BENDIX ec-30 abs-atc controller Manuale Utente

The EC-30

™

 controller ABS ECU is available in different

hardware configurations in order to support various ABS,
ATC and  power line carrier (PLC) features.  See chart 3.

EC-30

™

 controller premium PLC hardware can be configured

for four or six sensors, with or without ATC, and PLC can be
disabled.

EC-30

™

 controller basic models can not be configured for

six sensors or ATC.

PLC hardware is needed to support PLC communication.

Always verify that you are working with the correct EC-30

™

controller by referring to the part number label on the ECU.

Effective March 1, 2001, all towing vehicles must control an
in-cab trailer ABS warning lamp.  Trailers built after this date
will transmit the status of the trailer ABS unit over the power
line (blue wire of the J560 connector) to the tractor using
PLC communications.

The PLC signal is usually broadcasted by the trailer ABS
ECU.  The application of PLC technology for the heavy vehicle
industry is known as PLC4Trucks.  The Bendix

®

 EC-30

™

controller premium with PLC, and basic with PLC, will support
PLC communication in accordance with SAE J2497.

An EC-30

™

 controller with or without PLC can be identified

by the individual part number label on the ECU.  Also, an
EC-30

™

 controller may have one of the following labels

applied:

An oscilloscope can be used to verify the presence of a
PLC signal on the power line.  The PLC signal is an amplitude
and frequency modulated signal.  Depending on the filtering
and load on the power line, the PLC signal amplitude can
range from 5.0 mVp-p to 7.0 Vp-p.  Suggested oscilloscope
settings are (AC coupling, 1 volt/div, 100 

µ

sec/div).  The

signal should be measured at the power leads of the
EC-30

™

 controller.  See figures 3 & 4.

The EC-30

™

 controller will not broadcast PLC messages

unless it is specially programmed to do so.  With this
standard configuration, an ABS trailer equipped with PLC or
a PLC diagnostic tool will need to be attached to the vehicle
in order to generate a PLC signal on the power line.

1 

 Required for all towing vehicles built after March 1, 2001.

4

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X

X

X

4, 6

X

X

X

X

X

4

X

X

X

X

X

X

4, 6

X

X

X

X

X

X

X

4, 6

X

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