BENDIX EC-14 ANTILOCK CONTROLLER Manual

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Bendix EC-14
MOUNTING HOLES (4)
DESCRIPTION
GENERAL
Bendix trailer antilock systems utilizing the EC-14
electronic controller assembly provide axle braking control
for buses, trucks, and truck trailers. By controlling "wheel
lock-up" during aggressive braking, the trailer retains a high
degree of stability and steerability while braking, and vehicle
stopping distance may be reduced.
In order to provide axle control antilock, the EC-14
is used in combination with the following components:
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Four individual wheel speed sensors.
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One combination modulator-relay valve.
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One stand alone modulator valve.
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Antilock condition lamp (dash mounted).
PHYSICAL
The EC-14 ™ controller electronics, which regulate the function
of the antilock system, are contained in a die cast aluminum
housing and are environmentally protected by silicone
AntiLock Controller Assembly
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controller
FIGURE 1 - EC-14
encapsulation. The metal housing, coupled with the design
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of the digital electronics, is intended to provide a high degree
of protection from radio and electromagnetic interference.
A diagnostics display window with 9 light emitting diodes
(LEDs) and a magnetically actuated Reset switch is
incorporated in the housing for troubleshooting and
diagnostic purposes.
Two electrical connectors are currently used on the EC-14
controller, one for connection to the antilock system
components (30 pin, Packard Electric, 150 series "Metri-
pack") and one for connection to a combination
modulator-relay valve (4 pin, Molex).
MOUNTING
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The EC-14 controller is specifically designed to be mounted
to a modulator-relay valve assembly, such as the Bendix
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M-12 modulator (reference SD-13-4772). When the
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EC-14 controller is mounted on a modulator assembly the
30 PIN WIRE
HARNESS CONNECTOR
DIAGNOSTICS
WINDOW
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ANTILOCK CONTROLLER ASSEMBLY
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1