Siemens SINUMERIK 840D Series Diagnostics Manual page 526

1 Alarms
Definitions:
Reactions:
Remedy:
Program Continuation:
300784
Parameters:
Definitions:
Reactions:
1-526
The value in drive MD 1138: $MD_ROTOR_COLD_RESISTANCE (cold rotor resistance)
is less than or equal to zero or a format overflow has occurred.
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
- NC not ready.
- Channel 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: One of the following machine data may contain an invalid value:
• Modify MD 1001: $MD_SPEEDCTRL_CYCLE_TIME (speed controller cycle)
• Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENZY (rated motor frequency)
• Modify MD 1138: $MD_ROTOR_COLD_RESISTANCE (cold rotor resistance)
• Modify MD 1139: $MD_STATOR_LEAKAGE_REACTANCE (stator leakage reactance)
• Modify MD 1140: $MD_ROTOR_LEAKAGE_REACTANCE (rotor leakage reactance)
• Modify MD 1141: $MD_MAGNETIZING_REACTANCE (magnetizing reactance)
Fulfill the condition according to the following formula:
16 * MD1001 * 0.00003125 * MD1138 * 2PI * MD1134 / (MD1140 + MD1141) < 1
Call the SIEMENS AG, SIMODRIVE Hotline.
Clear alarm with the RESET key in all channels. Restart part program.
Axis %1 drive %2 zero load voltage invalid
%1 = NC axis number
%2 = Drive number
Error in the no-load voltage (MD 1135):
• MD 1135 <= 0 or
• MD 1135 > MD 1132 or
• MD 1135 x MD 1142/MD 1400 + Uvor > 450V.
• Where
• Uvor = 0.181 x MD 1136 x MD 1142 x MD 1119
• Modify MD 1135: $MD_MOTOR_NOLOAD_VOLTAGE (motor no-load voltage)
• Modify MD 1132: $MD_MOTOR_NOMINAL_VOLTAGE (rated motor voltage)
• Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed)
• Modify MD 1142: $MD_FIELD_WEAKENING_SPEED (threshold speed for field weak-
ening)
• Modify MD 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current)
• Modify MD 1119: $MD_SERIES_INDUCTANCE (series reactor inductance)
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY
(channel not ready).
- NC not ready.
- Channel 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.
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA) – 11.02 Edition
 Siemens AG, 2002. All rights reserved
11.02