08/2005 Overview of Alarms
2-21
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
• NC machine data
• Drive machine data
• Option data
• Setting data
• User variable
• Global subroutines
• Cycles and macros, as well as
• PLC machine data
• 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!
Program Con-
tinuation:
Switch control OFF - ON.
2110 NCK temperature alarm
Definitions: The temperature sensor has reached the response threshold of 60 degrees C +/- 2.5
degrees C.
Reactions: - Alarm display.
Remedy: In order to reset the sensor, the temperature must be reduced by 7 degrees C.
Program Con-
tinuation:
Clear alarm with the Delete key or NC START.
2120 NCK fan alarm
Definitions: 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.
Reactions: - Alarm display.
Remedy: Please inform the authorized personnel/service department. The unit with the fan and
NCK battery must be replaced.
Program Con-
tinuation:
Clear alarm with the Delete key or NC START.
2130 5V/24V encoder or 15V D/A converter undervoltage
Definitions: A failure has occurred in the power supply (FM357-2) to the encoder (5V/24V) or D/A con-
verter (+/-15V).
Reactions: - 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.
Remedy: 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.
Program Con-
tinuation:
Switch control OFF - ON.
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