65
TRAK Machine Tools
Southwestern Industries, Inc.
ProtoTRAK SMX, K2, K3 & K4 & Retrofit Safety, Installation, Maintenance, Service and Parts List Manual
4.8.5
Spindle Control Electrical Box
The
spindle control electrical box is made up of the following main components:
1.
AC drive – used to control the spindle motor.
2.
4 output 110 volt outlets – 1 outlet is used to power the pendant, 1 is used to power the lube pump and is turned on
based on the spindle being on, 2 additional outlets.
3.
2 braking resistors – used to brake the spindle motor. The mechanical brake should not be used to brake the
spindle. To verify the resistors are good, measure the resistance across B1 and B2 of the AC drive. For 3 HP
Figure 19
Electrical Box Schematic