HENNESSY INDUSTRIES Coats IBS 2000, Service Manual And Troubleshooting Manual

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Service Manual — COATS Model IBS 2000 • 9
Total Accuracy Verification (TVA)
Total Accuracy Verification or TAV means that when
the balancer shows zeros in the weight display after
balancing the wheel it is truly balanced. The model IBS
2000 includes software that will allow the user to check
the accuracy of his machine periodically. The procedure
is detailed below.
1. Go to the Main Menu and select SETUP. Press
enter.
2. Arrow through the selections to TAV. Press enter.
3. The menu will now display several “preset” selec-
tions to choose from, or the customer may wish to
SPECIFY. Press Enter.
4. If SPECIFY is selected, the menu will prompt to
enter the number of cycles desired. Enter the number
and press enter.
Note: If the preset number is less than 250
the first message will appear at the preset
number. Subsequent messages will also
appear at that interval.
Example A:
Cycles Since
Last Calibration Message
10 The preset number of TAV cycles has
been reached, do you wish to per-
form TAV?
20 The preset number of TAV cycles has
been exceeded, do you wish to per-
form TAV?
5. If NO is selected, the balancer will resume normal
operation.
Note: If the preset number is equal to or
greater than 250, the first message will
appear at the preset number and again
every 250 cycles.
Example B:
Cycles Since
Last Calibration Message
500 The preset number of TAV cycles has
been reached, do you wish to per-
form TAV?
750 The preset number of TAV cycles has
been exceeded, do you wish to per-
form TAV?
7. If YES is selected, the balancer will automatically
enter the calibration mode. Follow the instructions on
the display.
Error Codes
LED Error Codes
When the balancer is powered up, several communi-
cation checks are made. If the data is incorrect, or not
received the balancer generates the following error
codes in the weight amount LED's on the display.
LCD ERR - unable to communicate with LCD:
Displayed when the Display board is unable to commu-
nicate with LCD board. This halts the program. Check
the LCD ribbon, and all connections. Most likely the rib-
bon is not installed properly, backwards or on wrong
pins. Possibly the LCD board.
EE ERR - unable to communicate with the EE PROM:
Displayed when the EE PROM (on the display board)
cannot read or write. It cannot restore display settings,
this is a combination of messages 7 and 8. Replace the
display board.
LCD Error Codes
The following list of error codes, are Built In Safety
Features. When the balancer is cycled several operat-
ing parameters are checked. If one of these parameters
is not within tolerance, the machine will generate an
error message displayed on the LCD readout. An expla-
nation of these messages and troubleshooting proce-
dure is listed below:
#1 - The Motor Speed Was Excessive: Displayed
when the motor exceeds normal operating speed at
any time during the cycle. Check the SSR (solid state
relay).
#2 - Time To Reach Minimum Operating Speed Too
Long: Displayed when time to reach the minimum
operating speed is greater than 20 seconds. Check
cables, SSR, or CPU.
#3 - Time To Reach Maximum Operating Speed Too
Long: Displayed when time to reach maximum operat-
ing speed exceeds 14 seconds. Check cables, SSR, or
CPU.
#4 - The Measurement Time Was Too Long: Displayed
after the motor gets up to speed but the time to set
GAIN (an internal measurement) is too long. Check
cables, optical encoder, or CPU.
#5 - The Measurement Time Was Too Long: Displayed
when the time to FILTER (an internal process) is too
long. Check cables, optical encoder, or CPU.
#6 - Not Used.
#7 - Internal Error Code: Displayed when a write error
on the EE PROM (of the CPU board) has occurred.
Calibration information, counters, etc. Replace CPU
board.
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