Siemens SINUMERIK 840Di Diagnostic Manual page 757

11/2006
300780 Axis %1 drive %2 zero load current > rated motor current
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: 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).
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: 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.
Channel not ready.
Remedy: Please inform authorized personnel / the service department.
- For standard motors: Execute a general drive reset (delete the boot file) and repeat the startup.
- For non-Siemens motors: Check and, if necessary, refer to the motor data sheet to correct machine
data MD 1103: $MD_MOTOR_NOMINAL_CURRENT (nominal motor current) and MD 1136:
$MD_MOTOR_NOLOAD_CURRENT (motor no-load current).
Program Clear alarm with the RESET key in all channels. Restart part program.
Continuation:
300781 Axis %1 drive %2 zero load current > rated current of power section
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: 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_CURR (current limit for power section).
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: 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.
Channel not ready.
Remedy: Please inform the authorized personnel/service department.
1. Reset the drive (delete the bootfile) and repeat the startup.
2. Check the configuration and install a suitable power section for the motor. Repeat the startup.
Program Clear alarm with the RESET key in all channels. Restart part program.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
SIMODRIVE alarms
2-757