Siemens SIMOTICS T-1FW3 User Manual

Technical data and characteristics
6.2 Slot ripple and accuracy
1FW3 complete torque motors
Configuration Manual, 08/2020, A5E46027705B AA
161
Speed limits n
max Inv
The maximum permissible speed is limited by the mechanical speed limit n
max mech
(centrifugal forces at the rotor, bearing service life) or the electrical limit speed
n
max Inv
.
NOTICE
Converter destroyed due to overvoltage
When the machine is operational (when motoring or separately driven) at speeds higher
than
n
max Inv
, a voltage can be induced in the winding that exceeds the maximum
permissible converter voltage. This can cause irreparable damage to the converter.
• Operation is not permissible above the speed
n
max Inv
without protective measures or
other additional measures. Siemens AG accepts no liability for any damage occurring as
a result of failing to observe the danger warning.
Converter type
Max. permissible voltage at the converter U
Perm Inv
SINAMICS S120, 3AC 380-480 V
820 V
The following formula can be used to determine the maximum permissible speed n
max Inv
up
to which the system can be operated without restrictions.
n
max Inv
in rpm
U
Perm Inv
in V
k
E
in V/1000 rpm, k
E
= voltage constant (see Chapter "Data sheets and characteristics
(Page 162)").
The SINAMICS S120 drive system calculates this value automatically.
When the converter is functioning properly, the voltage that occurs at the motor terminals in
field-weakening mode can be limited by generating a voltage in phase opposition to the
induced voltage.
6.2 Slot ripple and accuracy
The values in the table "slot ripple and accuracy" apply under the following conditions:
● Synchronous motor on SINAMICS S with servo control
● Type of construction: booksize or chassis
● Default setting: Pulse frequency 4 kHz or 2 kHz
● Torque control

Siemens SIMOTICS T-1FW3 Specifications

General

Brand	Siemens
Model	SIMOTICS T-1FW3
Category	Engine
Language	English