Siemens SINUMERIK 840D Series Diagnostics Manual page 497

11.02
300720
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300721
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300722
Parameters:
Definitions:
 Siemens AG, 2002. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
Axis %1 drive %2 maximum motor speed invalid
%1 = NC axis number
%2 = Drive number
Because of the high maximum motor speed in the drive MD 1401:
$MD_MOTOR_MAX_SPEED and the speed controller cycle in MD 1001:
$MD_SPEEDCTRL_CYCLE_TIME sufficiently high speeds can occur to cause a format
overflow. Example: A motor speed of 480,000 rpm can still be processed without error at
a speed controller cycle time of 125 µs.
- NC not ready.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
Please inform the authorized personnel/service department. Reduce the maximum motor
speed MD 1401: $MD_MOTOR_MAX_SPEED (speed for the maximum useful motor
speed) or set a smaller speed controller cycle in MD 1001:
$MD_SPEEDCTRL_CYCLE_TIME (speed controller cycle).
Switch control OFF - ON.
Axis %1 drive %2 zero-load current greater than rated motor current
%1 = NC axis number
%2 = Drive number
The no-load current of the motor (MD 1136: $MD_MOTOR_NOLOAD_CURRENT) has
been set at a greater value than the rated current of the motor (MD 1103:
$MD_MOTOR_NOMINAL_CURRENT).
- NC not ready.
- Channel not ready.
- NC Stop on alarm.
- NC Start disable in this channel.
- The NC switches to follow-up mode.
- Alarm display.
- Interface signals are set.
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 machine data MD 1103:
$MD_MOTOR_NOMINAL_CURRENT (rated motor current) and MD 1136:
$MD_MOTOR_NOLOAD_CURRENT (motor no-load current).
Switch control OFF - ON.
Axis %1 drive %2 zero-load motor current greater than rated current of power sec-
tion
%1 = NC axis number
%2 = Drive number
On the basis of its no-load current (MD 1136: $MD_MOTOR_NOLOAD_CURRENT
(motor no-load current), the connected motor is too large for the power section in use
(continuous thermal current MD 1108: $MD_INVERTER_MAX_THERMAL_CORR (cur-
rent limit for power section).
1 Alarms
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