15-2. ELECTRIC POWER STEERING
15-2-3
The internal protection system decreases the
assistance level available to protect its
electronic board. The normal assistance level
will return when riding conditions are back to
normal and the internal temperature decrease
and/or when the ripples in the electric circuit
decrease.
NOTE:
This reaction is a normal protective
behavior of the unit and it does not necessary
raise a fault in the cluster.
EPS SYSTEM DESCRIPTION
EPS Unit
The EPS unit is a self contained unit that
includes the steering gear, the EPS module, the
EPS motor and the torque sensor.
The EPS module provides DC power to the
motor. The amount and duration of that DC
power is determined by the inputs to the EPS
module. The direction in which the motor turns
is changed by reversing the polarity of the
circuit current.
The EPS motor does not
“spin”, but rather turns
in very small increments based on the amount,
duration, and direction of DC power delivered
by the EPS module.
EPS Unit protection
When the EPS unit temperature is above 100
℃
, all the EPS function will stop but the steering
can operate without power assist, when the
EPS internal board temperature decrease
below 90
℃
, the power steering will back to
normal and steering assist should resume
normal operation.
Steering Torque Sensor
The steering column is connected to the shaft
on the EPS unit. A small area of the EPS shaft
is magnetized. Inside the EPS unit, a torque
sensor surrounds the magnetized area of the
EPS shaft.
When the handlebar is turned, torque is applied
to the shaft, which tends to twist the shaft
slightly, deforming the magnetic field in the
shaft. The sensor detects the torque by
measuring the deviation of the magnetic field.
The torque sensor is very sensitive and can
detect very small changes in the magnetic field.
The harder the handlebar is turned, the greater
the magnetic deviation, the greater the power
steering assist.
EPS Mode
The EPS system normally provides two rider
selectable modes of operation.
MAX
provides maximum steering assist for
technical low speed riding in rough or
muddy terrain or for touring.
MIN
provides less steering assist for increased
feedback and aggressive trail riding.
Summary of Contents for BLADE 500
Page 1: ...SERVICE MANUAL TAIWAN GOLDEN BEE CO LTD ...
Page 5: ...Frame Number Engine Number SERIAL NUMBER ...
Page 25: ...1 GENERAL INFORMATION 1 20 Oil and Lubrication Points Brake Fluid Grease ...
Page 26: ...1 GENERAL INFORMATION 1 21 Gear Oil ...
Page 42: ...2 MAINTENANCE INFORMATION 2 16 Note ...
Page 57: ...4 1 FUEL INJECTION SYSTEM 4 1 9 WIRING DIAGRAM ...
Page 100: ...4 1 FUEL INJECTION SYSTEM 4 1 52 Fault Diagnosis EFI Circuit inspection ...
Page 101: ...4 1 FUEL INJECTION SYSTEM 4 1 53 Can not Start the engine or difficult to start inspection ...
Page 102: ...4 1 FUEL INJECTION SYSTEM 4 1 54 Idle flameout diagnosis ...
Page 103: ...4 1 FUEL INJECTION SYSTEM 4 1 55 Integrated Fault Diagnosis Program ...
Page 129: ...5 ENGINE REMOVAL 5 13 Remove the engine oil pipe nuts Remove the outlet water hose ...
Page 165: ...8 V BELT DRIVING SYSTEM 8 12 Notes ...
Page 166: ...9 1 FRONT DIFFERENTIAL 9 1 1 FRONT DRIVE FRONT DIFFERENTIAL ...
Page 197: ...10 ALTERNATOR STARTING CLUTCH 10 10 Note ...
Page 198: ...11 CRANKSHAFT CRANKCASE 11 1 L CASE R CASE ...
Page 217: ...11 CRANKSHAFT CRANKCASE 11 20 NOTE ...
Page 227: ...12 COOLING SYSTEM 12 10 Note ...
Page 228: ...13 BODY COVER 13 1 BLADE MODEL Mechanism Diagram ...
Page 237: ...13 BODY COVER 13 10 TARGET MODEL ...
Page 243: ...14 BRAKE SYSTEM 14 1 BRAKE FRONT BRAKE ...
Page 244: ...14 BRAKE SYSTEM AND BODY COVER 14 2 REAR BRAKE ...
Page 251: ...15 1 1 STEERING SYSTEM AND SUSPENSION 15 1 1 STEERING SYSTEM EPS MODEL ...
Page 252: ...15 1 1 STEERING AND SUSPENSION 15 1 2 NON EPS MODEL ...
Page 259: ...15 1 1 STEERING SYSTEM AND SUSPENSION 15 1 1 FRONT SUSPENSION ...
Page 263: ...15 1 1 STEERING SYSTEM AND SUSPENSION 15 1 1 REAR SUSPENSION ...
Page 268: ...15 2 ELECTRIC POWER STEERING 15 2 1 EPS Electric Power Steering ...
Page 305: ...65 10A 10A 10A 15A 15A 20A 10A 10A 10A 10A 9400uf 12V ECU 12V ...
Page 306: ...65 10A 10A 10A 15A 15A 20A 10A 10A 10A 10A 9400uf 12V ECU 12V ...