Siemens SINUMERIK 840D sl Series Diagnostics Manual page 846

Overview of Alarms
- Channel not ready.
Remedy: Please inform the authorized personnel/service department.
• Motor overloaded.
• Check the motor data. Possibly the machine current was too high as a result of incorrect
motor data.
• Check the temperature sensor (2nd sensor possible with MSD).
• Check the motor encoder cable.
• Motor encoder defective.
• Check the motor fan.
• Check the acceleration.
• If necessary, use a higher-performance motor.
• Winding fault in motor.
• 611D control module defective.
• Modify MD 1230: $MD_TORQUE_LIMIT (1st torque limit), MD 1235: POWER_LIMIT
(1st power limit) set too high.
Program Con- Clear alarm with the RESET key in all channels of this mode group. Restart part program.
tinuation:
300614
Axis %1 drive %2 time monitoring of motor temperature
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: The motor temperature (measured via the temperature sensor KTY 84 and fed to the
module through the motor encoder cable) has exceeded the temperature limit in drive MD
1602: $MD_MOTOR_TEMP_WARN_LIMIT for a longer period of time than permitted in
drive machine data 1603 $MD_MOTOR_TEMP_ALARM_TIME.
$MD_MOTOR_TEMP_ALARM_TIME (time stage motor temperature alarm).
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
Reactions: - Mode group 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: Please inform the authorized personnel/service department.
• Motor overloaded.
• Check the motor data. Possibly the machine current was too high as a result of incorrect
motor data.
• Check the temperature sensor.
• Check the motor encoder cable.
• Check the motor fan.
• Motor encoder defective.
• Check the acceleration.
• If necessary, use a higher-performance motor.
• Winding fault in motor.
• 611D control module defective.
• Modify MD 1230: $MD_TORQUE_LIMIT (1st torque limit), MD 1235: POWER_LIMIT
(1st power limit) set too high.
2-846
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
© Siemens AG, 2005. All rights reserved
08/2005