Siemens SINAMICS G120 Operating Instructions Manual page 139
Low voltage inverters
built-in units with cu250s-2 control units and
encoder evaluation
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Also See for SINAMICS G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
Table of Contents
Application
Standard Drive Control
class
Properties of
● Typical correction time after a
the closed-
speed change: 100 ms ... 200 ms
loop speed
● Typical settling time after a load
control
surge: 500 ms
● "Standard Drive Control" is
suitable to address the following
requirements:
–
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 increasing
load torque without load surges
● "Standard Drive Control" is
insensitive with respect to
imprecise setting of the motor data
Application
● Pumps, fans and compressors with
examples
flow characteristic
● Wet or dry blasting technology
● Mills, mixers, kneaders, crushers,
agitators
● Horizontal conveyor technology
(conveyor belts, roller conveyors,
chain conveyors)
● Basic spindles
Motors that
can be oper‐
ated
Power Mod‐
ules that can
be operated
Max. output
frequency
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG
Induction motors
550 Hz
Dynamic Drive Control
without encoder
● 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
● We recommend "Dynamic Drive Control" for the following
applications:
–
Motor power ratings > 11 kW
–
For load surges 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 (250 kW).
● Torque accuracy that can be
achieved: ± 5% for 15% ...
100% of the rated speed
● Pumps and compressors with displacement machines
● Rotary furnaces
● Extruder
● Centrifuges
Induction and synchronous motors
PM240-2
Commissioning
5.4 Quick commissioning with a PC
Dynamic Drive Control
with encoder
● The control extends the
torque accuracy of ± 5 % to
speeds < 15 % of the rated
speed.
240 Hz
137
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