西门子全新Braumat过程控制系统亮相2019国际啤酒、酿酒设备及饮料设备技术展
11月12日,2019国际啤酒、酿酒设备及饮料设备技术展(BrauBeviale 2019)于德国纽伦堡开幕,西门子展出了适用于啤酒行业的全新版过程控制系统——Braumat V8.0。该系统基于Simatic S7-1500控制器,在报表系统、称重系统和安全性能方面都做出了显著优化。已安装的Simatic S7-400控制器可与其同时运行,现有的Braumat系统也可使用Simatic S7-1500控制器进行扩展或升级改造,避免产线停工。
经过 ATEX/IECEx 认证的电机过载保护
运行环境温度
请注意,SIRIUS 3RW 软起动器经过认证,适合在 -25 °C 到 +60 °C 温度范围内运行。
对于**出 40 °C 的环境温度,请考虑降低软起动器的额定工作电流。
更多信息,请见相应软起动器的手册以及技术数据。
脱扣等级(电子过载保护)
确保电机和电缆适合所选的脱扣等级。
软起动器的额定数据是正常起动情况下的数据 (CLASS 10)。对于重载起动 (> CLASS 10),由于只能设置低于软起动器额定电流的额定电机电流,可能需要提高软起动器的规格。
短路保护
SIRIUS 3RW 软起动器没有短路保护功能。确保提供短路保护。
线路保护
通过选择正确的电缆截面积规格,避免电缆表面出现不允许的高温。
选择足够大的导体截面积。
电机起动器保护装置上的线路接触器或附加欠压脱扣器
在很多 ATEX/IECEx 应用中,*在电机起动器配置方面采取附加措施(如使用线路接触器)。
但要注意,根据输入电压大小以及电机连接类型(内联电路或内三角电路),如果未采取下面所列的两种补救措施之一,那么所选起动器的动作会导致根据 ATEX/IECEx 认证的电机过载保护功能丧失。在此情况下,请使用:
•主电路中使用一个附加线路接触器
•含有电机起动器保护装置的电机起动器配置中使用一个附加欠压脱扣器
将线路接触器或欠压脱扣器连接到所选软起动器的故障输出 95、96 和 98。
对于 ATEX/IECEx 应用,请注意相应软起动器的手册中有关 ATEX/IECEx 的章节中提供的参数设置和调试信息。
订货号编排方式
产品型号
设备类型
高性能型软起动器
3RW55
3RW44
❒
❒
–
❒
❒
❒
❒
❒
–
❒
❒
❒
❒
一般性能型软起动器
3RW52
❒
❒
–
❒
❒
❒
❒
❒
–
❒
❒
❒
❒
基本性能型软起动器
3RW40
3RW30
❒
❒
–
❒
❒
❒
❒
❒
–
❒
❒
❒
❒
尺寸/额定工作电流 Ie
例如,在规格 S1 中,15 = 25 A
❒
❒
–
接线方式
例如,1 = 螺钉式端子
❒
软起动器的功能
例如,AC = 带旁路和模拟量输出,
三相控制
❒
❒
额定控制电压 Us
例如:0 = 24 V AC/DC
❒
额定工作电压 Ue
例如:4 = 200 ... 480 V AC
❒
–
特殊型号
❒
❒
❒
❒
示例
3RW52
1
5
–
1
A
C
0
4
注意:
这里显示产品版本参考,以便更好理解订货号背后的逻辑。
对于具体订单,请使用选型和订货数据中列明的订货号。
Operational classes
Fuses are categorized according to function and operational classes. SITOR semiconductor fuses, in LV HRC design, are available in the following operational classes:
•aR: for the short-circuit protection of power semiconductors (partial range protection)
•gR: for the protection of power semiconductors (full range protection)
•gS: The gS operational class combines cable and line protection with semiconductor protection (full range protection).
•Clear and visible conductor connection that can be easily checked when using MINIZED switch disconnectors D02. This facilitates cable entry and saves time.
•Bus-mounting of MINIZED fuse switch disconnectors D01 with three-phase pin busbar, which can be cut to length. Tried and tested.
•Single-phase busbar mounting of NEOZED fuse bases.
•Clear and visible conductor connection that can be easily checked when using NEOZED comfort base D02. This facilitates cable entry and saves time.
•Bus-mounting of NEOZED fuse bases made of molded plastic on three-phase busbar with fork plug, which can be cut to length. Frequently used.
•Bus-mounting of NEOZED fuse bases made of ceramic on three-phase busbar with fork plug, which can be cut to length. Most common application.
•Uniform solution for all sizes - ** detectors reliably indicate that the fuse has tripped. Tripped fuses are quickly located. This saves time and increases plant availability.
•The LV HRC ** detector top is a cost-effective solution for the monitoring of Siemens LV HRC fuse links of sizes 000, 00, 1 and 2.
•The silver-plated Lyra contact provides a large contact area for the pin of the LV HRC fuse link. This improves heat transmission and lowers the temperature. It also minimizes ageing of the fuse link in the maximum load range, in particular when using SITOR semiconductor fuses.
•The large contact area also facilitates replacement of LV HRC fuse links.
•The spring washer tensioning the contact is mechanically galvanized. This will prevent hydrogen embrittlement. The contact is resistant to aging and there will be no dreaded annealing of contacts, which considerably improves operating safety.