Selecting An Application Class - Siemens SINAMICS G120XA Operating Instructions Manual

5.4.4

Selecting an application class

Application class
Properties
● Typical settling time after a speed change:
100 ms ... 200 ms
● Typical settling time after a load surge: 500 ms
● Standard Drive Control is suitable for the
following requirements:
–
–
–
● Standard Drive Control is insensitive with
respect to imprecise setting of the motor data
Application ex‐
● Pumps, fans, and compressors with flow
amples
characteristic
Motors that can
be operated
Max. output fre‐
quency
Torque control
Commissioning
● Unlike "Dynamic Drive Control," no speed
controller needs to be set
● Compared with the "EXPERT" setting:
–
–
● Standard Drive Control is preset for converters
of frame size A ... frame size C
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Standard Drive Control
Motor power ratings < 45 kW
Ramp-up time 0 → rated speed (depending
on the motor power rating):
1 s (0.1 kW) ... 10 s (45 kW)
Applications with steady load torque without
load surges
Induction motors
550 Hz
Without torque control
Simplified commissioning using predefined
motor data
Reduced number of parameters
5.4 Quick commissioning using the BOP-2 operator panel
● Typical settling time after a speed change:
< 100 ms
● Typical settling time after a load surge: 200 ms
● Dynamic Drive Control controls and limits the
motor torque
● Torque accuracy that can be achieved: ± 5% for
15% ... 100% of the rated speed
● We recommend Dynamic Drive Control for the
following applications:
– Motor power ratings > 11 kW
– For load surges of 10% ... >100% of the
rated motor torque
● Dynamic Drive Control is necessary for a ramp-
up time 0 → rated speed (dependent on the rated
motor power): < 1 s (0.1 kW) ... < 10 s (132 kW).
● Pumps and compressors with displacement
machines
Induction and synchronous motors
Speed control with lower-level torque control
● Fewer parameters compared with the
"EXPERT" setting
● Dynamic Drive Control is preset for converters
of frame size D ... frame size F
Commissioning
Dynamic Drive Control
240 Hz
113