XYZ Machine Tools TRAK 2OP M11 Mill, Safety, Installation, Maintenance, Service And Parts List

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XYZ Machine Tools Ltd
TRAK  2
OP
Installation, Maintenance, Service & Part List Manual
Rarely do both the X and Y motor/servo systems fail at the same time and in the same way. If the
symptom involves both axes, the source of the problem is something that both motors have in common
such as the power supply.
When troubleshooting only the X-axis and Y-axis, the motors are interchangeable. The Z-axis is not
interchangeable with any other axis. Also, the X and Y servo cannot run the Z axis motor. If you try to do
so, a fault will appear.
DANGER!
Do not work with the motors unless the power is disconnected from the machine. The motors are run by
220 VAC. There is possibility of death by electrocution or injury from moving axes!
WARNING!
Whenever a motor is removed or replaced it needs to be realigned so that the index pulse on the motor
is 180° from the home switch. Service code 505 should be used to perform this alignment. Also use
service code 500 to re-set the Ball lock locations and code 520 to re-set the ATC tool positions.
5.5.2 Servo Drivers
The servo drivers control the axes motors. They run on a single phase 220 volt power supply derived from
the power/control transformer. The servo drivers are located in the servo electrical cabinet on top of the
machine, see figure 5.5.2a. The X and Y axis servos are rated at 750W. The Z axis servo is rated at 1kW.
The servo has 2 separate 220 volt sources: control and main power. See figure 5.5.2b.
The control supply provides power to the servo control circuitry, including the LED display, only. This
supply is always on when the machine is on.
The main power supply provides energy to the power amplifier part of the drive, and so to the motors. This
supply is controlled by relay K1. This enables the computer module to kill the motors whenever the
machine is E-stopped or the servos disabled.
The computer module outputs a speed command to each servo drive in the form of a DC voltage of
amplitude ±10VDC. The sign of the voltage dictates the direction the motor rotates and the higher the
voltage; the faster the motor will turn.
Figure 5.5.2a – Inside of Servo Electrical Cabinet