PM250* Power Modules (With Class A Integrated Line Filter): See Page 72
*) The PM250 Power Module features an absolutely unique technology which we have called “Efficient Infeed Technology”. The innovative circuit design used in Efficient Infeed Technology reduces supply harmonics. There is no need to use an optional line reactor at the supply infeed. This saves space and costs for engineering and procurement.
The PM250 Power Module is also suitable for safety-oriented applications. In conjunction with a Fail-safe Control Unit, the drive can be turned into a Safety Integrated Drive (see Control Units). The permissible cable lengths between inverter and motor are limited. Longer cables can be used if output reactors are connected (see load-side power components).
For frame size FSC of Power Module PM250 with an integral line filter of class A, an additional base filter of class B is available for achieving class B (see line-side power components). The PM250 Power Modules with integrated class A line filter are suitable for connection to TN supply systems.
PM260* Power Modules (Without Integrated Line Filter & With Class A Integrated Line Filter): See Page 84
*) The PM260 Power Module features an absolutely unique technology which we have called “Efficient Infeed Technology”. The regenerative feedback capability of the PM260 Power Module in generating mode (electronic braking) means that energy is returned so the supply system and not destroyed in a braking resistor. This saves space in the control cabinet. The time-consuming dimensioning of the braking resistor as well as the wiring are eliminated. Generated heat is also reduced in the control cabinet.
The innovative circuit design used in Efficient Infeed Technology reduces supply harmonics. There is no need to use an optional line reactor at the supply infeed. This saves space and costs for engineering and procurement.
The PM260 Power Modules are also characterized by a higher rated pulse frequency combined with outstanding efficiency and an integral sine-wave filter. The integral sine-wave filter ensures
that the inverter output current is sinusoidal and supports cable lengths of up to 200 m shielded and 300 m unshielded. An output reactor is therefore not required. Furthermore, lower bearing
currents and voltage stress are generated, which reduces stress on the motor.
The incorporation of SiC free-wheeling diodes – an absolutely unique innovation – makes the PM260 Power Module extremely compact. It is also highly resistant to thermal loading and runs
very quietly thanks to its high pulse frequencies. Standard motors can be used in conjunction with the PM260 Power Module. An increased dielectric strength of the winding system is not required.
The PM260 Power Module is suitable for safety-oriented applications. In conjunction with a Fail-safe Control Unit, the drive can be turned into a Safety Integrated Drive (see Control Units).
The PM260 Power Modules with integrated class A line filter are suitable for connection to TN supply systems. Power Modules without integrated line filter can be connected to grounded (TN,TT) and non-grounded (IT) supply systems
Modularity
SINAMICS G120 is a modular converter system comprising a variety of functional units. The two main units are
The Control Unit controls and monitors the Power Module and the connected motor in several different modes. It supports communication with a local or central controller and monitoring devices. The Power Module supplies the motor in the power range 0.37 kW to 132 kW (0.5 hp to 200 hp). The Power Module is controlled by a microprocessor in the Control Unit. It features state of-the-art IGBT technology with pulse-width-modulated motor voltage. It also features a range of protective functions offering a high degree of protection for the Power Module and motor.
Furthermore, a large number of additional components is available, such as:Safety Integrated
The SINAMICS G120 inverter chassis units are available in a number of different variants for safety-oriented applications. All Power Modules are already designed for Safety Integrated. A Safety Integrated Drive can be created by combining a Power Module with the relevant Fail-safe Control Unit.
The SINAMICS G120 fail-safe frequency inverter provides four safety functions, certified in accordance with EN 954-1 Category 3 and IEC 61508 SIL 2:
Efficient Infeed Technology
The advanced Efficient Infeed Technology is employed in PM250 and PM260 Power Modules. This technology allows the energy produced by motors operating in generator mode on standard inverters to be fed back into the supply system. The control cabinet can be designed even more compactly thanks to the omission of extra cooling equipment and components such as braking resistors, brake choppers and line reactors. The time and expense involved in planning and wiring the system are significantly reduced. At the same time, considerable savings can be achieved in terms of energy consumption and operating costs.
Innovative cooling concept and paint finish of electronic modules
The new cooling system and the paint finish for the electronic modules significantly increase the service life or useful life of the device. These features are based on the following principles:
STARTER commissioning tool
The STARTER commissioning tool supports the commissioning and maintenance of SINAMICS G120 inverters. The operator guidance combined with comprehensive, user-friendly functions for the relevant drive solution allows you to commission the device quickly and easily.
The new SINAMICS G120D distributed frequency inverter series is the solution for demanding drive tasks especially in the field of conveyor systems. SINAMICS G120D supports bump-free, closed-loop speed control of three-phase asynchronous motors and fulfills all the requirements of conveyor system applications from simple frequency control through to demanding vector control. With its well-thought-out modular type of construction to the IP65 degree of protection (tested to UL50 type 3), it is seamlessly integrated into the plant and supports a high plant availability and minimizes spare parts inventories. The innovative power module concept with regenerative feedback capability helps to save energy. Safety functions that are unique worldwide support enhanced plant concepts with increased productivity. This drive can be optimally integrated into the Siemens TIA world of automation via PROFIBUS or PROFINET. With different device versions (frame sizes FSA to FSC) in an output range of 0.75 kW to 7.5 kW (1.0 hp to 10 hp), it is suitable for a wide variety of drive solutions.
Safety Integrated
The SINAMICS G120D distributed frequency inverters are available in a number of different variants for safety-oriented applications. All Power Modules are already designed for Safety Integrated. A Safety Integrated Drive can be created by combining a Power Module with the relevant Fail-safe Control Unit.
The SINAMICS G120D fail-safe frequency inverter provides three safety functions, certified in accordance with EN 954-1, Category 3 and IEC 61508 SIL 2:
Efficient Infeed Technology
The advanced Efficient Infeed Technology is employed in PM250D Power Modules. This technology allows the energy produced by motors operating in generator mode on standard inverters to be fed back into the supply system. At the same time, considerable savings can be achieved in terms of energy consumption and operating costs.
STARTER commissioning tool
The STARTER commissioning tool (STARTER Version 4.1, SP1 and higher) supports the commissioning and maintenance of SINAMICS G120D inverters. The operator guidance combined with comprehensive, user-friendly functions for the relevant drive solution allow you to commission the device quickly and easily.
Click here to download the Distributed I/O Section of IK PI 2009 Catalog
The frequency converter is completely integrated into the ET 200S system and offers all system advantages, such as high availability thanks to the hot swapping function, modular expansion, or reduction of the wiring overhead resulting from the self-assembling terminal module wiring.
Both the "Safe Stop 1" function and the "Safely Limited Speed" function operate without motor sensor or encoder; the implementation cost is minimal. Existing systems in particular can be retrofitted with safety technology without the motor or mechanics having to be modified.
The "Safely Limited Speed" and "Safe Stop 1" safety functions are certified for asynchronous motors without sensors – these safety functions are not approved for drawing loads such as lifting devices and unwinders.