Kistler CWPTA User manual

Instruction
Manual
Wheel Pulse
Transducer
Type CWPTA
CWPTA_002-612e-
08.12_korrex

Foreword
CWPTA_002-612e-08.12_korrex Page 1
Foreword
Thank you for choos ng a K stler qual ty product
character zed by techn cal nnovat on, prec s on and long
l fe.
Informat on n th s document s subject to change w thout
not ce. K stler reserves the r ght to change or mprove ts
products and make changes n the content w thout
obl gat on to not fy any person or organ zat on of such
changes or mprovements.
©2012 K stler Group. All r ghts reserved. Except as
expressly prov ded here n, no part of th s manual may be
reproduced for any purpose w thout the express pr or
wr tten consent of K stler Group.
K stler Group
Eulachstrasse 22
8408 W nterthur
Sw tzerland
Tel. [phone]
Fax [phone]
nfo@k stler.com
www.k stler.com
K stler Automot ve GmbH
Competence Center Wetzlar
Charlotte-Bamberg-Str. 12
35578 Wetzlar
Germany
Tel. [phone]
Fax [phone]
nfo.kar@k stler.com

Wheel Pulse Transducer Type CWPTA
Page 2 CWPTA_002-612e-08.12_korrex
Content
1. Introduction ................................................................................................................................... 3
2. Important Notes .............................................................................................................................
2.1 For your Safety ..................................................................................................................... 4
2.2 D sposal Instruct ons for Electr cal and Electron c Equ pment ................................................ 5
2.3 Software Upgrades and Updates .......................................................................................... 5
3. Product Overview .......................................................................................................................... 6
3.1 General Descr pt on .............................................................................................................. 6
3.2 Features ............................................................................................................................... 6
3.3 Appl cat on ........................................................................................................................... 7
3.4 Accessor es ........................................................................................................................... 7
. Technical Data ............................................................................................................................... 8
4.1 Spec f cat ons ........................................................................................................................ 8
4.2 P n Ass gnments ................................................................................................................... 9
4.2.1 12 p n M23 Flansch, male ....................................................................................... 9
4.2.1.1 Sensor Connector ..................................................................................... 9
4.2.1.2 Cable ..................................................................................................... 10
4.2.2 8 p n M12 Stecker ................................................................................................. 11
4.2.2.1 Sensor Connector ................................................................................... 11
4.2.2.2 Cable ..................................................................................................... 11
5. Set-up and Connection ................................................................................................................ 12
5.1 Mount ng – General Notes ................................................................................................. 12
5.2 Sensor Mount ng J g ........................................................................................................... 13
5.3 Mont ng Instruct ons .......................................................................................................... 14
5.4 Connect ng the Sensor ....................................................................................................... 22
6. Troubleshooting ........................................................................................................................... 23
6.1 Cables and Power Supply ................................................................................................... 23
6.2 S gnal Errors due to ncorrect Mount ng ............................................................................. 23
6.3 Serv ce ................................................................................................................................ 23
7. Appendix ...................................................................................................................................... 2
Total pages: 24

Introduct on
CWPTA_002-612e-08.12_korrex Page 3
1. Introduction
Please take the t me to thoroughly read th s nstruct on
manual. It w ll help you w th the nstallat on, ma ntenance,
and use of th s product.
To the extent perm tted by law K stler does not accept any
l ab l ty f th s nstruct on manual s not followed or
products other than those l sted under Accessor es are
used.
K stler offers a w de range of products for use n measur ng
technology:
P ezoelectr c sensors for measur ng force, torque, stra n,
pressure, accelerat on, shock, v brat on and acoust c-
em ss on
Stra n gage sensor systems for measur ng force and
torque
P ezores st ve pressure sensors and transm tters
S gnal cond t oners, nd cators and cal brators
Electron c control and mon tor ng systems as well as
software for spec f c measurement appl cat ons
Data transm ss on modules (telemetry)
K stler also develops and produces measur ng solut ons for
the appl cat on f elds eng nes, veh cles, manufactur ng,
plast cs and b omechan cs sectors.
Our product and appl cat on brochures w ll prov de you
w th an overv ew of our product range. Deta led data
sheets are ava lable for almost all products.
If you need add t onal help beyond what can be found
e ther on-l ne or n th s manual, please contact K stler's
extens ve support organ zat on.

