Vista Rail System Module.pdf - 第22页

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Chapter Issue 1 Sep 02 Technical Reference Manual 12.21

CALIBRATIONS

Board Transport

Belt Speed

The front and rear board transport belts (feeder belts) are driven independently

by two variable speed motors. Inevitably one motor drives faster than the other

motor. It is necessary to calibrate these motors so that they drive at the same

speed in either direction.

WARNING

LETHAL VOLTAGE. DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT.

ENSURE ALL ELECTRONIC COVERS AND MAIN MACHINE COVERS ARE

FITTED BEFORE OPERATING THIS EQUIPMENT.

The speed of both feeder belt motors is controlled by a MultiMove card situated

in the machine control enclosure and utilizes Pulse Width Modulation (PWM).

This is achieved by controlling the period of the ’ON’ control pulse provided by

the MultiMove control card. The pulse repetition rate is fixed at 125Hz.

Feeder motor speed is measured using a tachometer on the input or output

pulley and adjusted by using the Belt Speed Calibration Page in the machine

diagnostics.

NOTE

For belt speed calibration set up see Calibration Procedure of this section. For

detailed information on access and use of the diagnostics module refer to the

Diagnostics chapter of the User manual.

Motor speed software parameters is listed in the following table:

Calibration

Procedure

1. In Diagnostics, select Rail System.

2. Select Belt Speed Calibration, the following window is displayed:

Name Maximum Minimum Default Increment

Front L to R Speed 64000 0 32000 1

Rear L to R Speed 64000 0 32000 1

Front R to L Speed 64000 0 32000 1

Rear R to L Speed 64000 0 32000 1

Belt Speed Calibration

50000

63999

FRONT L TO R SPEED

FRONT R TO L SPEED

REAR L TO R SPEED

REAR R TO L SPEED

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12.22 Technical Reference Manual Chapter Issue 1 Sep 02

3. Using a tachometer fitted with the surface speed test wheel, positioned on

the input or output pulley of the front belt motor, measure the speed of the

motor left to right. Adjust the motor speed using Incr./Decr. to achieve a

speed of 29 - 31 metres/min.

4. Using Next repeat Step 3 for front right to left motor speed.

5. Select Next use a tachometer fitted with the surface speed test wheel,

positioned on the input or output pulley of the rear belt motor, measure the

speed of the motor left to right. Adjust the motor speed using Incr./Decr. to

achieve a speed of 29 - 31 metres/min.

6. Using Next repeat Step 5 for rear right to left motor speed

7. Select Save, the speed of the front and rear belt motors are now saved in

the machine configuration file.

8. Select Exit.

9. Select Exit.

10.Select Exit.

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Chapter Issue 1 Sep 02 Technical Reference Manual 12.23

TEST CYCLES For information on the Test Cycles function refer to the Screen Alignment

Chapter of this manual.