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Siemens AG 2001 All rights reserved 6FC5198–jAB40
1–9
SINUMERIK 840C / SIMODRIVE 611–D (DA)
1 Battery: Data loss at power off! Acknowledgement key
POWER ON
Cyclic
Data is not battery-backed after power off.
During operation: Do not interrupt the production process. Data will be lost if the control is switched off.
Run-up: Data has been lost. Obligatory re-installation is activated.
Backup battery is empty.
Replace the battery when the control is switched on
If data has been lost the whole NCK/PLC unit must be re-installed.
2 Overtemperature Acknowledgement key
POWER ON
Cyclic
The second temperature monitoring threshold has been triggered because the ambient temperature is too high.
NC program is not interrupted.
Safe functioning of the hardware can no longer be guaranteed, serious damage to hardware may result.
Processing is not interrupted directly. A contact is opened on the CSB which the NC user must use to take the
appropriate measures.
A low temperature level will eliminate the error.
Switch off control (hardware damage possible).
3 Fan failure Acknowledgement key
POWER ON
Cyclic
Fan monitoring is triggered because of incorrect fan functioning.
Safe functioning of the hardware can no longer be guaranteed, serious damage to hardware may result.
Processing is not interrupted directly. A contact is opened on the CSB which the NC user must use to take the
appropriate measures.
Eliminate the fan fault, e.g. by replacing the fan.
Switch off control (hardware damage possible).
4 System of units not allowed POWER ON
S POWER ON
S After modification of NC machine data
S Interlocking of NC READY
S Interlocking of NC START
S Interlocking of Mode Group Ready
S Machining stops
An illegal combination of machine data MD 18000 display resolution and MD 5002 input resolution has been
selected. Both data must use the same system of units
For rotary axes with a position control resolution smaller than = 0.5 10
–4
degrees, the function bit “High-reso-
lution rotary axis” must be set.
Check and correct machine data combinations. Then cancel the alarm with POWER ON.
5 Power failure protection / data loss Acknowledgement key
POWER ON
The power failure protection integrated in the software could not be executed correctly because of a hardware
fault.
Data loss in the NCK unit.
Obligatory re-installation is activated.
The whole NCK unit must be re-installed.
Eliminate hardware fault.
Scan
Effect
Explanation
Remedy
Scan
Effect
Explanation
Remedy
Scan
Effect
Explanation
Remedy
Scan
Effect
Exlanation
Remedy
Scan
Effect
Explanation
Remedy
1 Alarms
1.5.1 Alarm description
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