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| 2/11/2011 8:41 AM | |
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Posts: 288 Rating:
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hello dear all. what is difference between e/r u/e n/e infeed modules?(in aspect of operation) thanks. |
| 2/11/2011 9:44 AM | |
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Posts: 2964 Rating:
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Hello.... The infeed modules I/R or E/R are used to connect the drive group to the line supply.The infeed/regenerative feedback module (I/R module) and the module for theunregulated infeed (UI module) are used to input power into the DC link. Further,the I/R, UI, and the monitoring module also provide the electronics powersupply for the connected modules. The infeed modules do not have any comprehensive overload protection. Suchoverload protection must be provided by the configuration and correct setting ofthe current values in the control boards. For the Ue module, when the motor brakes, the drive energy injected into the DClink is converted into heat in the braking resistors and dissipated to the environment.These braking resistors are either integrated or mounted. When required,one or more additional pulsed resistor modules (PR modules) can be usedwithin the limits specified when engineering the system. This module is used for the following applications: _ Machines with few or short braking cycles, low braking energy _ Drive groups with limited dynamic demands, in particular for the main spindle drive I/R modules and HF/HFD commutating reactors form the step–up converter(7 kHz) for controlling the DC link voltage and enabling a regenerative feedback. This module is used for the following applications: _ Machines with high dynamic requirements placed on the drives_ Frequent braking cycles and high braking energy _ Control cabinet designs optimized for low operating costs NoteThe HFD reactor is required for the function of the I/R modules, because this iscyclically short–circuited for the step–up converter voltage control function! Link attached for futher more information.... |
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