Siemens SINUMERIK 840D Diagnostics Manual page 554

1 Alarms
Reactions:
Remedy:
Program Continuation:
300508
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300509
Parameters:
Definitions:
1-554
- 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.
• Use original Siemens encoder cables (they have a higher degree of screening).
• Check the encoder, encoder cables and screen connection for damage.
• Check the shield connection on the front plate of the controller module (top screw).
• Replace the control module.
• Check MD 1016 $MD_COMMUTATION_ANGLE_OFFSET (commutation angle offset).
Switch control OFF - ON.
Axis %1 drive %2 zero mark monitoring of motor measuring system
%1 = NC axis number
%2 = Drive number
An error was detected in the number of encoder lines counted to modulo (16/10) on cross-
ing of the zero marker. Increments were lost or added.
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
- 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.
Please inform the authorized personnel/service department.
• Use original Siemens encoder cables (they have a higher degree of screening).
• Check the encoder, encoder cable and shield connection for loose contact or cable
breakage.
• Check the shield connection on the front plate of the controller module (top screw).
• For a gearwheel encoder, check the distance between the gearwheel and the sensor.
• Replace the encoder, encoder cable or control module.
• Check the metallized intermediate circuit cover.
• If a BERO proximity switch is used, the zero marker of the encoder is still being moni-
tored and not the BERO signal.
Switch control OFF - ON.
Axis %1 drive %2 converter frequency exceeded
%1 = NC axis number
%2 = Drive number
The motor has exceeded the maximum converter frequency fmax (see below). Converter
frequency = speed * number of motor pole pairs
Maximum converter frequency:
• FSD: fmax = 1.12 * minimum(1.2*MD 1400, MD 1147) * MD1112 / 60
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04