DAF LF45, LF55 Series. Manual — part 39

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2-1

ECAS-2 customer parameters

ECAS-2

DAVIE XD diagnostics manual

8

2. ECAS-2 CUSTOMER PARAMETERS

2.1 INTRODUCTION

Customer parameters
Customer parameters are the settings of an

electronic system. The customer parameters

permit adapting control functions of a system to

the customer's particular wishes and/or needs

within certain limits. The customer parameters

are stored in a list in the memory of the electronic

unit. Customer parameters can be modified using

the programming feature of DAVIE XD.

Programming using DAVIE XD is only possible if

the logged-in user has been registered as a

"Master Technician".

Note:

Erroneous settings of customer parameters may

affect the action of control functions to such an

extent that they function eratically or not at all.

After modification of the settings the (modified)

customer parameters must be stored in the

electronic unit using the programming function in

the customer parameter overview.

Customer parameter names and codes
Each customer parameter in a system has its

own name and code. The following explanation of

the customer parameters includes only the

codes. The availability of a customer parameter

in a system depends on the programmed

software in the electronic unit. The programmed

software depends on the vehicle configuration/

identity card data.

Standard values
Standard values, options and setting ranges may

vary according to the software variants of

DAVIE XD and the system. This is why they have

not been included in the following explanation of

the customer parameters.

ECAS-2

2-2

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ECAS-2 customer parameters

DAVIE XD diagnostics manual

8

2.2

E

X

P

LANATORY

NOTES

TO ECAS-2

CUSTOME

R

PARAME

TERS

ECA

S

Cu

stom

er

para

meter

c

o

de

Exp

la

n

atio

n

D

e

p

en

de

nc

es:

Notes

Minimum

va

lu

e to be

se

t:

Ma

ximum

value

to

b

e

set:

4

-0

2

T

his parameter makes it

po

ssible

to increa

se th

e

tolera

nce fi

eld (hysteresis)

of the

sen

sor se

nsitivity.

Thi

s

is a

solu

tion

if a

cu

sto

m

e

r compla

ins a

bou

t unstabl

e

re

gul

ati

on by ECAS-2. If a larg

er

tol

erance

fiel

d is

ch

osen, th

e heig

ht

cha

nge

o

f th

e chassis must be

increase

d to al

low ECAS

to make a correction.

4

-0

3

T

his parameter ena

ble

s a certain

veh

icle slan

t to be

redu

ced or increa

se

d.

Redu

ctio

n ma

kes

the

veh

icle stand stra

igh

te

r (if

the

ca

libra

tion is correct, i.e

. the

sa

me hei

ght left and ri

ght).

Incre

ase will

make the vehi

cle slant fu

rth

er, thereb

y

enab

ling

u

nstable

h

orizontal

setting

s

to

be

preve

nte

d.

4

-0

5

T

his parameter rela

tes to

th

e

storag

e of

faul

ts in the

el

ectro

nic unit on the action of admitting ai

r to or

exha

usting

ai

r

from the

ai

r b

ello

ws.

A

fa

ult is i

den

tifie

d if the

hei

ght sen

sor read

ing

doe

s not

ch

ang

e d

uring

the

p

ro

grammed

time

whil

e i

t shou

ld

have do

ne becau

se of

the de

sired action

. Th

is

time can

be lengthened with this

pa

rameter. The

ECAS system

the

n waits long

er

b

efore sto

ring the fa

ult becau

se

the

heig

ht

sen

sor

re

adin

g has not ch

ang

ed.

4-

06

Th

is

p

ar

am

et

er

en

ab

le

s a

n

in

cre

as

e o

r d

ec

re

as

e o

f t

he

correction

o

f th

e normal dri

vi

ng leve

l,

wh

ich is

ma

de

whe

n th

e lifti

ng axle is raise

d.

An

in

crease wil

l correct the no

rmal

d

riving

le

vel more

when

the

axle

is

be

ing

rai

sed.

The

vehicle may exceed

the maximum permissible

heig

ht.

A de

cre

ase will

co

rre

ct th

e normal dri

vi

ng leve

l less

o

r

not

a

t all

w

hen the axle

is

be

ing rai

se

d.

The

grou

nd

cleara

nce ca

n be

come so

small

th

at the 3

rd

axle,

when

rai

sed, re

gula

rly tou

ch

es

a b

umpy

road

su

rf

a

ce

.

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3-1

System inspection with DAVIE XD

ECAS-2

DAVIE XD diagnostics manual

8

3. SYSTEM INSPECTION WITH DAVIE XD

3.1 CALIBRATING THE SENSORS

The sensors must be calibrated if the height and/

or pressure sensors of the ECAS unit are

replaced.

Note:

Calibration should be carried out with due care to

avoid physical injury and material damage.

Additionally, the trailing or leading rear axle may

be lowered automatically during these

operations.

When the unit is programmed, the standard

maximum chassis height of the rear axle and

subsequently the desired maximum chassis

height of the front axle are calibrated.

Explanation
1.

Place the gauges between the driven axle

and the chassis.

2.

Lower the chassis using DAVIE XD until it

rests on the gauges.

Note:

-

On the front axle the vertical rod is

adjustable. The height setting of this

vertical rod must be such that lever (1) is

horizontal when the driving height is

approx. 80 mm.

-

On high-volume vehicles the vertical rod

on the rear axle is adjustable. The height

setting of this vertical rod must be such

that lever (1) is horizontal when the

driving height is approx. 60 mm.

-

When the height sensors have been

calibrated, the pressure sensor is

subsequently calibrated automatically.

All the air is exhausted from the bellows.

3.

Now bring the chassis to the desired

maximum height at the front axle.

Note:

-

The maximum height of the chassis is

limited by the mechanical stop of the

shock absorber.

-

The highest level of standard sensor

sensitivity setting must be a minimum of

20 mm above the normal driving level;

otherwise an error will occur in the

height sensor values.

A.

Calibrating the sensors on replacing the

ECAS unit

ECAS-2

3-2

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System inspection with DAVIE XD

8

DAVIE XD diagnostics manual

If a height and/or pressure sensor has been

replaced, the sensor must be recalibrated.

The maximum desired chassis height at the rear

axle and the maximum desired chassis height at

the front axle are calibrated.

1.

Place the gauges between the driven axle

and the chassis.

2.

Lower the chassis using DAVIE XD until it

rests on the gauges.

Note:

-

On the front axle the vertical rod is

adjustable. The height setting of this

vertical rod must be such that lever (1) is

horizontal when the driving height is

approx. 80 mm.

-

On high-volume vehicles the vertical rod

on the rear axle is adjustable. The height

setting of this vertical rod must be such

that lever (1) is horizontal when the

driving height is approx. 60 mm.

-

When the height sensors have been

calibrated, the pressure sensor is

subsequently calibrated automatically.

All the air is exhausted from the bellows.

3.

Now bring the chassis to the desired

maximum height at the front axle.

Then bring the chassis to the desired

maximum height at the rear axle.

Note:

The maximum height of the chassis is limited

by the mechanical stop of the shock

absorber.

The shock absorber of the non-driven 3rd

axle may reach its stop before the shock

absorber of the driven axle.

The highest level of standard sensor

sensitivity setting must be a minimum of

20 mm above the normal driving level;

otherwise an error will occur in the height

sensor values.

B.

Calibrating the sensors when replacing

the height and/or pressure sensor