Siemens SINUMERIK 840D sl Series Diagnostics Manual page 838

Overview of Alarms
• Check the contact between the fixing screw and the controller module
Program Con- Switch control OFF - ON.
tinuation:
300511
Axis %1 drive %2 measuring function active
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The measuring function (e.g. frequency response measurement was active during the
switching on operation (power supply start-up active). Illegal activation of the measuring
function may have occurred internally.
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: • Stop the measuring function
• NCK reset
Program Con- Switch control OFF - ON.
tinuation:
300512
Axis %1 drive %2 direct feedback recognized
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The current rotor position and the position information read out by the encoder on ramp-
up were compared with each other and a deviation of more than 45 degrees was found.
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
- Alarm display.
- NC Stop on alarm.
- Channel not ready.
Remedy: • The deviation points to a local contamination of the encoder or an erroneous or loose
encoder assembly. The encoder must be examined accordingly.
Operation may commence again only after successful error correction as there is a risk of
uncontrollable movements!
• NCK reset
Program Con- Switch control OFF - ON.
tinuation:
300515
Axis %1 drive %2 power section heat sink temperature exceeded
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The temperature of the power section is acquired from a temperature switch on the heat-
sink. 20 seconds after the heatsink temperature warning, drive shutdown is initiated
immediately in order to avoid thermal damage to the power section (regenerative stop).
Reactions: - Mode group not ready.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005