3 – 682 HEIDENHAIN Service Manual iTNC 530
3.3.11 Status of HEIDENHAIN inverters
The HEIDENHAIN power supply units have several status signals which lead to error messages
on the control:
MP2195 is used to suppress the error message for each status signal.
In general these errror messages should not be suppressed!
Exception: If you are using a UE 2xx, the signals must be suppressed because this compact
inverter does not provide these signals.
Status signals that
are already low-
active or not
available during
control start-up
Warning and danger signals are low-active; i.e., line-break proof!
The handling of status signals of the HEIDENHAIN power supply unit that are already low-active
or not available during control start-up, varies depending on MP2195 bit 0.
MP2195 bit 0 = 0:
Missing signals cannot be detected with Module 9066 and do not result in an error message
when the drive is switched on.
MP2195 bit 0 = 1:
After the PLC program has been compiled, missing signals can be detected with Module 9066
and trigger an error message when the drive is switched on. Signals that are not provided by the
power supply unit (e.g. non-HEIDENHAIN inverter system, "older" HEIDENHAIN inverters) must
be suppressed with MP2195 (bit 1 to bit 6), because non-existent signals are always identified
as errors.
The SUPPLY.SPY table for the power supply modules contains the STATUS-SIG column for the
status signals of the power supply module. This column informs you, among other things,
whether the PF.PS.AC and PF.PS.DC is supported by the power supply module. This information
in SUPPLY.SPY is evaluated by the CC424 (B) and higher.
Status Signal Associated Error Message Possible Causes of Error
DC-link voltage too high
(ERR.UZ.GR)
8080 Uz UV 1xx too high Defective braking resistor (conversion of electrical
energy to heat energy not possible)
Defective infeed/regenerative feedback module
(energy recovery not possible)
Interruption in the primary supply (fuses, wires,
etc.) energy recovery not possible)
Heat sink temperature too high
(ERR.TEMP)
8040 Heat sink temperature UV
1xx
Excessive load of the power supply unit
Temperature in the electical cabinet too high
Fan defective
Temperature sensor defective
Unfavorable mounting of components
Excessive DC-link current
(ERR.IZ.GR)
8041 Excessive Iz in UV 1xx Overload of the machine while machining a
workpiece
Tool is worn
Power supply unit not ready
(RDY.PS)
8061 No inverter-ready signal Inverter defective
Control of inverter defective (load and main
contactor)
Excessive leakage current
(ERR.ILEAK
)
8060 Leakage current in UV 1xx
too high
Insulating problems (motor, cable, etc.)
Humidity has entered the motor
Status information of the HEIDENHAIN inverters can also be read with PLC module 9066
--> Ask your machine tool builder whether this PLC module is evaluated and how the
information is displayed.
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