Centroid M400 - Page 292

M-Series Operator’s Manual 4/9/15 15-4
Number Message Cause & Effect Action
409 _ axis lag Lag Distance (Allowable Following
Error) is detected on any axis for more
than 1.5 seconds.
All axis motion is stopped and the CNC
program is aborted. The probable causes
of this error are:
1. The machine is doing a very heavy
cut.
2. The maximum rates or the acceleration
values for the motors are set too high.
3.The motors are undersized for the
application
1. If the problem is occasional heavy
cuts, slowing down the cutting feedrate
can solve the problem.
2. If the problem only occurs on high
speed moves then either the maximum
speed or the acceleration is set too high.
Lower the values in the Motor Setup
screen or run Autotune again to
determine new values.
3. If there are persistent lag errors in
normal operations, this indicates that the
motors are too weak to handle the
required loads. Increase the gear ratios
or get more powerful motors.
410 _ axis position
error
A position error > 0.25 inches is
detected on any axis. All axis motion is
stopped, power to the motors is released
(all servo drive commands cease) and
the CNC program is aborted.
The probable causes of this error are:
1. The motor is wired up backwards.
2. Noise is getting into the system via
the motor cables (the line integrity has
been violated).
3. An encoder error occurred.
1. Try to slow jog the motor and watch
the DRO position. If the position on
the DRO goes opposite the direction
indicated on the jog button, then the
motor is wired up backwards. Change
the motor wiring.
2. Check the motor cabling paying
particular attention to the ground
connections. Replace the cable if it is
damaged or repair the motor
connections.
3. Jog the motor awhile, at the
maximum rate, using the fast jog
buttons. (Check the fast jog rate in the
motor jog parameters screen to make
sure it is set equal to the maximum
motor rate.) If the motor seems to
jump around rather than accelerate and
decelerate smoothly then you are
probably fighting an encoder error.
Swap the motor with one from another
axis and see if the error follows the
motor. If it stays with the axis, replace
the MPU11. If it follows the motor,
replace the motor cable. If the problem
still persists, replace the motor and
encoder.