Wheel Pulse Transducer Type CWPTA
Page 4 CWPTA_002-612e-08.12_korrex
2. Important Notes
2.1 For your Safety
Please read carefully before operat ng the equ pment.
K stler s not respons ble for damage that may occur when
th s system s used n any way other than that for wh ch t
s ntended.
To assure safe and proper operat on, all suppl ed
equ pment, components and/or accessor es must be
carefully transported and stored, as well as profess onally
nstalled and operated. Careful ma ntenance and usage n
full accordance w th operat ng nstruct ons s mperat ve.
The equ pment should be nstalled and operated only by
qual f ed persons who are fam l ar w th dev ces of th s type.
Local regulat ons may not perm t the operat on of motor
veh cles on publ c h ghways wh le the equ pment s
mounted on the exter or of the veh cle.
Th s sensor must be mounted w th the care and
accuracy that prec s on test ng equ pment requ res.
Due to des gn, ax al load exceed ng 20 N w ll damage
the sensor! Due to des gn rad al load exceed ng 40 N
w ll damage the sensor!
Do not clean any sensor component w th steam!
Do not use defect ve or damaged equ pment,
components and/or accessor es. Do not mod fy or
change the equ pment or ts accessor es n any way.
Equ pment must be mounted f rmly and securely.
Improper use or mount ng of the equ pment may affect
the safety of the veh cle and/or occupants. The
equ pment must not be mounted and/or operated n
any way that may comprom se veh cle or and/or
occupant safety.
Do not mount equ pment, components and/or acces-
sor es near heat sources (e.g. exhaust).
The sensor and/or sensor components may be
damaged f power s appl ed for extended per ods,
espec ally n hot env ronmental cond t on.

Important Notes
CWPTA_002-612e-08.12_korrex Page 5
Use only or g nal equ pment, components and/or
accessor es ncluded n the scope of del very.
Always note correct p n ass gnments and operat ng
voltages when connect ng equ pment, otherw se t may
be damaged f not properly connected and/or ope-
rated.
We recommend to use only the cables ncluded n the
scope of del very. If you th nk t s necessary to use own
cables, please take spec al care of the correct p n
ass gnment.
K stler assumes no l ab l ty for damages caused due to
the use of cables other than del vered by K stler.
D sconnect power from the sensor f the veh cle s
stat onary or extended per ods.
For add t onal nformat on, please call our Hotl ne:
[phone] or ma l to hotl ne.kcd@k stler.com.
2.2 Disposal Instructions for Electrical and Electronic Equipment
Do not d scard old electron c nstruments n mun c pal
trash. For d sposal at end of l fe, please return th s
product to an author zed local electron c waste d sposal
serv ce or contact the nearest K stler Instrument sales
off ce for return nstruct ons.
2.3 Software Upgrades and Updates
K stler may from t me to t me supply upgrades or updates
for embedded software. Such upgrades or updates must
always be nstalled.
K stler decl nes any l ab l ty whatsoever for any d rect or
consequent al damage caused by products runn ng on
embedded software wh ch has not been upgraded or
updated w th the latest software suppl ed.

Wheel Pulse Transducer Type CWPTA
Page 6 CWPTA_002-612e-08.12_korrex
3. Product Overview
3.1 General Description
WPT sensors are un versally adaptable sensors for the
acqu s t on of veh cle wheel speed. The sensors del ver
1 000 pulses per rotat on (standard, other values on
request).
WPT sensors are ultra-compact and extremely l ght n
we ght. For max mum flex b l ty, the ncremental trans-
ducer un t of the WPT can be exchanged qu ckly and
eas ly.
Output s gnals generated by the WPT sensors prov de the
bas s from wh ch wheel rotat on speed, accelerat on,
d stance, and speed are calculated (measurements of th s
k nd are affl cted w th sl p and dependent of the dynam c
wheel c rcumference.
F g. 1: Wheel pulse transducer CWPTA…
3.2 Features
Easy nstallat on
Compact des gn and low we ght
Rugged hous ng
Reverse-polar ty protect on
Protect on standard IP67

Product Overv ew
CWPTA_002-612e-08.12_korrex Page 7
3.3 Application
WPT sensors can be appl ed for the follow ng measure-
ments:
Wheel sl p measurement
Accelerat on and brak ng tests
ABS test ng
Measurement of d fference between wheel speeds
when us ng more than one wheel pulse transducer (e.g.
w th all-terra n veh cles)
3. Accessories
Included Accessories Type/Art. No.
Power cable, l = 5 m KCD14921
Holder WPT KCD17165
Open-end wrench 10-13 KCD11281
Hexagon wrench KCD11291
Transport case KCD15176
Inlay for transport case KCD15178
Foam cover nlay KCD15181
Mult med a-CD ncl. software & manuals KCD11343
Optional Accessories Type/Art. No.
Collets 17 mm, 5 pcs KCD10070
Collets 19 mm, 5 pcs KCD10071
Collets 21 mm, 5 pcs KCD10072
Center ng star 5-lug KCD11294
Center ng star 4-lug KCD11293
Center ng star 3-lug KCD11295
Suct on holder for f x ng the safety l ne KCD16908
S gnal cable, l = 5 m, IP67, Open End KCD14897
S gnal cable, l = 10 m, IP67, Open End, KCD14898
S gnal cable, l = 5 m, 3 p n Lemo KCD14915
S gnal cable, l = 10 m, 9 p n D-Sub KCD15083

