KEMKRAFT KEI-850A User manual

KEMKRAFT
ENGINEERING, INC.
MODEL KEI-850A READOUT BOX
96-036.doc 1
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
INSTRUCTION MANUAL
CLEAR VISION DUAL INCLINOMETER BOX
MODEL # KEI-850A
GM TRUCK & BUS
REVISION DATE:
25-MAY-00

KEMKRAFT
ENGINEERING, INC.
MODEL KEI-850A READOUT BOX
96-036.doc 2
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
*INSTALLATION INSTRUCTIONS *
A) The KEI-850A Display box should be permanently installed in a location that is best for the
application. It is usually mounted straight out the drivers side window on a pedestal stand.
B) When the box is installed, place a vehicle in the alignment machine and install the
mechanical fixture onto the steering wheel. Ensure that the KEI-850A display box can be
easily viewed while loading an Unfixtured Clear Vision Tool onto a steering wheel.
* OPERATING INSTRUCTIONS *
NOTE: As always, these Steering Wheel Gauges are delicate, accurate, gauging tools
that need to be treated as such and therefore must be installed in a holder when
not in use. If these tools do not have a holder & are thrown down on a table
during use, the warranty will be void.
A) Apply power to the KEI-850A by turning on the power switch located on the bottom left part
of the enclosure. This power switch also doubles as a circuit breaker for the KEI-850A
Display box. Should the breaker ever trip the power switch only needs to be turned to the
off position and back on to reset the breaker.
B) After the power has been applied to the KEI-850A Display box the LCD display will have
this display.
C) Place the TOOL on the steering wheel. The display will read the following.
D) Follow the display instructions and rotate the steering wheel to 90 degrees. The display
will now display the following.
E) Follow the display instructions and bring the TOOL back to 0.00 Deg. The display will start
to read out the steering angle starting at 30.0 degrees. The program will jump back to
the start of the cycle if the SWG is rotated CCW past -5.00 degrees. This is the
purpose of this whole procedure, to always bind all of the hysteresis CW.
F) If the KEI-850A displays the following message, the calibration data is bad and the unit
needs to be calibrated.
G) Note: The 850A Box is interfaced to the Alignment Machines’ PLC to control the
SWGs’ vertical pneumatic cylinder.
PLACE TOOL ON
STRNG WHL or CAL
ROTATE STRNG WHL
90 deg CLOCKWISE
BRING SW BACK TO
0 deg & LOCK POGO
MEMORY ERROR
CALIBRT TOOL NOW

KEMKRAFT
ENGINEERING, INC.
MODEL KEI-850A READOUT BOX
96-036.doc 3
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
* CALIBRATION PROCEDURE *
NOTE: Place the cal stand on a surface that is very solid and stable. The angle transducer
inside the tool is very sensitive and any movement at all will cause the numbers being
displayed to fluctuate. During the calibration procedure the cal stand should not be
allowed to tip or move, on the table, because the cal stand might become unlevel and
reduce calibration accuracy. It would be advisable to attach the cal stand to the table (eg.
Destaco clamps) to reduce the possibility for errors.
A) Install the desired Clear Vision steering wheel set tool onto a calibration stand which can
be adjusted from +60 degrees to -60 degrees in 15 degree increments. The tool that is
placed into the cal stand during the cal mode will be the tool that is calibrated.
INSURE THAT THE BACK OF THE ROLLERS, ON THE TOOL, ARE PRESSING AGAINST
THE CALIBRATION STAND ROLLER SUPPORT AT ALL ANGLES. IF TOOL IS NOT
PARALLEL TO THE CALIBRATION STAND AT ALL TIMES, CALIBRATION VALUES WILL
NOT BE ACCURATE.
B) There are 2 LED's on the front panel, one labeled RUN MODE, and one labeled CAL
MODE. The green RUN MODE LED will be lit when the unit is in the standard run mode.
When the CALIBRATION push-button switch on the front panel of the KEI-850A Digital
Readout box is pressed, the green RUN LED will turn off and the red CAL MODE LED will
turn on. The CAL MODE LED will stay lit until you go back to the RUN MODE.
C) Press the CALIBRATION push button switch once and the display will read;
Press CAL switch
again to calibrate
If a calibration procedure is to be performed, press the CAL switch a second time and the
program will go into the cal procedure. If the cal procedure is not desired, a countdown
timer will countdown for 15 seconds and the program will go back to the RUN MODE. The
red LED should turn off and the green LED should turn back on.
D) If calibration is desired, press the CALIBRATION switch again and the display will read;
xxxx Tx,CAL STND
-60 deg, PRESS SW
xxxx: is the raw A to D (analog to digital) value displayed in Hexadecimal. It will change as
the tool is tilted. (0000 = most negative angle, 8000 ~ zero degrees, FFFF = most positive
angle). At -60 degrees, the hex value should be slightly greater than 0000, at 0 degrees
near 8000, and at +60 degrees slightly less than FFFF. If at -60 degrees, the hex values is
= 0000, or at +60 degrees = FFFF, check the hex value at 0 degrees. First double check
that the cal stand is level and set to zero degrees, and that the meter is displaying a value
near 8000 hex. If the value is not near 8000 Hex, adjust the transducer, inside the box on
the tool, by loosening the 2 mounting screws and tightening it back down so that it reads
as near 8000 hex as possible. If the display still reads FFFF at -60 degrees or 0000 at +60
degrees, the amplifier gain is to high and needs reducing. If this is the case, send the unit
back to Kemkraft for modification. The Hex value is displayed to observe when the number
settles out after the cal stand has been moved to a new position.
Tx: means it will display T1 if Tool 1 is in the cal stand or T2 if Tool 2 is in the cal stand.
CAL STND -60 deg, PRESS SW: means place the cal stand in the -60 degree position and
press the CALIBRATE switch when the Hex number has settled out. (It should settle out in
a second or two).

