Siemens SIMOTICS S-1FK2 Configuration Manual

You can 󹪝nd additional information in Chapter "Con󹪝guration (Page 65)".
NOTICE
Motor damage due to overheating
Continuous operation in the area above the S1 characteristic results in motor overheating and
subsequent damage.
• Operate the motor within the values of the S1 characteristic.
M
max
characteristic
The M
max
characteristic ② de󹪝nes the operating range for transient overloads.
M
max inv
characteristic
The M
max inv
characteristic ③ limits the possible overload range in combination with a speci󹪝c
maximum converter current. The M
max inv
characteristic takes 󹪝eld weakening into consideration.
n
max inv
line
The mechanical variables of the motor and the properties of the converter limit the speed range
of the motor. The n
max inv
line ④ limits the maximum permitted speed of the motor in a drive
system with SINAMICS S120.
NOTICE
Damage to the converter due to excessively high speeds
A motor speed higher than n
max inv
can result in a voltage being induced in the winding that
exceeds the maximum permissible voltage at the converter. This induced voltage can destroy
the converter.
• Operate the motor at speeds below n
max inv
.
Voltage limit characteristic curve
Field weakening starts from the voltage limit characteristic ⑤.
As the speed increases, an increasing percentage of the current is used for 󹪝eld weakening, and
therefore no longer generates a torque. This is the reason that the M
max
characteristic and the S1
characteristic have a steep downward gradient in the 󹪝eld weakening range.
Converter output voltages
Every speed-torque diagram includes di󹪜erent characteristics for di󹪜erent converter output
voltages.
Drive system Infeed module Line voltage DC link voltage Output volt‐
age
V
line
V
DC LINK
V
mot
SINAMICS S120
3 AC 380 - 480 V
ALM
ALM
BLM/SLM
BLM/SLM
400 V
480 V
400 V
480 V
600 V
720 V
540 V
650 V
425 V
510 V
380 V
460 V
Technical data and characteristics
6.1 Explanations
1FK2 Synchronous Motors for SINAMICS S120
82 Con󹪝guration Manual, 02/2022, A5E46927724B AD

Siemens SIMOTICS S-1FK2 Specifications

General

Brand	Siemens
Model	SIMOTICS S-1FK2
Category	Engine
Language	English