產(chǎn)品細(xì)節(jié)介紹
140AVI03000模擬量輸入模塊
斬波器控制上有啟用輸入和繼電器輸出板輸入可以連接到溫度敏感開關(guān)安裝在電阻器組件中，以保護(hù)電阻器免受過熱（詳見第4章-電氣安裝信息）。繼電器輸出指示斬波器故障。斬波器可以通過外部控制位置控制光纖鏈路。使用鏈接可以同步多個(gè)制動(dòng)斬波器。在標(biāo)準(zhǔn)應(yīng)用中，光纖鏈路不是習(xí)慣于附件強(qiáng)烈建議為ACS 600配備主接觸器由斬波繼電器輸出控制。此配置還需要用于系統(tǒng)啟動(dòng)的手動(dòng)啟動(dòng)/停止開關(guān)。有關(guān)更多信息，參見第4章-電氣安裝。
交貨檢查該包裝包含：?制動(dòng)斬波器類型NBRA-6xx（根據(jù)表2-1檢查正確類型）
?NBRA-6xx安裝和啟動(dòng)指南（本文件）。
保修請(qǐng)參閱隨頻率提供的安裝和啟動(dòng)手冊(cè)
轉(zhuǎn)換器以獲取保修信息。制動(dòng)電阻器每個(gè)ACS 600/NBRA-6xx都有標(biāo)準(zhǔn)電阻器
結(jié)合體表2-1中規(guī)定了這些電阻器附錄A中給出的尺寸（一些組合需要使用兩個(gè)并聯(lián)電阻。）具有電阻的其他電阻器也可以使用不低于最小允許電阻值（R）的電阻。
警告！切勿使用電阻值低于此值的制動(dòng)電阻器該特定規(guī)定的最小允許電阻值A(chǔ)CS 600/制動(dòng)斬波器組合。切碎器和變頻器無法處理低電阻。
如果標(biāo)準(zhǔn)制動(dòng)電阻器的散熱能力（ER）為不足以應(yīng)用，可以使用四個(gè)電阻器兩個(gè)標(biāo)準(zhǔn)電阻器并聯(lián)的組件兩個(gè)串聯(lián)。此實(shí)施不會(huì)改變總阻力電阻器組件。
保險(xiǎn)絲NBRA-658、NBRA-659和NBRA-669需要使用制動(dòng)電路保險(xiǎn)絲。
如果出現(xiàn)以下所有情況，則其他裝置不需要保險(xiǎn)絲滿足規(guī)定：
?ACS 600電源電纜由保險(xiǎn)絲保護(hù)
?電纜和熔斷器為特定類型安裝和啟動(dòng)手冊(cè)中的變頻器型號(hào)
?制動(dòng)斬波器電路電纜符合本指南的規(guī)定。
制動(dòng)電路中的保險(xiǎn)絲保護(hù)斬波器和制動(dòng)電纜短路情況下的電路電纜。
保險(xiǎn)絲不起保護(hù)作用防止電纜、斬波器或電阻器過載。
超載可通過接線的溫度傳感器實(shí)現(xiàn)保護(hù)電阻器連接至斬波器的啟用輸入，同時(shí)將斬波器的繼電器輸出連接到主接觸器ACS 600的控制電路。
保險(xiǎn)絲必須安裝在盡可能靠近ACS 600的地方中間電路端子（UDC+和UDC-）。
無保護(hù)電纜長(zhǎng)度不得超過0.5米。
There is an enable input
and a relay output on the chopper control board. The input can be connected to a temperature sensitive switch mounted in the resistor assembly to protect the resistor against overtemperature (see Chapter 4 – Electrical Installation for more information). The relay output indicates chopper faults. The chopper can be controlled from an external control location via a fibre optic link. Using the link it is possible to synchronise several braking choppers. In standard applications the fibre optic link is not used. Accessories It is highly recommended to equip the ACS 600 with a main contactor controlled by the chopper relay output. This configuration also requires a manual start/stop switch for system start-up. For more information, see Chapter 4 – Electrical Installation. Delivery Check The package contains: ? Braking chopper type NBRA-6xx (check the correct type with Table 2-1) ? Installation and Start-up Guide for NBRA-6xx (this document). Warranty See the Installation and Start-up Manual delivered with the frequency converter for warranty information.
Braking Resistors
Standard resistors are available for each ACS 600 / NBRA-6xx combination. These resistors are specified in Table 2-1, and their dimensions given in Appendix A. (Some combinations require the use of two parallel-connected resistors.) Other resistors with a resistance not below the minimum allowed resistance value (R) may also be used. WARNING! Never use a braking resistor with a resistance value below the minimum allowed resistance value specified for that particular ACS 600 / braking chopper combination. The chopper and the frequency converter are not able to handle the overcurrent caused by the low resistance. If the heat dissipation capacity (ER) of the standard braking resistor is not sufficient for the application, it is possible to use a four resistor assembly in which two standard resistors are connected in parallel and two in series. This implementation does not change the total resistance of the resistor assembly. Fuses The NBRA-658, NBRA-659 and NBRA-669 require the use of braking circuit fuses. Other units do not require the fuses if all of the following provisions are fulfilled: ? the ACS 600 mains cable is protected with fuses ? the cable and the fuses are of the type specified for that particular converter model in its Installation and Start-up Manual ? the braking chopper circuit cables are as specified in this Guide.
The fuses in the braking circuit protect
the chopper and the braking circuit cables in a cable short-circuit situation. The fuses do not protect the cables, the chopper or the resistor against overload. Overload protection can be implemented by wiring the temperature sensor of the resistor to the Enable Input of the chopper and simultaneously connecting the Relay Output of the chopper to the main contactor control circuit of the ACS 600. The fuses must be installed as near as possible to the ACS 600 intermediate circuit terminals (UDC+ and UDC–). Unprotected cable length must not exceed 0.5 metres.
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