Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 914)

Error and System Messages
Appendix B
B-42
Message Description
SYSTEM MODULE GROUND FAULT The 1394 system module has detected a ground fault. The system generates a ground fault
when there is an imbalance in the DC bus of greater than 5A. This drive error can be caused by
incorrect wiring (verify motor and ground wiring), motor malfunction, or an axis module IGBT
malfunction.
SYSTEM MODULE OVER TEMP The 1394 contains a thermal sensor which senses the internal ambient temperature. Causes
could be: that the cabinet ambient temperature is above rating. The machine duty cycle
requires an RMS current exceeding the continuous rating of the controller. The airflow access to
the 1394 is limited or blocked. This does not necessarily indicate a motor over temperature.
Motor over temperture sensors should be wired directly into the E-Stop string.
SYSTEM MODULE OVER VOLTAGE The 1394 system module buss voltage exceeds the maximum operating voltage. The dc power
bus is continuously monitored. If it exceeds a preset level (810V dc), a fault is sensed and the
power supply is disabled. There are several possible causes for this error.
• an undersized shunt requirement
• a blown shunt regulator fuse
• a malfunctioning shunt regulator transistor
• the power driver board is malfunctioning and incorrectly sensing the bus voltage
• an incorrectly set CNC acc/dec rate
• an excessive input line voltage
• the system inertia is too high causing excessive energy to be returned to the power supply bus
• a vertical axis with insufficient counterbalancing is overdriving the servomotor and causing excessive
energy to be returned to the power supply bus
• an incorrect power supply is installed in your system. Make sure you are using a CNC power supply
SYSTEM MODULE PHASE LOSS The 1394 system module has detected a loss of one of the input power phases. The
three--phase input line is monitored and a fault will be issued when a phase loss is detected.
Typical causes include, one or more input line fuses have opened, contactor malfunction, or
incorrect wiring.
SYSTEM MODULE UNDER VOLTAGE The 1394 system module voltage does not meet the minimum operating voltage. The DC power
buss shall activate the under voltage limit when the bus drops to 275 VDC or less. It will clear at
300 Vdc. Typical causes include low voltage on the three phase input.
T
(T) WORD IN CIRCULAR MODE An attempt was made to activate a tool length offset in a block that generates a circular move.
Tool length offsets can be activated only in linear blocks (or in non-motion blocks if AMP is so
configured).
T--WORD NOT ALLOWED WITH M06 NEXT TOOL IN T WORD was selected as the tool--change type in AMP while a T--word is
programmed in an M06 block.
TAN CIRCLE NOT IN 1ST BLOCK When editing a program, an attempt was made to digitize an arc using {CIRCLE TANGNT} as
the first block in the program. To use this digitizing format, the control must first have a tool path
programmed to make the arc tangent.
TEMPLATE PROGRAM NOT FOUND A transfer line quick view item was selected without the correct part program template present in
the protected directory. There are 19 transfer line cycles and there must be part program
templates QV01 thru QV19 present in the protected directory. Refer to your T-LINE-9 Quick
Start guide for details on replacing/restoring these part program templates.
THIRD SPINDLE NOT AVAILABLE AMP configuration error; spindle 3 can be configured only on a 9/290.
THIRD SPINDLE NOT CONFIGURED For spindle 3 to be programmable, it must be configured in AMP; a decode error.
THRDS/IN WORD FORMAT FINER THAN The word format programmed is requesting a finer resolution than the axis word format for the
corresponding axis allows. These word formats are set in AMP.
THREAD FEEDRATE TOO LARGE The lead is too large in threading mode. Program slower spindle speed.
THREAD LEAD ERROR The thread lead was too large or too small. This commonly occurs when cutting a variable
thread lead and before the end of the threading pass is reached. Either the lead goes to zero
for a decreasing lead thread, or an axis speed would exceed its maximum allowable cutting
feedrate when cutting an increasing lead thread.