1
Knorr-Bremse Group
PD-203-430
ES1305
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DATA
P r o d u c t
C o m m e r c i a l V e h i c l e S y s t e m s
KB4TA ABS Module
Doc. No. Y250906 (EN - Rev. 000)
July 2016
The Knorr-Bremse
KB4TA module ES1305
is an
integrated ABS electronic control unit and dual
modulator valve for air braked trailers (semi-trailers,
centre-axle trailers and full trailers) with mechanical or
air suspension.
KB4TA
is powered via ISO 7638. As an additional safety
feature the ISO 1185 connection is included as standard
so, in the event that there is no ISO 7638 powering, the
ABS function is maintained.
Note: Stop lamp powering should only be considered
as a backup in the event of failure of the ISO 7638
connection. Stop lamp powering is not available in
the 4S/3M configuration.
The
KB4TA
module is designed for all normal
system variants from 2S/2M up to 4S/3M.
The configuration as supplied is 2S/2M, but with the integrated
auto-configuration the module detects additional sensors and
adjusts upward to 4S/2M automatically. Other configurations
and additional functions can be quickly and effectively achieved
using PC Software ECU
talk
®
. For 4S/3M applications an
additional external (third) ABS modulator is necessary (see
PD 203-360, Document No.
Y250908
).
Depending on the version, the
KB4TA
ECU has the option of various
auxiliary functions:
–
Odometer/trip counter/service interval
–
Reset to Ride (RtR)
–
Integrated Speed Switch (ISS)
–
ABS Active
–
Brake wear monitoring
–
Stop lamp powering
–
Headboard warning lamp
1)
–
24V output
Function
Standard Symbol as DIN ISO 1219
W
W
V
V
V
22
22
22
3
3
21
21
21
1.1
1-2
4
ES1305
V
22
23
24
1.2
ECU
The
KB4TA
module incorporates an anti-compounding feature. If the service and parking brakes are applied at the
same time, the anti-compounding feature prevents compounding of the forces applied to the foundation brake and
possible damage.
To ensure fast and effective trouble shooting, the
KB4TA
ECU can be used with a universal diagnostic interface which,
with diagnostic software ECU
talk
®
, allows connection to a personal computer (PC) for fault diagnosis, odometer
reading and velocity output parameter setting. Alternatively, a diagnostic blink code can be displayed on the towing
vehicle’s “in-cab” and/or the trailer headboard warning light. This can be activated via the stop lamp supply by
depressing the foot brake valve in the towing vehicle.
The
KB4TA
module is designed to be used as the service replacement part for the Knorr-Bremse KB3TA, A9 &
A18 trailer ABS modules.
1)
The use of a headboard mounted warning lamp is prohibited on vehicles approved to ECE Regulation 13
unless national requirements specifically allow the installation.
Y026787: 006: EN: Released: Fri Nov 11 11:18:50 CET 2016:
