產(chǎn)品詳情
西門子3RW5545-2HA16。西門子3RW44軟啟動器是星形-三角形啟動器和變頻器的替代產(chǎn)品。其主要優(yōu)勢在于外形緊湊并且能夠執(zhí)行軟啟動、軟停止和不間斷切換,而不會產(chǎn)生對系統(tǒng)造成負擔(dān)的電流峰值。對于許多至今為止只能采用變頻器進行操作的驅(qū)動裝置,只要它們無需速度控制,沒有特別高的起動轉(zhuǎn)矩,或要求起動電流接近額定電流,便可改用 3RW44 軟啟動器。典型應(yīng)用包括:傳送帶、輥子輸送機、壓縮機、排風(fēng)機,風(fēng)扇、泵、液壓泵、攪拌機、離心機、銑床、碾機、破碎機、圓鋸/帶鋸等。
西門子PLC(S7-200、S7-200 SMART、S7-300、S7-400、S7-1200、S7-1500、ET200S、ET200M、ET200SP)、觸摸屏、變頻器、工控機、電線電纜、儀器儀表等,產(chǎn)品選型、詢價、采購,敬請聯(lián)系,上海啟水自動化科技有限公司:
卜經(jīng)理:18202105796(同微信) 工作QQ:2880583563
電話:021-60641323 傳真:021-67601695
地址:上海松江區(qū)鼎源路618弄16號305
西門子3RW5545-2HA16 西門子3RW44軟啟動器 銷售訂貨型號:
3RW5513-1HA04
3RW5513-1HA05
3RW5513-1HA14
3RW5513-1HA15
3RW5513-3HA04
3RW5513-3HA05
3RW5513-3HA14
3RW5513-3HA15
3RW5514-1HA04
3RW5514-1HA05
3RW5514-1HA14
3RW5514-1HA15
3RW5514-3HA04
3RW5514-3HA05
3RW5514-3HA14
3RW5514-3HA15
3RW5515-1HA04
3RW5515-1HA05
3RW5515-1HA14
3RW5515-1HA15
3RW5515-3HA04
3RW5515-3HA05
3RW5515-3HA14
3RW5515-3HA15
3RW5516-1HA04
3RW5516-1HA05
3RW5516-1HA14
3RW5516-1HA15
3RW5516-3HA04
3RW5516-3HA05
3RW5516-3HA14
3RW5516-3HA15
3RW5517-1HA04
3RW5517-1HA05
3RW5517-1HA14
3RW5517-1HA15
3RW5517-3HA04
3RW5517-3HA05
3RW5517-3HA14
3RW5517-3HA15
3RW5521-1HA06
3RW5521-1HA16
3RW5521-3HA06
3RW5521-3HA16
3RW5524-1HA04
3RW5524-1HA06
3RW5524-1HA14
3RW5524-1HA16
3RW5524-3HA04
3RW5524-3HA06
3RW5524-3HA14
3RW5524-3HA16
3RW5525-1HA04
3RW5525-1HA06
3RW5525-1HA14
3RW5525-1HA16
3RW5525-3HA04
3RW5525-3HA06
3RW5525-3HA14
3RW5525-3HA16
3RW5526-1HA04
3RW5526-1HA06
3RW5526-1HA14
3RW5526-1HA16
3RW5526-3HA04
3RW5526-3HA06
3RW5526-3HA14
3RW5526-3HA16
3RW5527-1HA04
3RW5527-1HA06
3RW5527-1HA14
3RW5527-1HA16
3RW5527-3HA04
3RW5527-3HA06
3RW5527-3HA14
3RW5527-3HA16
3RW5534-2HA04
3RW5534-2HA06
3RW5534-2HA14
3RW5534-2HA16
3RW5534-6HA04
3RW5534-6HA06
3RW5534-6HA14
3RW5534-6HA16
3RW5535-2HA04
3RW5535-2HA06
3RW5535-2HA14
3RW5535-2HA16
3RW5535-6HA04
3RW5535-6HA06
3RW5535-6HA14
3RW5535-6HA16
3RW5536-2HA04
3RW5536-2HA06
3RW5536-2HA14
