SINAMICS G120 Chassis Units

Offer a Comprehensive Range of Power Modules for All Drives Applications

Power Modules PM240

PM240 Power Modules have an integrated braking chopper. Loads can dynamically braked using an external braking resistor (as option available). The DC link has a adequate DC link capacitance, this means that with the PM240 Power Module a sufficient control range is available to control the DC link voltage. This allows certain applications to be easily implemented. These applications include, for example, kinetic buffering or using the kinetic energy of the load to implement a controlled stop when the power fails.

Power Modules PM250 and PM260

The PM250 and PM260 Power Modules extend the modular range of SINAMICS G120 products and in conjunction with the Control Units CUs (all Control Units can be combined with the PM250 and PM260).

Power Module PM250 will be introduced for the following voltage:

3-ph. 380-480V AC ±10%

Power Module PM260 will be launched for the following voltage:

3-ph. 660-690V AC ±10%

As a result of the innovative circuit concept, the kinetic energy of a load can be fed back into the line supply. With its regenerative feedback capability (energy recovery) the PM250 power module series offers enormous energy-saving potential and contrary to the PM240 Power Module the regenerative energy is no longer converted into heat in a braking resistor. The PM260 Power Module series further distinguishes itself as a result of a higher standard clock frequency and an integrated sinusoidal output filter.

Benefits of the PM250 in Comparison to PM240

Benefits for the OEM:

1.	As a result of the regenerative feedback capability of the Power Module in the regenerative mode (electronic braking) energy is fed back into the line supply – and is no longer wasted in a braking resistor. This saves space and also eliminates the tedious dimensioning of the braking resistor as well as the wiring. Further, it also reduces the amount of heat in the electrical cabinet (lower temp. rise).
2.	It is no longer necessary to tediously dimension and connect-up the DC link coupling.
3.	This innovative circuit ensures that fewer harmonics are fed back into the line supply. It is no longer necessary to use an optional reactor at the line supply input. This saves space for the panel builder and costs when engineering and purchasing the components.

Benefits for end users:

1.	The regenerative feedback capability of the Power Module offers customers enormous energy-saving potential. The energy generated in regenerative operation is fed back into the line supply.
2.	The customer neither has to pay for braking resistors nor line reactors.

Additional Benefits of the PM260

Benefits for the OEM:

1.	The PM260 has an integrated sinusoidal filter. This saves the panel builder the mounting/installation and wiring of an optional sinusoidal filter and therefore space and wiring costs.

Benefits for end customers:

1.	The integrated sinusoidal output filter ensures a clean sinusoidal current at the drive converter output and allows power cable lengths of up to 200 m shielded and 300m non-shielded. Further, lower bearing currents occur – this reduces the stress on the motor.
2.	The standard 16 kHz clock cycle frequency ensures low-noise operation.
3.	The innovative SiC semiconductor technology ensure that the drive converter, with the same power rating, is more compact than a comparable standard drive converter with optional sinusoidal filter.