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Siemens AG 2001 All rights reserved 6FC5198–jAB40
1–10
SINUMERIK 840C / SIMODRIVE 611–D (DA)
6 Start-up due to system error Acknowledgement key
POWER ON
Start-up of the control shows that a fatal error was present before reset/power off (e.g. obligatory re-installation is
activated. Alarm 5 can be set in conjunction with alarm 6. EPROM error, DRAM error, processor exceptions).
Re-installation is necessary as data loss or corruption is to be expected (no data consistency).
The NCK unit must be completely re-installed.
Cause of error can be eliminated as follows:
a) Replace hardware
b) Report the software error leading to the processor exception to the manufacturer of the control.
7 15 V undervoltage Acknowledgement key
POWER ON
Cyclic
Activates 15V voltage monitoring
Safe operation of the NC is no longer possible so NC Ready is cancelled.
Eliminate hardware fault
8 Wrong axis/spindle assignment POWER ON
S After modification of machine data
S On POWER ON
S Interlocking of NC START
S Removal of Mode Group Ready
S NC Ready relay drops out
S Machining stops
The NC machine data for axis assignment MD200* or spindle assignment MD400* have been input incorrectly or
transposed.
If error in MD 461* C axis definition:
S C axis must not be fictitious (MD 564*, bit 6)
S C axis must be defined (MD 564*, bit 7)
S Mode group numbers of C axis and spindle must be same
(MD 360*, MD 453*)
Check and correct machine data for axis and spindle assignment.
Cancel alarm with POWER ON.
9 Not enough memory for UMS POWER ON
S At POWER ON in normal mode, not in start-up mode
None
The RAM area reserved on the NC is too small for the UMS address lists for the modified system area.
Describe fewer elements (displays/texts) in modified system area (merge).
Applies up to SW 2 only
9 Overflow in altered system area POWER ON
When powering up the control
The UMS does not function
In the UMS, an altered system area has been configured that exceeds the memory area.
Configure UMS properly
Applies as from SW 4
Scan
Effect
Explanation
Remedy
Scan
Effect
Explanation
Remedy
Scan
Effect
Explanation
Remedy
Scan
Effect
Explanation
Remedy
Note
Scan
Effect
Explanation
Remedy
Note
1 Alarms
1.5.1 Alarm description
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