown filament.
4.
Use programmer to check for error codes.
Power Mobility Guide
Rev. 2/08 page # 5
5-4
Service & Parts Education
SCOOTER THROTTLE POT CALIBRATION PROCEDURE
(Manual Adjustment without DS100 Programmer)
This procedure should only be done if one of the
following occurs:
•Scooter will not drive, and 6 flashes are noticed
on the Status Indicator LED.
•After Replacing a Throttle Assembly, and the
Scooter will not drive (6 flashes are noticed on
the Status Indicator LED).
1. Turn key off and disengage the brake lever at the
back of the scooter. Place an object under the
frame to raise the drive wheels off of the ground
for testing purposes. Locate the 2 phillips
head screws underneath the tiller display and
remove them. Locate and remove the 2 phillips
head screws on the throttle handle (the throttle
handle base should remain)
1. Remove the top of the tiller.
2. Using a “2mm” hex head tool, loosen the 2 set
screws slightly (do not remove the screws).
3. Turn the key to the on position and locate the
throttle potentiometers red and white wires. Use
a multimeter to take a DC voltage reading
from the red and white wires. You should see a
reading of 2.5 VDC (+/- .2). A normal reading is
around 2.3 VDC, but if you are experiencing 6
flashes on the Status Indicator LED, the throttle
pot needs to be re-calibrated.
4. To re-calibrate the throttle pot, leave your digital
multimeter hooked up to the red and white wires,
and use a small flat common screwdriver to
adjust the throttle pot. Turn the pot clockwise or
counter clockwise until your multimeter reading is
around 2.5 volts (+/- .2). When you have
recalibrated the pot, tighten the two set screws.
Engage the brake lever and turn the key off then
back on. Look at the Status Indicator LED, you
should notice a solid green LED, if you do, you
should be able to drive the scooter. Test drive the
scooter while the wheels are still raised.
Power Mobility Guide
Rev. 2/08 page # 6
5-5
2. Loosen the two “2mm” hex
head screws slightly.
3 & 4. Using a digital multimeter,
re-calibrate the throttle
potentiometer.
Service & Parts Education
SCOOTER THROTTLE POT CALIBRATION PROCEDURE
(Adjustment with DS100 Programmer)
This procedure should only be done if one of the
following occurs:
•Scooter will not drive, and 6 flashes are noticed
on the Status Indicator LED.
•After Replacing a Throttle Assembly, and the
Scooter will not drive (6 flashes are noticed on
the Status Indicator LED).
1. Turn key off and disengage the brake lever at the
back of the scooter. Place an object under the
frame to raise the drive wheels off of the ground
for testing purposes. Locate the 2 phillips
head screws underneath the front console and
remove them. Locate and remove the 2 phillips
head screws on the throttle handle (the throttle
handle base should remain)
1. Locate and remove the 2
screws under the console and the 2
screws that secures the throttle
lever.
2. Using a “2mm” hex head tool, loosen the 2 set
screws slightly (do not remove the screws).
3. Turn the key to the on position and connect the
DS100 programmer. With the programmer on go
to the SET UP option and verify the Buzzer Volume is on 2 or higher. Then go to the SPEED
LEVER IN NEUTRAL OPTION. A neutral reading
will cause the neutral alarm to sound until the
programmer is taken out of this option, but if you
are experiencing 6 flashes on the Status Indicator
LED, the throttle pot needs to be re-calibrated.
4. To re-calibrate the throttle pot, leave your DS100
programmer hooked up, and use a small flat
common screwdriver to adjust the throttle pot.
Turn the pot clockwise or counter clockwise until
your neutral alarm sounds. When you have
re-calibrated the pot, tighten the two set screws.
Engage the brake lever and turn the key off then
back on. Look at the Status Indicator LED, you
should notice a solid green LED, if you do, you
should be able to drive the scooter. Test drive the
scooter while the wheels are still raised.
Power Mobility Guide
Rev. 2/08 page # 7
5-6
2. Loosen the two “2mm” hex
head screws slightly.
3 & 4. Using the DS100
programmer to calibrate the
throttle potentiometer.
Service & Parts Education
SCOOTER PROGRAMMING INSTRUCTIONS
1. Turn OFF the scooter.
2. Remove the seat, the foot board mat, and the controller cover pan.
WARNING
The scooter cannot be driven while the programmer is
plugged into the controller. Before making any connections
to the controller either elevate the drive wheels, or secure the
scooter.
3.
4.
5.
6.
Turn the scooter ON.
Locate the programmer socket.
Remove the protective plug, and plug in your scooter Programmer.
Press the MENU key to scroll through all of the menus available (see chart below).
