Siemens 6SL3120-2TE15-0AD0

The boss of the wire drawing machine experienced an emergency stop and the pipe burst. The old component bus pump was raised to a voltage of 800 volts. In Quanzhou Xin Yuan Technology, they replaced the Siemens 6SL3120-2TE15-0AD0 with a brand new board. The built-in braking chopping hard clamp was reduced to a voltage of 600 volts, ensuring no loss of operation even in the event of grid fluctuations.

Exclusive Features

As the Sinamics S120 dual-axis motor module, the core distinguishing feature of the Sinamics 6SL3120-2TE15-0AD0 lies in its independent DC bus design without the need for an additional power supply module. Under high dynamic acceleration and deceleration conditions in the workshop, its built-in braking chopper can directly handle the pump-up energy, eliminating the cumbersome wiring of external braking resistors. Its current closed-loop response time is reduced to the microsecond level, combined with the Drive-CLiQ interface, the communication delay between the rectifier unit and the control unit is extremely low. In extremely low-speed heavy-load unwinding scenarios, ordinary single-axis modules are prone to torque pulsation, while this dual-axis module, with its internal cross-coupling control algorithm, realizes the internal circulation utilization of energy between the two axes, converting mechanical energy losses into driving energy. The hardware-level suppression of the risk of DC bus overvoltage is achieved.

Practical Application

On the cold rolling and drawing production line, the practical advantages of this module are fully exploited. In the old frequency converter, when starting at 0.5Hz, the current loop saturation often led to wire breakage and machine shutdown; after replacing with this module, the parameter self-optimization function shortened the current loop response time by nearly half, and the low-speed full-load data direct pulling increased by 150%, with no pulling tension jolts during start-up. In the emergency stop condition of full-load reeling, the module's DC bus voltage often soared above 800V, causing tube explosion, while the Sinamics 6SL3120-2TE15-0AD0's DC bus voltage closed-loop effectively clamped the pump-up voltage within the safe threshold of 620V, reducing the overvoltage trip by more than 90% compared to the old model, and the equipment operated continuously at high load for three shifts without any alarms.

Thoughtful Assurance

The pain points in industrial sites often lie in the wiring terminals and debugging software. This module has done a lot of reductions in these two aspects. The terminal block adopts spring compression technology, allowing for the hard-wired connection of 24V digital and analog quantities with one hand, completely eliminating the risk of screw loosening and arc discharge in the strong vibration environment of the workshop. At the debugging level, it is deeply integrated into TIA Portal and STARTER, with built-in oscilloscope functions that can capture the motor phase current and torque waveforms in real time, without the need for an external hardware analyzer to determine encoder interference or flux abnormalities. The large-area heat dissipation teeth on the front of the module, combined with the fanless design, prevents overheating and machine shutdown caused by metal dust blockage, and daily maintenance only requires compressed air blowing, reducing the single maintenance time to within 5 minutes.

Expert Team

Behind the Sinamics 6SL3120-2TE15-0AD0 module is not only the underlying algorithm logic of Siemens, but also a local senior transmission engineer team providing round-the-clock practical support. In the transformation of large-scale continuous casting machines or multi-color printing machines, which have strict requirements for phase synchronization, the engineering team can provide smooth migration solutions from G120 to S120 and Drive-CLiQ topology reconstruction services based on the operating data of the equipment. For customized process sections of non-standard automation OEMs, the team can read and write messages on-site in the workshop, optimize the Bode diagrams of the speed loop and position loop, ensuring the dynamic follow-up error control within the micrometer level when multiple axes are linked. This technical loop that deeply binds the original factory's hard-core hardware with local practical debugging constitutes the ultimate defense line for the stable operation of the production line.