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TRAK Machine Tools
Southwestern Industries, Inc.
TRAK TRL Lathe, ProtoTRAK RLX CNC Safety, Installation, Maintenance, Service & Parts List
For layout and connectivity of the Electrical Cabinets, refer the drawings 29103-x in Section 7.
4.6.1 Checking A/C Voltage
This procedure tests for the 208 VAC for the control. Check the power input to the computer
module.
Use a Voltmeter, reading A/C volts
Acceptable range is 200V to 240V
Note: systems running consistently close to the high or low values may have problems when normal
voltage fluctuations push the voltage out of the acceptable range.
4.6.2 Checking Fuses
To locate the fuses and their sizes, refer to the Electrical Cabinet drawing 29103-x found in Section
7.
To check fuses:
1. Use a Mulitmeter (Volt/Ohmmeter); select “OHM” or “
”.
2.
Remove the fuse completely from the pendant display or computer module.
3. Place a lead of the meter on each end of the fuse.
A good fuse reads 0 (zero) or close to it.
A bad fuse reads Open or Infinity or OL (overload).
4.6.3 Main Electrical Box
The electrical box is made up of the following main components:
1.
AC drive – used to control the spindle motor.
2.
Spindle Motor Braking Resistors: 3 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. For the
1630, these connected resistors should measure 20 ohms (+-2 ohms). The 1845 and 2470
should read 10 ohms (+- 1 ohm) when the resistors are good. Values lower or higher than this
could be one or both resistors are bad. The 1630 uses (3) 500 watt 60 ohm resistors. The
1845 uses (3) 500 watt 30 ohm resistors. The 2470 uses (3) 1000 watt 30 ohm resistors.
When good your meter should read approximately 10 ohms.
3.
Computer Module – see section 4.6.4.
4.
Servo drivers – servo drivers for the X and Z-axis motors.
4.6.4 Computer Module Connections
The list below describes what takes place through each connection. Power reaches the AC IN
directly on the Computer Module. From there power is distributed through the system. This power
is used to send power to the Pendant through the I/O cable.
The following is the set of connections for the Computer Module:
Spindle Encoder input – CPC14
2 USB ports – not for users
Com ports – 1 and 2. COM1 for looking at the computer module BIOS and COM2 is a spare.