KEMKRAFT
ENGINEERING, INC.
MODEL KEI-850A READOUT BOX
96-036.doc 4
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
After the switch is pressed, the display will instruct you to place the cal stand to the -45
degree, than to -30 degrees etc. until +60 degrees is completed. When the cal stand is placed
in the +60 degree position and the CALIBRATE switch is pressed, the program will go back to
RUN mode and the calibration procedure for that tool is finished. The accuracy of the
calibration can be checked in the RUN mode by placing the cal stand into various positions
and observing the display values. If only one tool is used, the calibration procedure is
finished. If two tools are being used, and the other tool needs calibration, repeat steps A
through D for the second tool.
* SETTING TOOL DISPLAY OFFSET*
A) Install the desired Clear Vision steering wheel set tool onto a calibration stand which can
be adjusted from +60 degrees to -60 degrees in 15 degree increments.
B) Press the CALIBRATION pushbutton switch once and the display will read.
C) DO NOT press CALIBRATION pushbutton again. The display will read.
This display shows the user what the current tool display offset value.
Press the CALIBRATION pushbutton to change the offset value. The display will read.
D) Press the CALIBRATION pushbutton to cycle from +5.00 to –5.00 degrees in 0.50 degree
increments. Stop pressing the CALIBRATION pushbutton to set value.
CAL sw again=CAL
Timeout = offset
CAL SWITCH = OFFSET
X.XX deg offset
X.XX deg. OFFSET
TIMEOUT WILL SET

KEMKRAFT
ENGINEERING, INC.
MODEL KEI-850A READOUT BOX
96-036.doc 5
47650 Clipper Dr. Plymouth Twp., MICHIGAN 48170 (734)-414-6500
COMPUTER INTERFACE
The Amphenol Comm.#1 connector on the bottom of the box is the computer interface port.
BURKE E. PORTER / FORI INTERFACE:
The connector is set up for three wire RS-232 interface; ground, transmit and receive. The
interface cable plugs into the amphenol connector and on the other end of the cable is a 9 pin
"D" connector. The "D" connector plugs into any IBM or compatible computers' serial port.
When a Clear Vision Tool is used, the limit switch on the tool closes and 1.) displays the tools'
angle (on the KEI-850B box) and 2.) dumps the angle (in ASCII) out of the serial port and a
CR, LF.
SERIAL PORT PROTOCOL: N, 8, 1, 9600 BAUD
DUMP STRING: -xx.xx CR LF - (+/- sign of the angle)
x (tens digit)
x (ones digit)
. (decimal point)
x (tenths digit)
x (hundredths digit)
MERRILL INTERFACE:
The connector is set up for three wire RS-232 interface; ground, transmit and receive.
Connections, Protocol & Dump String are the same as Burke Porter. The only difference is
that the angle is transmitted every time the KEI-850B box receives a "Control E". ("E" is for
inquire.)
REMOTE COMMUNICATION PORT:
This Amphenol connector Comm. #2 is used for communicating to a KEI-325RD remote
display unit or allows two KEI-850 Digital Display units to communicate in a Master/Slave
setup.
* WARRANTY AND SERVICE INSTRUCTIONS *
Kemkraft Engineering, Inc. warranties this equipment against defects in workmanship and
materials for a period of 90 days from date of shipment. We will, at our option, repair or
replace products which prove defective during the warranty period. No other warranty,
expressed or implied, is given. KEI is not liable for consequential damages. Damage caused
to the equipment as a result of improper use or abuse, or unauthorized modification of the
instrument is not covered under this warranty.
For service contact: Kemkraft Engineering, Inc. 734-414-6500
47650 Clipper Dr. 734-414-6599 fax
Plymouth Twp., Michigan 48170