Main Menu Options:
1) Setup Menu - Allows the scooter to be customized for the user’s driving preferences or
environment. Adjustable feature include:
• Acceleration
• Deceleration
• Forward Speed
• Reverse Speed
• Reduce Speed
• Buzzer Volume
• Sleep Time
• Park Brake Delay
2) Options Menu - Allows you to change two factory-preset values.
• Pot Reverse
• Enable Sleep
• Sleep Beep
• Sound Fault
3) Speed Lever in Neutral Menu - Allows you to calibrate the throttle about neutral.
4) Controller Version Menu - Provides you with the version of the controller software.
HOW TO MAKE ADJUSTMENTS IN THE SETUP MENU
From the Setup Menu Display, press ENTER to scroll through the options.
1. The first option is ACCELERATION (Factory Default 3)
• Press the VARY key to change the current rate.
- Range: 1 - slowest acceleration to maximum forward speed
10 - fastest acceleration to maximum forward speed
• Press ENTER to confirm the value when finished.
2. The second option is DECELERATION (Factory Default 7)
• Press the VARY key to change the current rate.
- Range: 1 - slowest deceleration from maximum forward speed
10 - fastest deceleration from maximum forward speed
• Press ENTER to confirm the value when finished.
3. The third option is FORWARD SPEED (Factory Default 10)
• Press the VARY key to change the current rate.
- Range: 1
- slowest forward speed
10 - fastest forward speed
• Press ENTER to confirm the value when finished.
Power Mobility Guide
Rev. 2/08 page # 8
5-7
Service & Parts Education
SCOOTER PROGRAMMING INSTRUCTIONS
HOW TO MAKE ADJUSTMENTS IN THE SETUP MENU (continued)
4. The forth option is REVERSE SPEED (Factory Default 4)
• Press the VARY key to change the current rate.
- Range: 1
- slowest reverse speed
10 - fastest reverse speed
• Press ENTER to confirm the value when finished.
5. The fifth option is REDUCE SPEED (Factory Default 5)
• Press the VARY key to change the current rate.
- Range: 1
- slowest limit of maximum forward speed and maximum reverse speed
10 - fastest limit of maximum forward speed and maximum reverse speed
NOTE: For example , if REDUCE SPEED is set to 7, FORWARD SPEED to 10 and REVERSE
SPEED to 6, maximum forward speed will reduce to 7, but maximum REVERSE SPEED will stay
at 6, as it is already lower than REDUCE SPEED.
• Press ENTER to confirm the value when finished.
6. The sixth option is BUZZER VOLUME (Factory Default 10)
• Press the VARY key to change the current rate.
- Range: 1
- a setting of 1 turns the horn/buzzer OFF
10 - any other value turns the horn/buzzer ON, 10 being the highest volume
• Press ENTER to confirm the value when finished.
7. The seventh option is SLEEP TIME (Factory Default 30 minutes)
• Press the VARY key to change the rate.
- Range: 5 min. - fastest sleep time setting for scooter (scooter powers down after 5 min. of inactivity)
60 min. - slowest sleep time setting for scooter (scooter powers down after 60 min. of inactivity)
• Press ENTER to confirm the value when finished.
8. The eighth option is PARK BRAKE DELAY (Factory Default 10)
• Press the VARY key to change the current rate.
- Range: 1
- fastest parking brake time engages after stop.
30 - slowest parking brake time engages after stop.
• Press ENTER to confirm the value when finished.
HOW TO MAKE ADJUSTMENTS IN THE OPTIONS MENU
1. The first option is POT REVERSE (Factory Default OFF)
• The Option Menu settings are either ON or OFF.
- Range: ON - Polarity of the throttle Pot is reversed. (Left Hand Drive)
OFF - Normal Polarity of the throttle Pot. (Right Hand Drive)
• Press ENTER to confirm the value when finished.
2. The second option is ENABLE SLEEP (Factory Default ON)
• The Option Menu settings are either ON or OFF.
- Range: ON - Sleep Time is enabled.
OFF - Sleep Time is disabled.
• Press ENTER to confirm the value when finished.
3. The third option is SLEEP BEEP (Factory Default ON)
• The Option Menu settings are either ON or OFF.
- Range: ON - Sleep Beep is enabled.
OFF - Sleep Beep is disabled.
• Press ENTER to confirm the value when finished.
4. The fourth option is SOUND FAULT (Factory Default OFF)
• The Option Menu settings are either ON or OFF.
- Range: ON - Sound Fault is enabled.
OFF - Sound Fault is disabled.
• Press ENTER to confirm the value when finished.
NOTE: ENABLING SOUND FAULT HELPS IN DIAGNOSIS OF THE SCOOTER, ALLOWING SERIES OF BEEPS TO
ASSIST IN TROUBLE SHOOTING.
