Siemens SINUMERIK 840D sl Series Diagnostics Manual page 833

08/2005
- 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.
• Check max. power section current in MD 1107 $MD_INVERTER_MAX_CURRENT
(transistor limit current)
• Check the motor data (motor code)
• Check the controller data
• Motor has ground or winding fault
• Check the power section and motor terminals (including motor protection)
• Error in actual current measurement (if necessary, replace 611D power section or con-
troller module)
Program Con- Switch control OFF - ON.
tinuation:
300504
Axis %1 drive %2 measuring circuit error of motor measuring system
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: Signal level of the motor encoder too low or disturbed.
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.
• Check encoders, encoder lines and connectors between drive motor and 611D module.
• Check for temporary interruptions (loose contact) caused, for example, by movements in
trailing cable.
• Check the shield connection of the front plate of the closed-loop control module (top
screw).
• Use original, preassembled encoder cable from Siemens (high degree of shielding).
• If necessary, replace the motor, encoder and/or cables.
• With linear motor, check the signal level; possibly, the measuring scale of the open mea-
suring system is polluted.
• For a gearwheel encoder, check the distance between the gearwheel and the sensor.
Replace the sensor or the defective gearwheel.
• Replace the control module.
• Check the metallized intermediate circuit cover.
Program Con- Switch control OFF - ON.
tinuation:
300505
Axis %1 drive %2 measuring circuit error of absolute track, code %3
Parameters: %1 = NC axis number
%2 = Drive number
%3 = Fine error coding
© Siemens AG, 2005. All rights reserved
SINUMERIK 840D sl/840D/840Di/810D Diagnostics Guide (DA), 08/2005 Edition
Overview of Alarms
2-833