Controller Inputs/Outputs - BENDIX EC-15 ANTILOCK CONTROLLER ASSY Manual

FIGURE 3 - EC-15 ™ CONTROLLER AND CONNECTOR STYLES
MOUNTING
The EC-15 ™ controller is available in two different mounting
styles. One model is designed to be mounted on an antilock
relay valve such as the AR-1
SD-13-4795). The AR-1 ™
R-12 ™ relay valve. When the EC-15
on an antilock relay valve the resulting assembly receives a
different designation. For example when the EC-15
controller is mounted on the AR-1
assembly is known as a CR-15
™
The other EC-15 controller model is intended for bracket
mounting to a frame member and is not attached to an
antilock relay valve.

CONTROLLER INPUTS/OUTPUTS

™
The EC-15 controller receives information from several
components in the antilock system and, based on these
inputs, issues commands or delivers information. Some
™
portions of the EC-15 controller both receive and deliver
commands and information.
PACKARD 30 PIN
CONNECTOR
™ valve (see Service Data Sheet
valve is a modified version of the
™ controller is mounted
™
™ valve the resulting
™
antilock controller relay.
INPUTS
Wheel speed information is provided to the EC-15
via a wiring harness from individual wheel speed sensors
located at or in the vehicle wheels. Working in conjunction
with an exciter or tone ring, wheel speed sensors provide
information to the EC-15
signal which varies in voltage and frequency as the speed of
antilock the wheel increases or decreases. The EC-15
designed to receive wheel speed information, from various
wheel speed sensor models, at the rate of 100 pulses per
wheel revolution. The EC-15
simultaneously receive, and individually interpret, speed
signals from four wheel speed sensors.
Vehicle power is supplied to the EC-15
ignition switch through a fuse or circuit breaker. The electrical
ground for the EC-15
OUTPUTS
Modulators, like the Bendix
™
the EC-15 antilock controller is able to modify driver applied
air pressure to the service brakes. The modulator is an
electrically controlled air valve that is located near the service
DEUTSCH 14 PIN
CONNECTORS
™
controller in the form of an AC
™
™ controller is able to
™ controller from the
™ controller is the vehicle chassis.
® ™
M-21 , are the means by which
™
controller
controller is
3