Wheel Pulse Transducer Type CWPTA
Page 8 CWPTA_002-612e-08.12_korrex
. Technical Data
.1 Specifications
Characteristic Mechanical Data
Perm ss ble rotat onal speed
Max mum
Cont nuous operat on
m n
-1
m n
-1
6 000
3 000
Ava lable pulse values
Standard
On request
pulses/rev
Pulses/rev
1 000
1 … 3 600
Operat ng temperature range °C –40 … 85
Protect on standard IP67
Shock res stance (DIN IEC 68-2-27) m/s
2
ms
2 500
6
V brat on res stance (DIN IEC 68-2-6) m/s
2
Hz
100
10 … 2 000
Characteristic Electrical Data
Perm ss ble load/channel, max. mA ±20
Pulse frequency, max. kHz 300
Reverse-polar ty protect on yes
Output s gnal
1)
2 channels A+B, 90° sh fted
1 zero mpulse/rotat on
Connectors
2)
8 p n M12
Electrical Data RS- 22 (TTL compatible)
Power supply, U
B
VDC 5 … 30
Power consumpt on w thout load
typ cal
max mum (w th nvers on)
mA
mA
40
90
S gnal level
H gh (m n.)
Low (max.)
V
V
2,5
0,5
R s ng and fall ng t me (max.) ns 200
Short-c rcu t proof outputs max. 1 connected
1)
all s gnals w th nvers on
2)
rad al flange connector on the hous ng, p ns separately sealed, IP67 n unplugged cond t on

Techn cal Data
CWPTA_002-612e-08.12_korrex Page 9
.2 Pin Assignments
.2.1 12 pin M23 Flange, male
.2.1.1 Sensor Connector
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Sh eld
Signal
S gnal B nverted
+ UB Sensor*
Zero pulse
Zero pulse nverted
S gnal A
S gnal A nverted
n.c.
S gnal B
n.c.
0 V (GND)
0 V Sensor*
+UB
On hous ng
* Sensor leads are nternally connected to the power
supply and can be used w th extens on cables for power
adjustment or regulat on of the transducer.
If sensor leads are not used, they must e ther be solated or
connected as follows: 0 V Sensor w th 0 V and UB Sensor
w th UB.
On type RS-422 the lead end must be covered w th a
correspond ng shaft res stor when extens on cables are
used.
Unused outputs must be solated pr or n t al operat on.

Wheel Pulse Transducer Type CWPTA
Page 10 CWPTA_002-612e-08.12_korrex
.2.1.2 Cable
Signal cable K-006-130-20-5m, 9 pin D-Sub, female
Power supply UB = 5 VDC
Pin
1
2
3
4
5
6
7
8
9
Sh eld
Signal
1 kΩ aga nst p n 5 and
p n 7 each
S gnal A
n.c.
n.c.
0 V (GND), 1 kΩ
aga nst p n 1
n.c.
+UB (5 VDC), 1 kΩ
aga nst p n1
n.c.
n.c.
on hous ng
Type 10465
Signal cable K-006-130-20-5m, 9 pin D-Sub, female
power supply UB = 10 … 30 VDC
Pin
1
2
3
4
5
6
7
8
9
Sh eld
Signal
Br dge to p n 7
S gnal A
n.c.
+UB (10 … 30 VDC)
0 V (GND)
n.c.
Br dge to p n 1
n.c.
n.c.
on hous ng
Type 10464
Signal cable K006.52.51, 3 pin Lemo
Pin
1
2
3
Signal
S gnal A
GND
+12 V
Type 10466

Techn cal Data
CWPTA_002-612e-08.12_korrex Page 11
.2.2 8 pin M12 Connector
.2.2.1 Sensor Connector
Pin
1
2
3
4
5
6
7
8
Signal
GND
+UB
S gnal A
S gnal A nverted
S gnal B
S gnal B nverted
0 mp
0 mp nverted
Type 14865
.2.2.2 Cable
Signal cable, 9 pin D-Sub, female
Power supply UB = 5 … 30 VDC
Pin
1
2
3
4
5
6
7
8
9
Sh eld
Signal
Br dge to p n 7
S gnal A
n.c.
+UB (5 … 30 VDC)
0 V (GND)
n.c.
Br dge to p n 1
n.c.
n.c.
on hous ng
Type 14921
Signal cable K-006-181-30-5m, 3 pin Lemo,
Pin
1
2
3
Signal
S gnal A
GND
+12 V
Type 14915