3RW5536-2HA16
3RW5536-6HA04
3RW5536-6HA06
3RW5536-6HA14
3RW5536-6HA16
3RW5543-2HA04
3RW5543-2HA06
3RW5543-2HA14
3RW5543-2HA16
3RW5543-6HA04
3RW5543-6HA06
3RW5543-6HA14
3RW5543-6HA16
3RW5544-2HA04
3RW5544-2HA06
3RW5544-2HA14
3RW5544-2HA16
3RW5544-6HA04
3RW5544-6HA06
3RW5544-6HA14
3RW5544-6HA16
3RW5545-2HA04
3RW5545-2HA06
3RW5545-2HA14
3RW5545-2HA16
3RW5545-6HA04
3RW5545-6HA06
3RW5545-6HA14
3RW5545-6HA16
3RW5546-2HA04
3RW5546-2HA06
3RW5546-2HA14
3RW5546-2HA16
3RW5546-6HA04
3RW5546-6HA06
3RW5546-6HA14
3RW5546-6HA16
3RW5547-2HA04
3RW5547-2HA06
3RW5547-2HA14
3RW5547-2HA16
3RW5547-6HA04
3RW5547-6HA06
3RW5547-6HA14
3RW5547-6HA16
3RW5548-2HA04
3RW5548-2HA06
3RW5548-2HA14
3RW5548-2HA16
3RW5548-6HA04
3RW5548-6HA06
3RW5548-6HA14
3RW5548-6HA16
3RW5552-2HA04
3RW5552-2HA06
3RW5552-2HA14
3RW5552-2HA16
3RW5552-6HA04
3RW5552-6HA06
3RW5552-6HA14
3RW5552-6HA16
3RW5553-2HA04
3RW5553-2HA06
3RW5553-2HA14
3RW5553-2HA16
3RW5553-6HA04
3RW5553-6HA06
3RW5553-6HA14
3RW5553-6HA16
3RW5554-2HA04
3RW5554-2HA06
3RW5554-2HA14
3RW5554-2HA16
3RW5554-6HA04
3RW5554-6HA06
3RW5554-6HA14
3RW5554-6HA16
3RW5556-2HA04
3RW5556-2HA06
3RW5556-2HA14
3RW5556-2HA16
3RW5556-6HA04
3RW5556-6HA06
3RW5556-6HA14
3RW5556-6HA16
3RW5558-2HA04
3RW5558-2HA06
3RW5558-2HA14
3RW5558-2HA16
3RW5558-6HA04
3RW5558-6HA06
3RW5558-6HA14
3RW5558-6HA16
3RW5055-2AB04
3RW5055-2AB05
3RW5055-2AB14
3RW5055-2AB15
3RW5055-2TB04
3RW5055-2TB05
3RW5055-2TB14
3RW5055-2TB15
3RW5055-6AB04
3RW5055-6AB05
3RW5055-6AB14
3RW5055-6AB15
3RW5055-6TB04
3RW5055-6TB05
3RW5055-6TB14
3RW5055-6TB15
3RW5056-2AB04
3RW5056-2AB05
3RW5056-2AB14
3RW5056-2AB15
3RW5056-2TB04
3RW5056-2TB05
3RW5056-2TB14
3RW5056-2TB15
3RW5056-6AB04
3RW5056-6AB05
3RW5056-6AB14
3RW5056-6AB15
3RW5056-6TB04
3RW5056-6TB05
3RW5056-6TB14
3RW5056-6TB15
3RW5072-2AB04
3RW5072-2AB05
3RW5072-2AB14
3RW5072-2AB15
3RW5072-2TB04
3RW5072-2TB05
3RW5072-2TB14
3RW5072-2TB15
3RW5072-6AB04
3RW5072-6AB05
3RW5072-6AB14
3RW5072-6AB15
