Milnor BICWUT01 manual Verify Output Voltage of D-to-A Board, Model-Specific Data

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Troubleshooting Basket Speed Errors on Single-motor Washer-extractors

Table 1: Model-Specific Data

Machine Model

Maximum

Maximum

Counts per RPM

Offset (D)

Frequency

Wash RPM

(C/RPM)

30022F_W

155

40

 

 

30022X_W

 

 

 

 

 

 

 

 

 

 

 

36030F_S

186

43

 

 

36030F_W

205

5

 

 

 

42026V_W

155

 

 

15

 

 

 

 

 

42032F_S

178

40

 

 

42032F_W

195

 

 

 

 

 

 

 

 

48040F_W

170

38

6

 

68036F_N

32

7

 

 

 

Important: Values shown are subject to change without notice. Contact Milnor

Customer Service for verification.

Note 1: The counts and offset values are configurable in controller software WUWESME, used in single- motor E-style and divided cylinder washer-extractors. Contact your dealer or the Milnor service department for assistance with these machines.

Display or Action

10:38 F0005S03 02:37 0195 RPM=A029/D030

10:38 F0005S03 02:37 0195 RPM=A029/D030

Explanation

The rightmost number of the bottom line indicates the desired (programmed) basket speed for this step. This value matches the value programmed in the wash formula.

The middle number of the bottom line indicates the current calculated basket speed. Input/output board #1 determines the time between each main pulley spoke passing the photoeye and reports this data to the processor board at each communication cycle, which is usually more often than once per second. The processor board filters the raw data from the input/output board and displays the most recent valid value.

Tip: Large variations in the achieved RPM value are possible early in extract steps because the valid range includes values from 0 RPMs to the maximum extract RPM of the machine. These variations have no effect on how the machine operates because of the frequency with which new data is reported.

4.Verify Output Voltage of D-to-A Board

If the microprocessor is displaying the correct calculated digital value, the next step is to verify that the digital-to-analog board is putting out the appropriate signal voltage.

1. Calculate the voltage of the signal that the D-to-A board should deliver to the inverter:

Vd = Cd / 409.5

Where:

Vd = Desired voltage

Cd = Desired counts per RPM

For example, assume the machine is configured as a 48040F_W and the desired wash speed is 24 RPMs.

a.From Table 1, we see that this machine model makes six counts per revolution and has an offset of 15.

PELLERIN MILNOR CORPORATION

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Contents Published Document Number BICWUT01 Page Pellerin Milnor Corporation Process Chart Troubleshooting Speed ErrorsPress Cancel/Escape to return to Program Menu item Verify Programmed SpeedVerify Inverter Parameters Verify Digital Value of Programmed SpeedCd = RPMd * C/RPM + D Verify Output Voltage of D-to-A Board Model-Specific DataDigital-to-Analog Board Measuring Control Voltage at D-to-A Board and InverterTroubleshooting the Inverter Yaskawa GPD 506 Model Yaskawa F7 ModelTesting the Motor

BICWUT01 specifications

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