Specifications

Southwestern Industries, Inc.
ProtoTRAK

SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
54
the K2 and K3, and “.5 to .9 OHM” for the K4. If the Ohmmeter
reads "0 Ohms" or "OL", then replace Spindle Motor. Next, check
the resistance between L1 & Ground, L2 & Ground, and L3 &
Ground, using an Ohmmeter. The resistance should read "OL". If
not then replace Spindle Motor.
Spindle will not run because 110 V
power is not reaching the spindle
contactor
Check 110 V coming out of the AC e-stop port on the cable
breakout box. Relay failure in cable breakout box. Replace cable
breakout box.
3.5.2.1 Spindle Motor Hums or Will Not Run (for machine with the
optional Spindle Control Drive)
The spindle motor makes a constant humming noise during operation or will not turn on.
Note: machines can only be wired for 220 volts. 440 volts will ruin electrical components in the
machine. These components will not be covered under warranty.
Possible Cause Check This
Wrong voltage
Check the voltage to the machine before and after the
Spindle Drive with a Voltmeter. Also, check the
voltage to the Spindle Drive (L1, L2, and L3).
Poor wiring connections
Check all the wiring connections to the Spindle Drive
and Spindle Motor. See Electrical Connection
Improper wiring/jumper configuration
on the Spindle Motor
Check to make sure that the Spindle Motor has the
correct wiring/jumper configuration for 220VAC. See
Electrical wiring section.
Spindle Drive may be in "Local Mode"
and cannot be run from the Pendant
On the Spindle Drive, push the "DSPL" button until
"LO/RE" lights up. Use the "Up" and "Down" arrow
keys to choose between "Lo"- Local
(Run Spindle
Motor from Spindle Drive) or "rE" - Remote
(Run
Spindle Motor from the Pendant).
Spindle Motor is bad
Check the resistance of the Spindle Motor windings on
the Spindle Motor between L1 & L2, L2 & L3, and L1 &
L3, using an Ohmmeter. The resistance should range
from "1.0 Ohms" to "1.5 Ohms" for K2/K3 and “.5
Ohms” to “.9 Ohms” for K4. If the Ohmmeter reads "0
Ohms" or "OL", then replace Spindle Motor. Next,
check the resistance between L1 & Ground, L2 &
Ground, and L3 & Ground, using an Ohmmeter. The
resistance should read "OL". If not then replace
Spindle Motor.
Spindle Drive contains incorrect
parameters and is not programmed
correctly
Contact customer service.
Spindle Enable Signal not reaching AC
Drive
Verify LED on Spindle Control Board is on.
Forward/Reverse Switch is bad or
Spindle Control Board
Verify Forward or Reverse LED on Spindle Control
Board is lit.
3.5.3 Spindle Runs Backwards
The spindle motor runs in the opposite direction. The spindle will run in opposite
directions from high to low gear.