Siemens SINUMERIK 840Di Diagnostic Manual page 728

Overview of Alarms
SIMODRIVE alarms
300725 Axis %1 drive %2 number of encoder marks of measuring system invalid
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The number of encoder marks of the motor measuring system in the drive MD 1005:
$MD_ENC_RESOL_MOTOR (number of encoder marks of the motor measuring system) is zero or
greater than the maximum input limit.
Reaction: 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.
Remedy: Please inform the authorized personnel/service department. Match the number of encoder marks of
the motor measuring system in drive MD 1005: $MD_ENC_RESOL_MOTOR (number of encoder
marks of the motor measuring system) to the encoder in use. (Default setting for motor measuring
system: (Default setting for motor measuring system: 2048 incr./rev.).
Program Switch control OFF - ON.
Continuation:
300726 Axis %1 drive %2 voltage constant is zero
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The value in drive MD 1114: $MD_EMF_VOLTAGE is set to zero.
Reaction: 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.
Remedy: Please inform the authorized personnel/service department.
For standard motors: Reset the drive (delete the bootfile) and repeat the startup.
For third-party motors: Check and, if necessary, refer to the motor data sheet to correct MD 1114:
$MD_EMF_VOLTAGE (voltage constant).
Program Switch control OFF - ON.
Continuation:
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© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
11/2006