3RW5072-6TB04
3RW5072-6TB05
3RW5072-6TB14
3RW5072-6TB15
3RW5073-2AB04
3RW5073-2AB05
3RW5073-2AB14
3RW5073-2AB15
3RW5073-2TB04
3RW5073-2TB05
3RW5073-2TB14
3RW5073-2TB15
3RW5073-6AB04
3RW5073-6AB05
3RW5073-6AB14
3RW5073-6AB15
3RW5073-6TB04
3RW5073-6TB05
3RW5073-6TB14
3RW5073-6TB15
3RW5074-2AB04
3RW5074-2AB05
3RW5074-2AB14
3RW5074-2AB15
3RW5074-2TB04
3RW5074-2TB05
3RW5074-2TB14
3RW5074-2TB15
3RW5074-6AB04
3RW5074-6AB05
3RW5074-6AB14
3RW5074-6AB15
3RW5074-6TB04
3RW5074-6TB05
3RW5074-6TB14
3RW5074-6TB15
3RW5075-2AB04
3RW5075-2AB05
3RW5075-2AB14
3RW5075-2AB15
3RW5075-2TB04
3RW5075-2TB05
3RW5075-2TB14
3RW5075-2TB15
3RW5075-6AB04
3RW5075-6AB05
3RW5075-6AB14
3RW5075-6AB15
3RW5075-6TB04
3RW5075-6TB05
3RW5075-6TB14
3RW5075-6TB15
3RW5076-2AB04
3RW5076-2AB05
3RW5076-2AB14
3RW5076-2AB15
3RW5076-2TB04
3RW5076-2TB05
3RW5076-2TB14
3RW5076-2TB15
3RW5076-6AB04
3RW5076-6AB05
3RW5076-6AB14
3RW5076-6AB15
3RW5076-6TB04
3RW5076-6TB05
3RW5076-6TB14
3RW5076-6TB15
3RW5077-2AB04
3RW5077-2AB05
3RW5077-2AB14
3RW5077-2AB15
3RW5077-2TB04
3RW5077-2TB05
3RW5077-2TB14
3RW5077-2TB15
3RW5077-6AB04
3RW5077-6AB05
3RW5077-6AB14
3RW5077-6AB15
3RW5077-6TB04
3RW5077-6TB05
3RW5077-6TB14
3RW5077-6TB15
3RW3013-1BB04
3RW3013-1BB14
3RW3013-2BB04
3RW3013-2BB14
3RW3014-1BB04
3RW3014-1BB14
3RW3014-2BB04
3RW3014-2BB14
3RW3016-1BB04
3RW3016-1BB14
3RW3016-2BB04
3RW3016-2BB14
3RW3017-1BB04
3RW3017-1BB14
3RW3017-2BB04
3RW3017-2BB14
3RW3018-1BB04
3RW3018-1BB14
3RW3018-2BB04
3RW3018-2BB14
3RW3026-1BB04
3RW3026-1BB14
3RW3026-2BB04
3RW3026-2BB14
3RW3027-1BB04
3RW3027-1BB14
3RW3027-2BB04
3RW3027-2BB14
3RW3028-1BB04
3RW3028-1BB14
3RW3028-2BB04
3RW3028-2BB14
3RW3036-1BB04
3RW3036-1BB14
3RW3036-2BB04
3RW3036-2BB14
3RW3037-1BB04
3RW3037-1BB14
3RW3037-2BB04
3RW3037-2BB14
3RW3038-1BB04
3RW3038-1BB14
3RW3038-2BB04
3RW3038-2BB14
3RW3046-1BB04
3RW3046-1BB14
3RW3046-2BB04
3RW3046-2BB14
3RW3047-1BB04
3RW3047-1BB14
3RW3047-2BB04
3RW3047-2BB14
3RW4024-1BB04
3RW4024-1BB05
