Components; Enclosure; Mounting - BENDIX EC-30 ABS-ATC CONTROLLER Manual

ABS / ATC
Assembly
ATR VALVE
FIGURE 2 - EC-30 ™ CONTROLLER WITH ATR VALVE

COMPONENTS

™
The EC-30 controller ABS function utilizes the following
components:
- Wheel speed sensors (4 or 6, depending on configuration)
- Electro-pneumatic ABS modulator valves (4)
- Dash mounted tractor ABS warning lamp (relay
controlled)
- Service brake relay valve
- Dash mounted trailer ABS warning lamp (towing vehicles
manufactured after March 1, 2001)
- Blink code activation switch (optional)
™
The EC-30 controller ATC function utilizes the following
additional components:
- ATC modulator - Integral to the ATR (antilock/traction
relay) valve assembly
- Dash mounted ATC active/warning lamp
- Serial communication to engine control module
(interfaces with throttle input and engine torque)
- ATC enable/disable switch

ENCLOSURE

The EC-30 ™ controller electronics are contained in a non-
metallic housing and are environmentally protected by a
hard epoxy potting compound. The design of the EC-30
controller electronics is robust against radio, electro-
magnetic and environmental interference.
A patented LED (light emitting diode) diagnostic display and
magnetic reset switch are incorporated in the housing for
simple, self-contained diagnostics.
™
The EC-30 controller utilizes a 30-pin and an 18-pin wire
harness to interface with ABS, ATC and vehicle system
components.
2
EC-30
EC-30 ™
EC-17
Controller
The EC-30
EC-17
ABS controller for OEM and aftermarket installations. The
EC-30
the EC-17
ATC
utilizes plastic mounting inserts to reduce mounting bolt
Modulator
corrosion, where the EC-17
(integral)
mounting inserts. The EC-16
metal enclosure.
The EC-30
has been simplified compared to the EC-17
ATC
controllers.
Modulator
The EC-30
Connector
faults, will illuminate for 2.5 seconds and then turn off.
The ABS warning lamp for EC-17
at power-up without faults, will illuminate for approximately
8 seconds and flash twice before turning off.
ECU
Model
EC-30
Controller
EC-17
Controller
EC-16
Controller
CHART 1 - ECU DIFFERENCES (EC-30
CONTROLLERS)

MOUNTING

ECU Only
The EC-30
cab or chassis as a stand alone ECU. See figure 1.
Valve Mounted EC-30
The EC-30
different valve models. The controller valve assembly is then
mounted in place of the standard service brake relay valve
on the vehicle. An assembly model designation is assigned
when the EC-30
relay) valve or an ATR (antilock/traction relay) valve. See
figure 2. Some models include bobtail proportioning and/or
ATC functions. See chart 2.
EC-30
™
Controller/Valve
Assembly
Models
CR-30
CR-30BP
AT-30
AT-30BP
CHART 2 - EC-30
™
Controller Comparison to EC-16
™ Controllers
™
controller has been designed to replace the
™ and the EC-16 ™ controllers as the standard Bendix
™
controller has a black plastic enclosure similar to
™
controller. However, the EC-30
™
™
™ controller ABS warning lamp power-up sequence
™
controller ABS warning lamp, at power-up without
Enclosure
™ Plastic with Plastic
Mounting Inserts
™ Plastic with Metal
Mounting Inserts
™ Metal Enclosure
™ controller can be bracket mounted to the vehicle
™ Controller
™
controller can be assembled on one of four
™ controller is mounted on an AR (antilock
™
ABS / ATR
Valve
™
AR-1 Valve
AR-2 ™ Valve
ATR-1 ™ Valve
ATR-2 ™ Valve
Brake Proportioning
™
CONTROLLER / VALVE ASSEMBLIES
™
and
™
controller
controller utilizes metal
controller utilizes a totally
™ and EC-16
™ ™
and EC-16 controllers,
ABS Warning Lamp
Power-Up Sequence
2.5 seconds on, then off
8 seconds on, two
flashes, then off
8 seconds on, two
flashes, then off
™ , EC-17 ™ , EC-16 ™
Added
Function Vehicle
Provided Application
None All
Bobtail Brake Tractors
Proportioning Only
ATC All
ATC & Bobtail Tractors
Only
™