Wheel Pulse Transducer Type CWPTA
Page 12 CWPTA_002-612e-08.12_korrex
5. Set-up and Connection
5.1 Mounting – General Notes
The wheel pulse transducer mounts to the wheel lug nuts
v a adjustable mount ng collets. The tors onal protect on
rod (wh ch ma nta ns rotat on around the wheel ax s) s
aff xed to the veh cle body w th suct on holders. Follow ng
dev ces are requ red:
Mount ng d sk: F ts 3-, 4- and 5-lug r ms
Mount ng collets: Standard: 17, 19, 21 mm (other s zes
ava lable upon request)
Center ng stars: 3-, 4- and 5-fold star, opt onal
Tors onal mount ng: Jo nts, gu de rod, suct on holder,
ga ter seals)
F g. 2: WPT sensor, mounted on the front wheel

Set-up and Connect on
CWPTA_002-612e-08.12_korrex Page 13
5.2 Sensor Mounting Jig
F g. 3: Draw ng of WPT sensor w th mount ng equ pment

Wheel Pulse Transducer Type CWPTA
Page 14 CWPTA_002-612e-08.12_korrex
5.3 Mounting Instructions
Select the parts dep cted below.
F g. 4: Mount ng collets (1), reta ner screws w th washers
(2), mount ng d sk (3), hexagon nut dr ver (4)
Remove hubcap or any cover ng over wheel nuts and clean
d rt/debr s from wheel nuts. Then place the collets onto the
lug nuts.
F g. 5: Plac ng the collets
1
2
3
4

Set-up and Connect on
CWPTA_002-612e-08.12_korrex Page 15
Al gn the mount ng d sk w th the collets and aff x t w th
reta ner bolts and washers. Do not fully t ghten the bolts at
th s step!
Each mount ng slot on the d sk s marked to ensure proper
al gnment w th 3-, 4-, and 5-lug conf gurat ons.
The lobe of the washers must
show towards the collets.
A rough center ng of the mount ng d sk s ach eved by a
sl ght clockw se rotat on.
If you use center ng stars for mount ng, select the
center ng star that corresponds to the lug conf gurat on
(3x, 4x, or 5x) of the wheel on wh ch the sensor w ll be
mounted.
Each center ng star s f tted w th nylon knobs, wh ch
fac l tate pos t on ng and serve as leverage po nts.
F g. 6: 5-fold center ng star w th pos t on ng knobs
Sl de the center ng star onto the mount ng d sk hub and
rotate the center ng star so that ts edges press f rmly
aga nst the collet reta ner washers. Then, apply pressure to
the pos t on ng knobs on the center ng star, as shown n
F g. 7, and t ghten one of the bolts us ng the del vered hex
nut dr ver. Th s w ll ensure that the mount ng d sk s
properly centered on the wheel.

Wheel Pulse Transducer Type CWPTA
Page 16 CWPTA_002-612e-08.12_korrex
F g. 7: Center ng the mount ng d sk
Cont nue to hold the center ng star t ghtly aga nst the
mount ng washers, then t ghten the mount ng bolts n a
cross pattern. The dev at on of concentr c ty should be
w th n 0,2 mm (see page 23, "S gnal errors due to ncorrect
mount ng").
F g. 8: T ghten ng the screws

Set-up and Connect on
CWPTA_002-612e-08.12_korrex Page 17
Select the parts shown below.
F g. 9: WPT Sensor w th mount ng plate (1), mount ng
bolt (2), tors on mount ng assembly (3), suct on
mount (4), extens on rod (5)
If the transducer mount ng plate s not already mounted to
the transducer, sl de the plate onto the back of the
transducer as shown below and secure t by t ghten ng the
set screw.
F g. 10: Mount ng the sensor onto the mount ng plate
1
2
3
4
5
6

Wheel Pulse Transducer Type CWPTA
Page 18 CWPTA_002-612e-08.12_korrex
Sl de the transducer mount ng bolt through the hole at the
center of the transducer, then thread the bolt nto the hole
at the center of the mount ng hub. T ghten the bolt
securely us ng the knob.
F g. 11: Mount ng the sensor onto the mount ng d sk
Some veh cle body conf gurat ons may requ re the use of
the spacer shown n F g. 12 n order to mount the tors on
assembly parallel to the veh cle. The spacer s placed
between the mount ng d sk and the transducer. When
us ng the spacer, t s necessary to use the long transducer
mount ng bolt.
F g. 12: Sensor mount ng w th spacer