Power Mobility Guide
Rev. 2/08 page # 9
5-8
Service & Parts Education
SCOOTER PROGRAMMING INSTRUCTIONS
HOW TO MAKE ADJUSTMENTS TO THE SPEED LEVER IN NEUTRAL
1. The SPEED LEVER IN NEUTRAL option is used to calibrate the throttle pot for neutral.
• This menu allows you to calibrate the throttle pot about neutral so that when the throttle is at rest (in
neutral), the controller sees a voltage that translates to zero speed. The default voltage for zero speed is
2.5 VDC.
- Range: After entering this menu option loosen the two set screws in the throttle pot assembly, and rotate
the throttle shaft slowly until the buzzer sounds. If the controller version is 2.46 or higher, the
status light will also glow.
• Press ENTER to confirm the value when finished.
CONTROLLER VERSION
1. The CONTROLLER VERSION Menu Option will display the current version of software.
SCOOTER SPECIFICATIONS
LYNX L-3
Overall Dimensions
Base length
Base Width
Step Height (floor pan to ground)
Seat Height (floor pan to seat)
Overall Height
Seat Dimensions
Width
Depth
Back Height
39.8”
26”
4”
14”-16”
36”
16.5”
14.5”
16”
Arm Dimensions
Length
Height between seat & arm
Width between arms
11.6”
9”
15”-22”
Speed Range
Travel Range
Weight Capacity
Incline Capablity
Tire Size
Front
Rear
Turning Radius
Product Weight
Front base section
Rear base section
Seat
Battery / Charger Box
Total Weight
Power Mobility Guide
Rev. 2/08 page # 10
LYNX L-4
0 - 5 mph
estimated 7 miles
250 lbs.
8 deg grade
8” x 2”
8” x 2”
39.4”
51.2”
30 lbs.
25 lbs.
24 lbs.
23 lbs.
103 lbs.
39 lbs.
25 lbs.
24 lbs.
23 lbs.
112 lbs.
5-9
Service & Parts Education
SCOOTER ERROR CODES
The scooter tillers are equipped with a status indicator LED that will flash diagnostic code
information. The status indicator LED will flash in burst, separated by a pause to provide
diagnostic information. See page 5-3 for tiller faceplate status indicator light
location.
Number
of Flashes
Fault
1
Battery needs
recharging
Will Drive
Battery charge is running low.
Recharge the batteries as soon
as possible.
2
Battery Voltage
too low
Drive
Inhibited
Battery charge is empty. Recharge
the batteries. If the Scooter is left
off for a few minutes, battery
charge may recover sufficiently to
allow driving for a short period of
time.
3
Battery Voltage
too high
Drive
Inhibited
Battery charge is too high. Scooter
will charge batteries when travelling
down slopes or decelerating.
Excessive charging in this manner
may cause this fault. Turn the
scooter power off and then back
on again.
4
Current Limit
time-out
Drive
Inhibited
The scooter has drawn too much
current for too long, possibly
because the motor has been
overworked, jammed or stalled.
Turn the scooter power off, leave
for a few minutes, and then turn
back on again.
The controller has detected a
shorted motor.
Check the wiring harness for
shorts and check the motor.
Power Mobility Guide
Rev. 2/08 page # 11
Impact on
Scooter
5-10
Notes
Service & Parts Education
SCOOTER ERROR CODES
(continued)
The scooter tillers are equipped with a status indicator LED that will flash diagnostic code
information. The status indicator LED will flash in burst, separated by a pause to provide
diagnostic information. See page 5-3 for tiller faceplate status indicator light
location.
Number
of Flashes
Fault
Impact on
Scooter
5
Brake Fault
Drive
Inhibited
Check that the park brake release
lever is in the engaged position.
The park brake coil or wiring is
faulty. Check the park brake and
wiring for open or short circuits.
6
Out of Neutral
at power up
Drive
Inhibited
Throttle is not in neutral position
when turning the key switch on.
Return throttle to neutral, turn
power off, and back on again.
Throttle may need to be
re-calibrated. Check Throttle wiring.
7
Speed Pot
Error
Drive
Inhibited
The throttle or its wiring is faulty.
Check for open or short circuits.
Throttle may not be correctly set up.
8
Motor Volts
Error
Drive
Inhibited
The motor or its wiring is faulty.
Check for open or short circuits.
9
Other Internal
Errors
Drive
Inhibited
Call Invacare Technical Services at
1-800-832-4707.
Notes
NOTE: If the SOUND FAULT ability is enabled the scooter will alarm the same number as
the flashing LED.
Power Mobility Guide
Rev. 2/08 page # 12
5-11
Roadrunner Mobility
Corporate Office
717 Lingco Drive Suite 211
Richardson, TX 75081
1-800-467-2668
www.roadrunnermobility.com
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