Hi graeme,

I wanna do crane application for multiple motor and 1 drive sinamics g120.

Can you share parameter configuration for me?

My drive is g120 pm240e-2

Thank you

Graeme

 Hi, please see this FAQ

There are as ever various caveats here

In short though, yes there generally is no problem with what you are proposing.

Vector control is not necessarily prohibited as long as the motors are mechanically coupled (which in a crane rail gantry they technically will be) as one motor could be deemed as the master with the encoder and the remainder operate on a slip-based torque

however, V/F mode is far more forgiving and is probably the way I would do it.

ABSOLUTES:

The Sum of the Current ratings of all the motors must be less than the drive rating - Obviously

The total cable length of all segments (Summed) must not exceed the maximum recommended lengths quoted in the PMxxx manual for the G120.

Each motor MUST be individually protected both for Overload and temperature

All "Selected" motors must be started at the same time (Some installations use sets of motors in which case, motor data sets would be required) The selection is made before starting and must not be changed during operation.

The rating of the braking resistor will need careful selection.

Motor ID is not required/will probably fail anyway.

Regards,

Graeme

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Split from G120 for gantry crane application.