XPM2_XPM3 Technical Ref Manual Conveyor1.pdf - 第38页

VI TRO NICS-SOLTEC REFLO W SOLDERING SYSTEMS Oc tober 10, 2008 38 XPM 2 / XPM 3 Technical Reference M anual C onv ey or Sy stem s If the conv eyor mo tor does no t rotate, c heck the fol lowing:  Verif y that the conv e…

VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS

October 10, 2008

XPM2 / XPM3 Technical Reference Manual Conveyor Systems

CONVEYOR DRIVE SYSTEM

The oven controller supplies an analog voltage reference signal between 0 and 10 volts to the conveyor motor

electronics to set the desired conveyor speed. The A42 board divides it in half and passes it through an Opamp to

avoid loading and signal loss issues from the resistor voltage divider before it sends it to pin 9 on the Integramotor.

The internal Integramotor electronics require a regulated power supply between 20 and 28 volts to operate,

otherwise the electronics indicate a fault condition and the motor will not operate. The internal Integramotor

electronics control the motor speed based on a 0- 5VDC reference signal that is supplied by dividing the 0-10VDC

analog output voltage in half.

The speed of a brushless motor is not controlled by varying the voltage to the windings of the motor like a brush

type or a universal motor is controlled. The speed and rotation direction of a brushless motor is controlled in a

similar method to that of a stepper motor. Through switching the motor windings on and off in a specific sequence

for a specific direction. The faster the windings are switched on and off using the specified sequence the faster the

motor rotates.

One major difference with a brushless motor versus a stepper motor is that a brushless motor has built in hall-

effect sensors that are used by the drive electronics to sense and to regulate how fast the motor is rotating. A

stepper motor has no internal feedback and no speed regulation.

The internal Integramotor electronics switch the windings of the motor faster as the 0-5VDC reference signal is

increased while regulating the speed of the motor through the feedback from the built in hall-effect sensors.

A hall-effect sensor built into the conveyor motor supplies pulses to the oven controller, which is used by the

controller for feedback to close loop the conveyor speed to the setpoint by varying the analog voltage signal to the

conveyor motor electronics.

Integra Motor assembly Oriental Motor Assembly

Set up the Conveyor Drive within the Oven Operation Program.

NOTE: This operation may require a password.

G5 Power

supply

A42 Board

Motor

V1 Board Oriental

motor only

VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS

October 10, 2008

XPM2 / XPM3 Technical Reference Manual Conveyor Systems

If the conveyor motor does not rotate, check the following:

 Verify that the conveyor is switched on in the PC oven software.

 Verify that K37 is energized and that A1-K8 is also energized.

 Verify that 120 VAC is present at the G5 power supply or verify that the green LED on the front of the power

supply is on.

 If 120VAC is not present then make sure that A1-K8 is energized on the A1 board, that F68 is not tripped and

that the inrush current limiter on pins 1 and 2 of connector P52 on the A1 board are intact.

 Verify the analog voltage reference signal to the A42 board.

 The signal should be +10 VDC between pins 1(+) and 2 (-) on connector P2 of A42 when the analog output is

at full scale.

 If there is no signal present, make sure that the controller rack has +15 VDC at pin 4 of connector P26 of the

A1 board. (-15 is not present or required on the new controller)

 If +15 VDC is present , but the drive is not receiving +10 VDC, there is either a wiring error or the DI board is

faulty, or a poor wire connection.

If motor turns, but no speed is reported, check the following:

 Verify that the hex drive shaft is rotating.

 Verify that the sprocket installed on the hex drive shaft is also rotating.

 Verify that LED2 on A42 is flashing as each sprocket tooth from the sprocket on the hex drive shaft passes by

the fork shaped sensor on A42.

 If LED2 is not flashing on A42 and the hex shaft and sprocket are rotating then perform the following:

 Verify the alignment of the sprocket with the fork shaped sensor on A42. The sensing area on the fork shaped

sensor is on the top most edge of the sensor and only the tips of the sprocket teeth should be extending into

the opening on the sensor. If the sprocket teeth extend too far the sensor won't detect the gaps between each

sprocket tooth and will sense the hub around the sprocket teeth instead.

 If LED2 on A42 does not light or never changes state then test the following.

 Verify that 5VDC is present between pins 1(+) and 3(-) of connector P3 on A42. The 5VDC is required to

operate the logic components on A42.

 If the polarity is reversed or if connector P1 and P3 are reversed on A42 then A42 will have to be replaced

after the wiring has been corrected. Because reverse polarity and or 24VDC will permanently damage all of

the logic components on A42.

 If 5VDC is present and LED2 on A42 still doesn't change state then perform the following:

 Shut off the conveyor motor.

 Unplug connector P4 from A42.

 Loosen and remove the (2) 1/4-20 bolts that secure the bracket that A42 is mounted on to the front of the rail

width gearbox.

 With the A42 assembly separated from the sprocket on the hex drive shaft pass a small object back and forth

between the top most tip of the fork sensor while observing LED42 on A42.

 A pen or the tip of your finger can be used.

 If LED2 still does not change state and 5VDC is present between pins 1(+) and 3(-) of connector P3 on A42

then A42 is defective and needs to be replaced.

After the conveyor system has been repaired, run the conveyor calibration routine in the Oven Control Program.

VITRONICS-SOLTEC REFLOW SOLDERING SYSTEMS

October 10, 2008

XPM2 / XPM3 Technical Reference Manual Conveyor Systems

DRIVE MOTOR SERVICE & REPLACEMENT

Conveyor Drive Motor Replacement - MOTOR LOCATION

There are only two locations for the conveyor motor on all Vitronics-Soltec Reflow Ovens. On an oven with a left

To right conveyor, the motor assembly is in the front right corner of the oven. On an oven with a right to left

conveyor system, the motor assembly is on the front left corner of the oven.

Integra Motor Oriental Motor

CONVEYOR MOTOR REPLACEMENT

To remove/replace the Conveyor Drive Motor:

1. Open the Hood

2. Turn off the U.P.S. and disconnect all power from the oven.

3. Remove the sheet metal at the exit end of the end the oven to gain clear access to the motor and

components.

4. Remove the G5 power supply

5. Unplug the cable from the motor.

6. The Motor is attached to a mounting plate with four bolts. That plate is mounted with four bolts on the Oven

Frame Channel. Loosen the four bolts and slide the plate to the exit end of the oven. This will allow the

Chain to be removed from the Drive Sprocket without removing the Master Link from the Chain.

7. While supporting the Motor, remove the four bolts. Remove the motor, mounting plate and sprockets from the

Oven.

8. Rotate the Motor to permit access to the setscrews that secure the drive sprocket to the Motor Drive Shaft.

Loosen the setscrews and remove the sprocket, then remove the Motor from the mounting plate.

9. Install the new motor and drive sprocket on the mounting plate.

Reverse steps 7 through 1 to replace the Conveyor Drive Motor

Left to Right Conveyor