Citytrac 4200
Citymaster 1200
Citycleaner
Service Documents
For internal use only
Status
March 2009
Page
106 of 108
O p e r a t i o n
The clock runs as long as voltage is applied to Pin 8 (30) (starting at 00:00). When the operating voltage is applied to Pin 2 (15), the
time appears in the 7-segment display. On pressing the left-hand button briefly (< 3 s), the working hours appear, press again and the
mileage appears, followed by the total operating hours, then the total mileage and finally the speed. Pressing the button again calls
the clock back into the display etc. The work hours, work mileage, total operating hours, total mileage and division factor (refer to
configuration) are retained at an Pin 8 or Pin 2 even when no power is supplied.
The total operating hour counter continues to counts as long as voltage is applied to Pin 8 and Pin 2. The tank transducer is then
evaluated and the tank content depicted in the bar graph display. In addition, the pulses received at Pin 5 from the wheel motor
sensor is divided by a dividing factor and saved as the total mileage.
The speed display indicates the current speed with a delay of 2 s.
These display indicators cannot be adjusted by the operator.
The work hour counter counts when voltage is applied to Pin 7 in addition to Pin 8 and Pin 2. The work mileage counter also counts
the pulses divided by the dividing factor at Pin 5.
Select the button depicting a clock (see above) to set the time. Then press the button longer than 3 s until the hour digits flash. The
hour setting can then be incremented using the right-hand button.
On reaching the correct digit, press the button to set the minute. When the minute digits flash use the right-hand button to increment
the value displayed.
Press the button again to end programming of the time.
This button appears in order to set the work hours and mileage to zero.
Then press both buttons simultaneously for 3 sec until the work hours indicator flashes and a further 3 s until the setting returns to
zero.
Setting
To set the dividing factor for the work hours and total mileage counters as well as the speed indicator, a voltage is applied to Pin
8 and Pin 2 (Display on) and to configuration input Pin 6. Press the button longer than 3 s until the four-character dividing factor is
displayed and its highest unit flashes. The decimal places 0 to 9 of the dividing factor can then be set analogue to setting the
time, using the buttons (select and end) and (increment), beginning at the highest decimal place. The dividing factor
corresponds to the number of pulses provided by the speed generator at Pin 5 per 0.1 unit (0.1 km or 0.1 mi). It is set to value
3537 at the factory (km for CM 1200).
