Taiwan自動控制設備交流 造訪社團

原文網址 Sun Color
2019-08-19 14:35:26

原文網址 李文卿
2019-08-19 13:31:36

英國,SPRINT ELECTRIC專業製造直流馬達驅動器(DC DRIVE)的公司,依我的經驗,此公司應該是目前世界上最專業的直流馬達驅動器(DC DRIVE)製造公司,所做的直流馬達驅動器(DC DRIVE)也應該是最優秀的. 在AC 取代DC 的洪流趨勢下,SPRINT ELECTRIC 仍然堅守DC DRIVE 的生意. 令人既佩服又困惑 https://www.sprint-electric.com/product-category/plx-series/

原文網址 陈建宏
2019-08-19 13:06:54

流水線視覺打標機,適合手機,數據線,行動電源等3C類電子產品打標使用。有需要了解的,歡迎留言!

Wan Fu Lin
2019-08-19 23:40:53

陈建宏
2019-08-20 08:34:51

原文網址 Hank Hung
2019-08-19 10:53:41

讓小弟打一下廣告,,因太多人不知道這產品,,用在高速度和高負載用最好

原文網址 李文卿
2019-08-19 08:38:51

馬達如何對抗驅動器PWM 產生的dv/dt 高壓

交流馬達的可變速系統中,交流馬達驅動器被普遍的使用,然而,PWM式的交流馬達驅動器又是主流,驅動器並不是輸出純正弦波給馬達的,而經由DC電壓再經由PWM carrier Frequency 切割得類正弦波,這樣的電壓,在馬達線圈中會產生dv/dt的高壓(時間很短),這個情況會隨驅動器與馬達的電纜線越長而越嚴重,雖然這dv/dt 高壓很短,但是極有可能擊穿馬內部線圈的絕緣.

漆包線的設計是給一般馬達,變壓器所使用,很少會去考慮到PWM的dv/dt. 所以如果馬達沒有使用抵抗PWM dv/dt 的漆包線,就會存在絕緣被擊穿的風險.

馬達絕緣被擊穿,造生產線停工的損失相當大。

要降低馬達被dv/dt 高壓擊穿的風險,一般的做法如下:

驅動器的輸出側加裝dv/dt filter-----很貴

使用抵抗dv/dt 專用漆包線----很貴

縮短馬達與驅動器之間的電纜長度---仍不很保險

一般使用者,並不會注意變頻器產生的dv/dt高壓問題,採用便宜一般沒有用抗的dv/dt 專用漆包線的馬達,沒有使用dv/dt filter,或是不注意馬達與驅動器之間的電纜長度,結果馬達絕緣擊穿,造成機械停工的經濟損失,省少錢造成大損失然後要馬達廠負責,實在不是很合合理.

附上抗dv/dt漆包線的檢驗資料, dv/dt的波形,馬達絕緣破壞的圖片供大家參考

本公司的馬達均使用抗dv/dt 的漆包線繞製線圈

黃信龍
2019-08-19 11:37:49

黃俊熹
2019-08-19 14:00:15

Musa Su
2019-08-21 18:05:51

原文網址 Mini Lai
2019-08-19 07:51:12

請問這種接頭可以去拿買

林大師
2019-08-19 07:56:57

Mini Lai
2019-08-19 07:59:02

林大師
2019-08-19 07:59:22

林志杰
2019-08-19 09:39:07

原文網址 李文卿
2019-08-18 18:27:44

巴西馬達大廠,新型驅動器內含PLC 功能 WEG,是中南美洲最大的馬達廠,近20年來努力進去驅動器市場已經看見他們努力的成果 WEG launches new cost-effective variable speed drive with embedded micro-PLC ? WEG has launched a new cost-effective range of inverter drives that gives exceptional performance for three-phase induction motor control. The CFW500 range features state-of-the-art technology to deliver a high level of control, but at an affordable price, enabling industrial manufacturers to improve processes and make significant cost savings.

WEG's new range of CFW500 inverter drives is robust, flexible and smart, and available in power ratings from 0.18 kW up to 22 kW. It has been designed to be versatile for many industrial automation applications including centrifugal and process pumps, fans, compressors and conveyors.

The CFW500 drives are based on modular plug and play design, extremely easy to use and program. The drive includes a built-in micro-PLC, which can be programmed according to standard protocol IEC 61131-3. It also comes with pre-programmed macros for a range of applications, for example positioning, timer and acceleration. Users can simply program the drive using the LCD HMI display, or via a computer through a variety of interfaces (RS232, USB, RS485). In contrast to other providers, WEG offers its WLP software for programming and monitoring to customers free of charge.

Designed with simplicity of installation and operation in mind, it can identify up to 64 different plug-in modules. CFW500 is ideal for supporting decentralised automation concepts and is easy to connect to all the major fieldbus systems including Profibus-DP, DeviceNet and CANopen. The drive features expansion plug-in modules, which makes it easy to customise even for bespoke applications.

The simple-to-use and intuitive LCD HMI gives indication of up to three simultaneous variables, such as speed, as well as indication of the main units and performance statistics of the inverter. The inverter drives are reliable and can operate in ambient temperatures up to 50°C.

"Our CFW500 range has been developed to be extremely easy to use and operate," says Paulo Krüger, European Automation Centre Manager at WEG. "I'm delighted that our customers can now benefit from advanced programming and control features to increase productivity and improve the quality of their processes, but at a cost-effective price. Typically applications do not run at full load all the time and by installing the CFW500 drive customers can save money by controlling the speed of their process and adjusting it to the specific load at any time." 翻譯年糕