3RW4024-1BB14
3RW4024-1BB15
3RW4024-1TB04
3RW4024-1TB05
3RW4024-2BB04
3RW4024-2BB05
3RW4024-2BB14
3RW4024-2BB15
3RW4024-2TB04
3RW4024-2TB05
3RW4026-1BB04
3RW4026-1BB05
3RW4026-1BB14
3RW4026-1BB15
3RW4026-1TB04
3RW4026-1TB05
3RW4026-2BB04
3RW4026-2BB05
3RW4026-2BB14
3RW4026-2BB15
3RW4026-2TB04
3RW4026-2TB05
3RW4027-1BB04
3RW4027-1BB05
3RW4027-1BB14
3RW4027-1BB15
3RW4027-1TB04
3RW4027-1TB05
3RW4027-2BB04
3RW4027-2BB05
3RW4027-2BB14
3RW4027-2BB15
3RW4027-2TB04
3RW4027-2TB05
3RW4028-1BB04
3RW4028-1BB05
3RW4028-1BB14
3RW4028-1BB15
3RW4028-1TB04
3RW4028-1TB05
3RW4028-2BB04
3RW4028-2BB05
3RW4028-2BB14
3RW4028-2BB15
3RW4028-2TB04
3RW4028-2TB05
3RW4036-1BB04
3RW4036-1BB05
3RW4036-1BB14
3RW4036-1BB15
3RW4036-1TB04
3RW4036-1TB05
3RW4036-2BB04
3RW4036-2BB05
3RW4036-2BB14
3RW4036-2BB15
3RW4036-2TB04
3RW4036-2TB05
3RW4037-1BB04
3RW4037-1BB05
3RW4037-1BB14
3RW4037-1BB15
3RW4037-1TB04
3RW4037-1TB05
3RW4037-2BB04
3RW4037-2BB05
3RW4037-2BB14
3RW4037-2BB15
3RW4037-2TB04
3RW4037-2TB05
3RW4038-1BB04
3RW4038-1BB05
3RW4038-1BB14
3RW4038-1BB15
3RW4038-1TB04
3RW4038-1TB05
3RW4038-2BB04
3RW4038-2BB05
3RW4038-2BB14
3RW4038-2BB15
3RW4038-2TB04
3RW4038-2TB05
3RW4046-1BB04
3RW4046-1BB05
3RW4046-1BB14
3RW4046-1BB15
3RW4046-1TB04
3RW4046-1TB05
3RW4046-2BB04
3RW4046-2BB05
3RW4046-2BB14
3RW4046-2BB15
3RW4046-2TB04
3RW4046-2TB05
3RW4047-1BB04
3RW4047-1BB05
3RW4047-1BB14
3RW4047-1BB15
3RW4047-1TB04
3RW4047-1TB05
3RW4047-2BB04
3RW4047-2BB05
3RW4047-2BB14
3RW4047-2BB15
3RW4047-2TB04
3RW4047-2TB05
3RW4055-2BB34
3RW4055-2BB35
3RW4055-2BB44
3RW4055-2BB45
3RW4055-6BB34
3RW4055-6BB35
3RW4055-6BB44
3RW4055-6BB45
3RW4056-2BB34
3RW4056-2BB35
3RW4056-2BB44
3RW4056-2BB45
3RW4056-6BB34
3RW4056-6BB35
3RW4056-6BB44
3RW4056-6BB45
3RW4073-2BB34
3RW4073-2BB35
3RW4073-2BB44
3RW4073-2BB45
3RW4073-6BB34
3RW4073-6BB35
3RW4073-6BB44
3RW4073-6BB45
3RW4074-2BB34
3RW4074-2BB35
3RW4074-2BB44
3RW4074-2BB45
3RW4074-6BB34
3RW4074-6BB35
3RW4074-6BB44
