Milnor MWR09E5 Series General Operating And Troubleshooting page 45

The electrical resistance of the thermistor temperature probe decreases as the temperature sensed
by the probe increases (inverse relationship). The probe connects to the controller board at
MTA8. Components on the controller board convert the analog signal from the temperature probe
to a digital value. The temperature of the probe is calculated from this digital value.
Display or Action
ADC0 degC ADC1
1831 0027 0733 0435
Display or Action
ADC0
1831
degC
0027
Displays in Test Mode
4.2.2.3.
operation is an important part of troubleshooting the machine. However, testing for a specific
problem can often be done more efficiently by actuating specific outputs and grounding inputs
individually. The test mode provides a display for viewing input and output status, and for
actuating outputs.
Setting the DIP Switch for Test Mode
4.2.2.3.
1.
1. Lock off/tag off power to the machine.
2. Remove the cabinet top and rear panels to access the microprocessor controller.
3. Using the instructions in Section 2.1. "Configuring E-P OneTouch
Models", turn off position 8 of DIP switch SW1. See Figure 10.
Explanation
This is a typical display of the analog channels with the
mV
temperature probe at room temperature. The top line of the
display contains the field names, and the bottom line contains
the value of the field.
Explanation
This display shows a value of 1831 for analog-to-digital channel
0. The analog-to-digital components of the controller convert the
analog output from the temperature probe to a digital raw counts
value. The controller software reads this raw counts value and
converts it to a Celsius temperature.
The temperature shown here is derived from the displayed raw
counts value. This is the current temperature sensed by the
temperature probe, in Celsius degrees.
This display shows a value of 0733 for analog-to-digital channel
ADC1
1. This channel is not used, but is available for future
0733
applications.
This is the millivolts reading derived from the analog-to-digital
mV
value of channel 1. This value is not used.
0435
—Observing the action of inputs and outputs during normal
Chapter 4. Testing and Troubleshooting
®
Washer-extractor
PELLERIN MILNOR CORPORATION