Southwestern Industries TRAK 2OP M11, Safety, Installation, Maintenance, Service And Parts List

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Southwestern Industries, Inc.
TRAK

2
OP
M11 Installation, Maintenance, Service, & Part List Manual
5.5.2 Servo Drivers
The servo drivers are used to control the motors. They are run on single phase 220 volt power.
Figure 5.5.2a illustrates the main components that are in the servo electrical cabinet. The servo
drivers are located in a box on top of the machine. The X and Y axis servos are identical and the
Z axis is unique. The X and Y axis is rated at 750 watts and the Z axis at 1000 watts.
The servo has 2 separate 220 volt power sources. See figure 5.5.2b. The control circuit
terminals power the LED display and the main terminals are used for the power circuit. When
the machine is turned on, 220 volts is present to power the display hence you should always see
lights on the display. If there is no display on one particular servo and the wiring is OK then the
servo will need to be replaced. Pressing the servo on button allows power to flow to the main
terminals of the servos via the K1 relay.
The computer module outputs a command to each servo drive that is between -10 and 10 volts.
The + and – voltage dictates the direction the motor rotates. The higher the voltage command
to the servo, the faster the motor will turn.
Figure 5.5.2a – Inside of Servo Electrical Cabinet