Bendix Commercial Vehicle Systems EC-60 ESP CONTROLLERS ADV - Manual (Page 3)

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YAW CONTROL (YC)
Advanced ECU can include Yaw Control (YC) functionality,
which has the ability to apply brakes to individual wheel
ends, as well as applying the trailer brakes, to counteract
trailer “push” that, during certain maneuvers, could lead to
a loss-of-control or a jackknife incident. See "Yaw Stability"
on page 9 for further details.
ROLL STABILITY PROGRAM (RSP)
The Bendix Roll Stability Program (RSP), is an all-axle
ABS solution that helps reduce vehicle speed by reducing
the engine's throttle and applying all vehicle brakes as
needed, reducing the vehicle's tendency to roll over. RSP
focuses on reducing the vehicle’s speed below the critical
roll threshold during direction-changing maneuvers such as
driving on curved highway exit ramps or obstacle avoidance
maneuvers on dry, high friction surfaces. See "Advanced
ABS with Stability Control" on page 12 for further details.
WARNING
During an RSP system intervention, the vehicle
automatically decelerates . RSP can slow the vehicle
with or without the operator applying the brake pedal,
and even when the operator is applying the throttle .
COMPONENTS
The Bendix EC-60 controller’s ABS function utilizes the
following components:
• Bendix ® WS-24 ™ wheel speed sensors (4 or 6,
depending on configuration). Each sensor is
installed with a Bendix Sensor Clamping Sleeve
• Bendix ® M-32 ™ or M-32QR ™ Pressure Modulator
Valves (4, 5, or 6 depending on configuration)
• Dash-mounted tractor ABS Indicator Lamp
• Service brake relay valve
• Dash-mounted trailer ABS Indicator Lamp
• Optional blink code activation switch
• Optional ABS off-road switch
90° Speed
Sensors
Straight Speed
Sensors
Sensor
Clamping
Sleeve
FIGURE 2 - BEnDix ® WS-24 ™ WHEEL SPEED SEnSORS
Delivery
(Port 2)
Supply
(Port 1)
Exhaust (Port 3)
Electrical
Connector
M-32QR ™
Modulator
M-32 ™
Modulator
FIGURE 3 - M-32 ™ AnD M-32QR ™ MODULATORS
The Bendix EC-60 controller ESP/RSP function utilizes the
following additional components:
• Steer Axle Traction Control Valve (may be integral
to the service brake relay valve or a stand-alone
device)
• Dash-mounted ESP status/indicator lamp (also
serves as the ATC status/indicator lamp)
• Bendix SAS-60 ™ Steering Angle Sensor (mounted
to the steering column - See Figure 4)
CAUTION : When replacing a steering wheel,
take care not to damage the Steering Angle Sensor
or interfere with its operation, and the Steering Angle
Sensor must be recalibrated (see Troubleshooting
section)
• Bendix ® YAS-60 ™ or YAS-70X ™ Yaw Rate/Lateral
Acceleration Sensors (typically mounted to a cross-
member near the back of the vehicle cab)
• Brake Demand Sensors (installed in the primary
and secondary delivery circuits)
• Load Sensor (typically installed in the suspension
air bag)
• An additional Modulator Valve (Bendix ® M-32 ™ or
M-32QR ™ Pressure Modulator Valve) that controls
pressure apply to trailer brakes during system
intervention
Straight
Connector
90°
Connector
FIGURE 4 - STEERing AngLE SEnSORS