10 – 10 HEIDENHAIN Technical Manual TNC 426, TNC 430
10.2.2 Axis-Specific Error Messages without Control Reset
<Axis>: 1 to 9 = axes 1 to 9
S1 = spindle 1
S2 = spindle 2
A080 Op. state MCU
not equal CCU
n The automatic, SRG,
SBH, and SH operating
states of the MCU and
CCU are compared
cyclically. If the states
are unalike for over 200
ms, a stop 1 is output.
n Press CE to acknowledge the
error message.
n Switch on the machine.
n Inform your service agency.
• Check software version.
280 476-04
B800 Safe inputs
<Input> not equal
n Wiring error X65, X66
(,X67).
n Safety module
defective.
n Inform your service agency.
• Check the wiring X65, X66
(,X67).
• Exchange the safety
module.
280 476-09
Error message Cause Corrective action As of
NC SW
Error message Cause Corrective action As of
NC SW
8100 Warning motor
temperature from
<axis>
n If the motor temperature
continues to increase,
the unit will be switched
off.
• Motor overload.
• Machine parameters
incorrect.
n Reduce the motor load.
n Inform your service agency.
• Reduce machine
parameters.
280 476-01
8110 Warning I2t
monitoring of <axis>
n If the motor current
continues to increase,
the unit will be switched
off.
• Motor or power
module overload.
• Machine parameter
MP230x.x incorrect.
n Reduce motor or power
module load.
n Inform your service agency.
• Check machine parameter
MP230x.x.
280 476-09
8120 Heat-sink
temperature UM 1xx
<axis>
n Temperature of UM1xx
power modules’ heat
sinks too high.
n If the heat-sink
temperature continues
to increase, the unit will
be switched off.
n Stop the machine and let it
cool down.
n Continue working with lower
power (reduce the feed rate).
280 476-09
8400 No drive-on
command for <axis>
n Speed controller waiting
for drive-on command;
PLC is not sending a
drive-on command.
n Check the PLC program.
n Inform your service agency.
• Check software version.
280 476-09