Siemens SIMODRIVE 611 universal Function Manual page 691

01.99 04.05
781 No-load current, motor \%d > rated power section cur-
rent
Cause The motor no-load current (P1136) has been set to higher values than
the rated power section current.
before SW 2.4 the following is valid: Rated power section current =
P1111
from SW 2.4 the following is valid: Rated power section current = P1111
* P1099
Remedy – Enter the valid current for the motor used in P1136.
Third-party motor:
The required currents should be determined using a motor data sheet.
Siemens motor:
The currents are determined using the motor code (P1102).
– Reduce the power section pulse frequency P1100.
– Use a higher-rating power section (re-commission).
Acknowledgement RESET FAULT MEMORY
Stop response STOP II (SRM, SLM) STOP I (ARM)
782 Reactance motor \%d invalid
Cause The stator leakage reactance (P1139) or the rotor leakage reactance
(P1140) or the magnetizing reactance (P1141) of the motor is incorrect
(less than/equal to zero).
Remedy Determine the stator, rotor leakage reactance and magnetizing reac-
tance of the motor used and enter in P1139, P1140 and P1141.
Third-party motor:
The values should be determined from a motor data sheet.
Siemens motor:
The values are determined from the motor code (P1102).
Acknowledgement RESET FAULT MEMORY
Stop response STOP II (SRM, SLM) STOP I (ARM)
783 Rotor resistance, motor \%d invalid
Cause The rotor resistance (P1138, cold) of the motor is zero or there was a
format overflow for an internal conversion.
Remedy The following parameters can have incorrect values:
P1001 (speed controller cycle)
P1134 (rated motor frequency)
P1138 (rotor resistance)
P1139 (leakage stator reactance)
P1140 (leakage rotor reactance)
P1141 (magnetizing field reactance)
Check the parameter, and if required, correct using the motor data
sheet.
The following condition must be fulfilled:
16 * P1001 * 0.00003125 * P1138 * 2PI * P1134 / (P1140 + P1141) < 1
Acknowledgement RESET FAULT MEMORY
Stop response STOP II (SRM, SLM) STOP I (ARM)
E Siemens AG 2005 All Rights Reserved
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
7 Fault Handling/Diagnostics
7.3 List of faults and warnings
7
7-691