Siemens SINUMERIK 840D sl Series Diagnostics Manual page 856

Overview of Alarms
300724
Axis %1 drive %2 number of pole pairs invalid
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: FDD: The configured number of pole pairs in the drive MD 1112:
$MD_NUM_POLE_PAIRS is outside the permissible range limits.
MSD: Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor fre-
quency) or MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed) is not correct.
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.
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 1112: $MD_NUM_POLE_PAIRS (number of motor pole pairs).
Program Con- Switch control OFF - ON.
tinuation:
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.
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.
Remedy: Please inform the authorized personnel/service department. Match the number of
encoder marks of the motor measuring system in drive MD 1005: 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 Con- Switch control OFF - ON.
tinuation:
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.
Reactions: - NC not ready.
- The NC switches to follow-up mode.
- Channel not ready.
- NC Start disable in this channel.
- Interface signals are set.
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SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005