產(chǎn)品細(xì)節(jié)介紹
140CPS21400電源模塊
額定值表標(biāo)準(zhǔn)制動(dòng)斬波器、制動(dòng)電阻、電纜和保險(xiǎn)絲表2-1和2-2中規(guī)定。（另見(jiàn)第4章-電氣安裝。）
ACS 600/NBRA-6xx組合的最大制動(dòng)功率給出了參考制動(dòng)循環(huán)（驅(qū)動(dòng)制動(dòng)器制動(dòng)一分鐘每十分鐘）。如果實(shí)際循環(huán)與參考循環(huán)，最大允許制動(dòng)功率必須為計(jì)算參見(jiàn)附錄B-最大制動(dòng)功率說(shuō)明。1.計(jì)算電機(jī)在制動(dòng)。
2.選擇合適的ACS 600*/制動(dòng)斬波器/制動(dòng)電阻
應(yīng)用程序的組合。必須滿足以下條件：PBR最大值>P最大值PBRmax見(jiàn)表2-1和表2-2。表中的PBRmax值為為參考制動(dòng)循環(huán)規(guī)定（制動(dòng)1分鐘，制動(dòng)9分鐘rest）。如果實(shí)際占空比與參考循環(huán)不對(duì)應(yīng)，則必須使用最大允許制動(dòng)功率PBR。見(jiàn)附錄B-用于計(jì)算PBR的最大制動(dòng)功率。
3.檢查電阻器選擇。電機(jī)產(chǎn)生的能量在400秒的時(shí)間內(nèi)，不得超過(guò)電阻器的熱量耗散能力ER（見(jiàn)表2-1和表2-2）。
如果ER值不夠，可以使用四電阻組件，其中兩個(gè)標(biāo)準(zhǔn)電阻器并聯(lián)，兩個(gè)串聯(lián)。的ER值四電阻組件是標(biāo)準(zhǔn)電阻指定值的四倍。
注：可以使用標(biāo)準(zhǔn)電阻器以外的電阻器。
但是，必須滿足以下條件：?電阻器電阻值不得低于標(biāo)準(zhǔn)電阻器電壓選擇必須在制動(dòng)斬波器安裝。根據(jù)電源電壓設(shè)置電壓斬波器控制板上的跳線。（切碎器前蓋必須拆下才能接觸跳線。）本章包含制動(dòng)斬波器電壓選擇說(shuō)明和機(jī)械安裝說(shuō)明。電壓選擇本章第一頁(yè)介紹了NBRA-6xx。
程序所有的直升機(jī)都是一樣的。機(jī)械安裝說(shuō)明如下從第3-3頁(yè)開(kāi)始，針對(duì)每種斬波器類型分別給出。如果連接了兩個(gè)（或更多）斬波器，則使用光纖位置同一中間電路，必須同步。一個(gè)切碎器–鏈條中的第一個(gè)–充當(dāng)其他直升機(jī)的主人。
這個(gè)主設(shè)備的電壓選擇跳線設(shè)置為適當(dāng)?shù)碾妷?，而從設(shè)備設(shè)置為FIBER。安裝現(xiàn)場(chǎng)NBRA-653/663防護(hù)等級(jí)為IP54。必須考慮這一點(diǎn)選擇安裝位置時(shí)。
還應(yīng)注意以下限制：?在制動(dòng)斬波器的下方和上方留出150 mm的自由空間。
?為防止斬波器過(guò)熱，請(qǐng)勿安裝斬波器制動(dòng)電阻正上方。
?在ACS 600裝置下方和上方留出300 mm的自由空間。
?斬波器和電阻器電纜的最大長(zhǎng)度為5 m分別為10m和10m。
安裝說(shuō)明適用于NBRA-653/663
?確保斬波器電壓水平設(shè)置正確（見(jiàn)第3-1頁(yè)）。
?檢查預(yù)定安裝地點(diǎn)是否有足夠的空間。標(biāo)記四個(gè)孔的位置。
?在四個(gè)位置鉆孔。確保鉆孔產(chǎn)生的灰塵不進(jìn)入正在安裝的設(shè)備或其他設(shè)備安裝地點(diǎn)。
?將螺釘插入孔中。必要時(shí)使用塞子。
?將切碎器提升到墻上的螺釘上。
?擰緊螺釘。
Rating Tables
The standard braking choppers, braking resistors, cables and fuses are specified in Tables 2-1 and 2-2. (See also Chapter 4 – Electrical Installation.) The Maximum Braking Power of the ACS 600 / NBRA-6xx combination is given for a reference braking cycle (the drive brakes for one minute every ten minutes). If the actual cycle does not correspond to the reference cycle, the maximum allowed braking power must be calculated. See Appendix B – Maximum Braking Power for instructions.
Calculate the maximum power (Pmax) generated by the motor during braking. 2. Select a suitable ACS 600* / braking chopper / braking resistor combination for the application. The following condition must be met: PBRmax > Pmax See Table 2-1 and Table 2-2 for PBRmax. The PBRmax values in the tables are specified for the reference braking cycle (one minute of braking, nine minutes of rest). If the actual duty cycle does not correspond to the reference cycle, the maximum allowed braking power PBR must be used instead. See Appendix B – Maximum Braking Power for the calculation of PBR . 3. Check the resistor selection. The energy generated by the motor during a 400-second period must not exceed the resistor heat dissipation capacity ER (see Table 2-1 and Table 2-2). If the ER value is not sufficient, it is possible to use a four-resistor assembly in which two standard resistors are connected in parallel, two in series. The ER value of the four-resistor assembly is four times the value specified for the standard resistor. Note: A resistor other than the standard resistor can be used. However, the following conditions must be met: ? Resistor resistance value must not be below the resistance value of the standard resistor
Voltage Selection
The voltage level must be selected before the braking chopper is mounted. The voltage is set, according to the mains voltage, with a jumper on the chopper control board. (The front cover of the chopper has to be removed to access the jumper.)This chapter contains braking chopper voltage selection instructions and mechanical installation instructions. The voltage selection for the NBRA-6xx is described on the first page of the chapter. The procedure is the same for all the choppers. Mechanical installation instructions are given separately for each chopper type starting from page 3-3.The FIBER position is used if two (or more) choppers are connected to the same intermediate circuit and must be synchronised. One chopper – the first in the chain – acts as the master for the other choppers. The voltage selection jumper of the master is set to the appropriate voltage, while the slaves are set to FIBER.
Installation Site
The NBRA-653/663 is protected to IP54. This must be considered when selecting the installation site. The following restrictions should also be noted: ? Leave 150 mm free space below and above the braking chopper. ? To prevent the chopper overheating, do not mount the chopper directly above the braking resistor. ? Leave 300 mm free space below and above the ACS 600 unit. ? The maximum lengths of the chopper and resistor cables are 5 m and 10 m respectively. Mounting Instructions for NBRA-653/663 ? Ensure that the chopper voltage level is set correctly (see page 3-1). ? Check the intended installation site for sufficient room. Mark the locations for the four holes. ? Make holes in the four positions. Make sure the dust from drilling does not enter the unit you are installing or other equipment at the installation site. ? Insert screws in the holes. Use plugs if necessary. ? Lift the chopper onto the screws on the wall. ? Tighten the screws.
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