Siemens CU240B-2 - Page 153

Commissioning
5.4 Quick commissioning with a PC.
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
153
Selecting a suitable application class
When selecting an application class, the inverter assigns the appropriate settings to the
motor control.
Application class
Standard Drive Control
Dynamic Drive Control
Motors that can
be operated
Induction motors Induction and synchronous motors
Power Modules
that can be op-
erated
PM240, PM240-2, PM340
Application ex-
amples
• Pumps, fans, and compressors with flow
characteristic
• Wet or dry blasting technology
• Mills, mixers, kneaders, crushers, agitators
• Horizontal conveyor technology (conveyor
belts, roller conveyors, chain conveyors)
• Basic spindles
• Pumps and compressors with displacement ma-
chines
• Rotary furnaces
• Extruder
• Centrifuge
Properties
• Typical correction time after a speed
change: 100 ms … 200 ms
• Typical correc-
tion time after a
load surge:
500 ms
• Standard Drive
Control is suita-
ble for the follow-
ing requirements:
– Motor power
ratings
< 45 kW
– Acceleration time 0 → rated speed (de-
pending on the rated motor power):
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 inaccurate motor data settings
• Typical correction time after a speed change:
< 100 ms
• Typical correction 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 rat-
ed 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).
Max. output
frequency
550 Hz 240 Hz
Torque control
Without torque control
Speed control with lower-level torque control
Commissioning
• Cont
rary to "Dynamic Drive Control" a speed
controller does not have to be set
• In comparison to "Configuration for experts":
– Simplified commissioning using preas-
signed motor data
– Reduced number of parameters
• Reduced number of parameters when compared
to "Configuration for experts"