Siemens SINAMICS G120D Operating Instructions Manual page 75

7.
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Technological use:
• [0]: In all applications that do not fall under [1] ... [3]
• [1]: Applications involving pumps and fans
• [2]: Applications with short ramp-up and ramp-down times.
However, this setting is not suitable for hoisting gear and
cranes/lifting gear.
• [3]: Setting only for steady-state operation with slow speed
changes. We recommend setting [1] if load surges in operation
cannot be ruled out.
Motor identification:
• [1]: Recommended setting for closed-loop speed control. After an
ON command, the inverter identifies the motor data – and with a
new ON command, optimizes the speed controller.
• [2]: After an ON command, the inverter identifies the motor data at
standstill. Recommended setting for the following cases:
– You have selected "Speed control" as control mode, however
the motor cannot freely rotate, e.g. for mechanically limited
traversing sections.
– You have set "V/f control" as control mode.
• [3]: This setting only makes sense after the motor identification [2].
The inverter optimizes the speed controller at the next ON
command.
• [11] or [12]: The setting is the same as [1] or [2], however with the
difference that after the motor identification, the inverter
immediately changes into the "Operation" state.
Calculating the motor parameters: Select "Complete calculation".
Commissioning
5.4 Basic commissioning with a PC
75