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速度控制器将速度设定值和实际值进行比较，如果这二者有偏差，它就把一个相应的电流设定值加到电流控制器（工作原理：通过从属的电流控制器进行闭环速度控制）。 该速度控制器是一个 PI 控制器带一个可选的 D 部件。 也可参数化一个可开关的速度下降。所有的控制器特征可相互独立地设定。 可以采用 Kp (增益) 的值作为一个连接器信号（外部的或内部的）的函数。

速度控制器的 P 增益可以被用作实际速度、实际电流、设定值／实际值偏差或绕组直径的一个函数。为了在速度控制回路中获得较好的动态响应，可以加上一个前馈控制功能。为此目的，在速度控制器之后，可以加上作为摩擦或驱动的运动惯性的一个函数的转矩设定值量。在一次自动优化运行过程里可以计算出摩擦和运动惯性的补偿值。

直接紧随着激活之后的速度控制器的输出量可以通过一个参数来设置。

可以旁路速度控制器，并且变频器在转矩或电流控制下运行，具体取决于参数是如何设置的。在运行中，利用选择功能“主／从切换”是有可能在闭环速度控制和闭环转矩控制之间切换的。通过一个二进制可分配的功能端子或一个串行接口，可以如同选择一个开关量连接器一样地选择该功能。转矩设定值利用一个可选择的连接器加用，转矩设定值可以用一个模拟可分配的功能端子或一个串行接口来提供。

在“从驱动”运行（在转矩或电流控制之下），一个限制控制器在起作用。为了防止驱动被加速到太快，限制控制器可以在一个可调节的，参数化的速度限制值的基础上进行干涉。在这种情况下，驱动被限制到一个可调节的速度偏差内

Access MyBackup is an interface for Product Partner SINUMERIKsystems, enabling them to offer their own products in the field ofarchiving systems on this basis. The certified SINUMERIK SystemProduct Partners are the companies Auvesy and MDT Software.

More efficient production through intelligent ITintegration

Siemens makes the complete range of IT integration available as anexpansion of its CNC technology SINUMERIK 840Dsl. This increasesproductivity in service and production, and expands the automationof the production. Machines communicate with higher-level controlsystems, and simply have to be expanded by new functionality. Onthe way toward the digital factory, the SINUMERIK Integrateplatform offers productive solutions for integrating IT intoproduction facilities.

There is potential for increasing the productivity of CNCmanufacture by networking machines and plants. This requiresproduction data to be collected and evaluated transparently.Siemens offers SINUMERIK Integrate as a central platform, thatprovides useful modules for analyzing and managing data forindividual machines and networked plants.

Future-proof investment in scalable software

Investment protection and future security with SINUMERIKIntegrate

A typical production environment lasts for several years or evendecades. In this time, the IT infrastructure is subject tocontinual change, whereas the machines remain virtually unchanged.At the same time, new requirements frequently arise, that can bemet by expanding the software functionality – if possible withoutchanging the machine-related software. The SINUMERIK Integrateplatform enables resources to be networked and processes andproduction data to be centralized. The security of the data isensured from end to end. On the one hand by encrypted datatransport and, on the other hand, because the machines can beoperated with completely isolated firewalls.