Siemens SINUMERIK 840D Diagnostics Manual page 22

1 Alarms
Program Continuation:
2110
Definitions:
Reactions:
Remedy:
Program Continuation:
2120
Definitions:
Reactions:
Remedy:
Program Continuation:
2130
Definitions:
Reactions:
Remedy:
Program Continuation:
2140
Definitions:
Reactions:
1-22
• PLC basic program
• PLC user program, and all
• PLC user data
User data in the NCK and PLC (e.g. tool and workpiece data) that have been altered by
the manufacturing process since the last data backup must be updated manually to match
the present machine status!
Switch control OFF - ON.
NCK temperature alarm
The temperature sensor has reached the response threshold of 60 degrees C +/- 2.5
degrees C.
- Alarm display.
In order to reset the sensor, the temperature must be reduced by 7 degrees C.
Clear alarm with the Delete key or NC START.
NCK fan alarm
The fan consists of a 26 V DC motor with electronic commutator (rated speed: approx.
8700 rpm). The commutator signal is used for speed monitoring, response speed: < 7500
rpm.
- Alarm display.
Please inform the authorized personnel/service department. The unit with the fan and
NCK battery must be replaced.
Clear alarm with the Delete key or NC START.
5V/24V encoder or 15V D/A converter undervoltage
A failure has occurred in the power supply (FM357-2) to the encoder (5V/24V) or D/A con-
verter (+/-15V).
- NC not ready.
- The NC switches to follow-up mode.
- Mode group not ready, also effective for single axes
- NC Start disable in this channel.
- Axes of this channel must be re-referenced.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
Please inform the authorized personnel/service department. Check the encoder and
cable for short-circuits (the fault should not occur when you remove the cable). Check the
power feeder line.
Switch control OFF - ON.
The actual service switch position forces a SRAM to be cleared at the next Power
On (general reset active)
The initialization switch is currently set to overall reset. This means that the module's
SRAM is deleted with the next module reset. The NC data memory is cleared during this
operation.
- NC not ready.
- Interface signals are set.
- Alarm display.
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04