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XYZ Machine Tools
ProTURN SLX 1630 ProtoTRAK SLX CNC Safety, Installation, Service & Parts List Manual
4.6.3
Main Electrical Box
Only qualified electrical engineers should work in this box.
The electrical box is made up of the following main components:
1.
AC drive – used to control the spindle motor.
2.
2 braking resistors – used to brake the spindle motor. To verify the resistors are
good, measure the resistance across B1 and B2 of the AC drive. It should read 32
ohms when both resistors are good and 64 ohms if 1 resistor is bad and one is
good. Values lower or higher than this could mean one or both resistors are bad.
3.
Spindle Control Module – used to control spindle related functions, indexer
option, and the remote e-stop. The spindle control module has (1) 5-amp fuse,
(1) 3-amp fuse and (1) 12-amp fuse. The spindle control module also has (6)
110 V outlets that supply power to the pendant, spindle, lube pump, indexer,
lamp, and the door fan.
4.
Cable breakout box – used to send encoder information to the pendant and
provide power to the motors.
5.
Servo drivers – servo drivers for the X and Z-axis motors.
6.
Power Module - The purpose of the power module is to fuse and distribute 415 V
3 phase power to the drive module assembly. L1 and L2 lines from the 3 phase
415 VAC is used for the primary side of the transformer to produce 110 V single-
phase power to the spindle control module. The power module has (3) 25 amp
fuses to protect the entire system. It also has (2) 4 amp and (1) 2 amp
secondary fuses. The power module also has a ground bar where all the panels
are grounded and a dual channel relay (safety relay) that is controlled by the E-
stop and E-stop reset button on the pendant.
