Motor Overload Protection According To Iec/Ul 61800-5-1 - Siemens SINAMICS S120 Function Manual

The motor temperatures are calculated based on the motor measured values. The calculated
temperatures are indicated in the parameters:
● r0034 motor utilization thermal
● p0610 motor overtemperature response
● p0613 motor temperature model ambient temperature
● r0631 Motor temperature model stator iron temperature
● r0632 Motor temperature model stator winding temperature
● r0633 Motor temperature model rotor temperature
● r5387 motor temperature model 3 timer
● p5388 motor temperature current reduction inhibit
● p5389 motor temperature status word faults / alarms
Table 10-2
Parameter:
10.2.1.4

Motor overload protection according to IEC/UL 61800-5-1

Overview
The thermal motor models described comply with the motor overload protection according to
IEC/UL 61800-5-1. For Siemens motors from the database, the parameters are set
automatically for the corresponding motor model. For third-party motors on the other hand, a
standard motor data set is created, which may have to be adapted to guarantee conformity with
the motor overload protection.
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Important settings
Explanation:
p5390 Alarm threshold
If the model motor temperature (r0632) exceeds the alarm threshold, alarm A07012
"Drive: Motor temperature model 1/3 overtemperature" is output
p5391 Fault threshold
If the model motor temperature (r0632) exceeds the fault threshold, fault F07011
"Drive: Motor overtemperature" is output.
p5350 Boost factor
Defines the boost factor for the copper losses at standstill.
Monitoring functions and protective functions
10.2 Thermal motor protection
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