MICROMASTER 4 (MM4), SINAMICS G120: 冷却风扇如何运行？

QUESTION: MICROMASTER 4 和 SINAMICS G120 冷却风机的运行。 ANSWER: MM420 firmware 1.xx, MM430 firmware 2.xx & MM440 to firmware 2.06 不带选件板(encoder, Profibus, Devicenet, Canbus) 的变频器风机工作运行状态： 若变频器未安装选件模板， 冷却风机只在变频器 运行命令使能时运行，当变频器停机之后风机立即断电。 可以通过设置参数P0295，改变变频器停机之后，冷却风机延时断电的时间。 带选件板(encoder, Profibus, Devicenet, Canbus) 的变频器风机工作运行状态： 若变频器安装了选件模板， 当系统上电后，变频器的冷却风机立刻启动运行。 冷却风机的工作运行是由变频器内部软件设置的。因为增加了选件模板，变频器需要更大的散热量。 MM440 from firmware 2.08 不带选件板(encoder, Profibus, Devicenet, Canbus) 的变频器风机工作运行状态： 若变频器未安装选件模板，冷却风机只在变频器 运行命令使能时运行，当变频器停机之后风机立即断电。 可以通过设置参数P0295，改变变频器停机之后，冷却风机延时断电的时间。 带选件板(encoder, Profibus, Devicenet, Canbus) 的变频器风机工作运行状态： 对于A,B 尺寸的变频器，当系统上电后，变频器的冷却风机立刻启动运行。 对于C尺寸的变频器，冷却风机在变频器 运行命令使能时运行，当变频器停机之后风机立即断电。 可以通过设置参数P0295，改变变频器停机之后，冷却风机延时断电的时间。 SINAMICS G120 firmware 2.00 对于 G120, 选件模板已经集成在CU里，所以在冷却风机的控制上没有什么区别。 作为适用于所有尺寸变频器功率模块和控制模块的冷却理论（功率模块外部散热和电子元件的对流冷却）改良的应用结果， 冷却风机只在变频器 运行命令使能时运行。 可以通过设置参数P0295，改变变频器停机之后，冷却风机延时断电的时间。 Written by: A&D SD CST Keywords: MICROMASTER 4, SINAMICS G120, Fan 条目号:14399655 日期:2007-02-28 QUESTION: Behavior of the fan for MICROMASTER 4 and SINAMICS G120 ANSWER: MM420 firmware 1.xx, MM430 firmware 2.xx & MM440 to firmware 2.06 Behavior without optional modules (encoder, Profibus, Devicenet, Canbus): If an optional module is not installed in/at the drive inverter, the fan only starts to operate after an ON command and is again powered-down with the drive comes to a standstill. The power-down sequence can be delayed using parameter P0295. Behavior with optional modules (encoder, Profibus, Devicenet, Canbus): If an optional module is installed in/at the drive inverter, the fan immediately starts to operate after power supply ON. This behavior is controlled via the software. The reason for this is the higher cooling air requirement of the option. MM440 from firmware 2.08 Behavior without optional modules (encoder, Profibus, Devicenet, Canbus): If an optional module is not installed at/in the drive inverter, the fan only starts to operate after an ON command and is powered-down again when the drive comes to a standstill. The power-down sequence can be delayed using parameter P0295. Behavior with optional modules (encoder, Profibus, Devicenet, Canbus): For frame sizes A and B, the fan starts to operate immediately after power ON. Above frame size C, the fan only starts to operate after an ON command and is powered-down again when the drive is at a standstill. The power-down sequence can be delayed using parameter P0295. SINAMICS G120 firmware 2.00 For G120, modules are already integrated in the CU; this is the reason that in this case, there are no differences in the behavior of the fan control. As a result of the modified cooling concepts (external heatsinks at the power modules and convection cooling of the electronics) for all frame sizes, Power Modules, Control Units, the fan only operates after an ON command. The power-down sequence can be delayed using parameter P0295. Written by: A&D SD CST Keywords: MICROMASTER 4, SINAMICS G120, Fan Entry ID:14399655 Date:2007-01-29