BENDIX SD-13-4784 Manuale Utente
1
®
SD-13-4784
Bendix
®
EC-14
™
AntiLock Controller Assembly
FIGURE 1 - EC-14
™
ANTILOCK CONTROLLER ASSEMBLY
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.
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
™
controller
is used in combination with the following components:
•
Four individual wheel speed sensors.
•
One combination modulator-relay valve.
•
One stand alone modulator valve.
•
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
housing and are environmentally protected by silicone
encapsulation. The metal housing, coupled with the design
of the digital electronics, is intended to provide a high degree
of protection from radio and electromagnetic interference.
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.
(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).
components (30 pin, Packard Electric, 150 series "Metri-
pack”) and one for connection to a combination
modulator-relay valve (4 pin, Molex).
MOUNTING
The EC-14
™
controller is specifically designed to be mounted
to a modulator-relay valve assembly, such as the Bendix
®
M-12
™
modulator (reference SD-13-4772). When the
EC-14
™
controller is mounted on a modulator assembly the
30 PIN WIRE
HARNESS CONNECTOR
DIAGNOSTICS
WINDOW
MOUNTING HOLES (4)