28
TRAK Machine Tools
Southwestern Industries, Inc.
TRAK TMC Mills with ProtoTRAK RMX CNC Safety, Installation, Maintenance, Service & Parts List
2.8.1
Main Power to the Machine Connections
The 3 phase 220 voltage (208
–
240 V acceptable) is connected to L1, L2 and L3 at the power switch
inside the electrical box. Connect the ground wire as shown in the figures 2.8.1 and 2.8.2.
Figure 2.8.1
2.8.2
Transformer Option
The TRAK TMC comes with an optional step-down transformer, which takes 480 volts down to 220 volts.
The transformer comes with multiple taps to allow for up to 3 different input voltages. The 3 taps are
rated for 480 volts down to 220 volts. See figure 2.8.2a. The machine ships out from the factory with the
wires attached to the 440-volt taps. Please adjust these 3 wires depending on the input voltage to the
machine.
There is also a 200-volt and 220-volt tap on the secondary side of the transformer. In most cases the
wires will be on the 220-volt tap. As a general rule, we would like the output voltage from the
transformer to be between 220 and 230 volts. On a rare occasion where the customer
’
s shop is around
