Tormach 8L - 7.14 Axes Drive Subsystem

7: TROUBLESHOOTING
©Tormach® 2021
Specifications subject to change without notice.
Page 63 UM10753: 8L Operator's Manual (Version 0321B)
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Cause: The DC power supply PS1 is defective.
Probability How-To Steps Need More?
Medium
Measure for 24 Vdc nominal between wires 401 and 400.
Before you replace the DC power
supply, power off the machine (see
"Power Off the Machine" (page35)).
Cause: The Main Disconnect switch is in the Off position.
Probability How-To Steps Need More?
Low
Examine the Main Disconnect switch. If it’s not already in the On position,
turn it on.
If needed, measure for 115 Vac
nominal between wires 101 and
100/N.
Cause: The mains breaker is turned off.
Probability How-To Steps
Low
Examine the breaker. If it's not already on, turn it on.
Cause: The CB1 and/or CB2 circuit breaker tripped.
Probability How-To Steps Need More?
Low
1. Measure for 115 Vac nominal between wires 105 and 100/N.
2. Measure for 115 Vac nominal between wires 107 and 100/N.
Before you reset the tripped breaker,
power off the machine (see "Power Off
the Machine" (page35)).
Cause: The contactor K1 is defective.
Probability How-To Steps Need More?
Low
l If the contactor's red LED is on, the contactor is latched. Use a digital
multimeter to examine the power at K1-1 and wire 115.
l If the contactor's LED is not on, press and hold the Reset button and
observe the LED on K1:
o
If it's on, K1 has a latching circuit issue.
o
If it's not on, K1 may have a coil issue.
Contactor K1 energizes the DC-BUS
board, which provides 65 Vdc to the
machine. K1 can fail by not energizing
the coil, or the contacts could fail.
7.14 AXES DRIVE SUBSYSTEM
The axis motors are used to move the X- and Z-axis. The motors are powered by electronic driver modules (also referred to as axis drivers)
which receive control signals from the control board. The electronic driver modules are powered by the DC-BUS board. Travel limits are
established by limit switches when the machine is referenced.
To troubleshoot the axes drive subsystem, read the following:
7.14.1 outAll Axes Won't Move When Commanded 64
7.14.2 One Axis Won't Move (or Only Moves in One Direction), and Other Axes Move 64