3RW4074-6BB45
3RW4075-2BB34
3RW4075-2BB35
3RW4075-2BB44
3RW4075-2BB45
3RW4075-6BB34
3RW4075-6BB35
3RW4075-6BB44
3RW4075-6BB45
3RW4076-2BB34
3RW4076-2BB35
3RW4076-2BB44
3RW4076-2BB45
3RW4076-6BB34
3RW4076-6BB35
3RW4076-6BB44
3RW4076-6BB45
3RW4422-1BC34
3RW4422-1BC35
3RW4422-1BC36
3RW4422-1BC44
3RW4422-1BC45
3RW4422-1BC46
3RW4422-3BC34
3RW4422-3BC35
3RW4422-3BC36
3RW4422-3BC44
3RW4422-3BC45
3RW4422-3BC46
3RW4423-1BC34
3RW4423-1BC35
3RW4423-1BC36
3RW4423-1BC44
3RW4423-1BC45
3RW4423-1BC46
3RW4423-3BC34
3RW4423-3BC35
3RW4423-3BC36
3RW4423-3BC44
3RW4423-3BC45
3RW4423-3BC46
3RW4424-1BC34
3RW4424-1BC35
3RW4424-1BC36
3RW4424-1BC44
3RW4424-1BC45
3RW4424-1BC46
3RW4424-3BC34
3RW4424-3BC35
3RW4424-3BC36
3RW4424-3BC44
3RW4424-3BC45
3RW4424-3BC46
3RW4425-1BC34
3RW4425-1BC35
3RW4425-1BC36
3RW4425-1BC44
3RW4426-1BC36
3RW4426-1BC44
3RW4426-1BC45
3RW4426-1BC46
3RW4426-3BC34
3RW4426-3BC35
3RW4426-3BC36
3RW4426-3BC44
3RW4426-3BC45
3RW4426-3BC46
3RW4427-3BC45
3RW4427-3BC46
3RW4434-2BC34
3RW4434-2BC35
3RW4434-2BC36
3RW4434-2BC44
3RW4434-2BC45
3RW4434-2BC46
3RW4434-6BC34
3RW4434-6BC35
3RW4435-6BC34
3RW4435-6BC35
3RW4435-6BC36
3RW4435-6BC44
3RW4435-6BC45
3RW4435-6BC46
3RW4436-2BC34
3RW4436-2BC35
3RW4436-2BC36
3RW4436-2BC44
3RW4443-2BC36
3RW4443-2BC44
3RW4443-2BC45
3RW4443-2BC46
3RW4443-6BC34
3RW4443-6BC35
3RW4443-6BC36
3RW4443-6BC44
3RW4443-6BC45
3RW4443-6BC46
3RW4444-2BC34
3RW4444-2BC35
3RW4444-2BC36
3RW4444-2BC44
3RW4444-2BC45
3RW4444-2BC46
3RW4444-6BC34
3RW4444-6BC35
3RW4444-6BC36
3RW4444-6BC44
3RW4445-6BC36
3RW4445-6BC44
3RW4445-6BC45
3RW4445-6BC46
3RW4446-2BC34
3RW4446-2BC35
3RW4446-2BC36
3RW4446-2BC44
3RW4446-2BC45
3RW4446-2BC46
西門子3RW5545-2HA16 西門子3RW44軟啟動器 產(chǎn)品簡介:
SIRIUS 3RW44 電子式電機軟起動器是為簡單的起動條件而設(shè)計的。一旦出現(xiàn)起動負載較大或者起停頻率增加的情況,就必須選擇較大額定值的產(chǎn)品。
3RW44 軟起動器可以用在電壓高達 600 V AC 的隔離電源網(wǎng)絡(luò)(IT 系統(tǒng))中。
若起動時間較長,建議在電機中使用 PTC 傳感器。轉(zhuǎn)矩控制、泵的停止以及直流制動減速停止等模式也是這種情況,因為在這些模式下的斜坡減速時間內(nèi),與自由斜坡減速相比會有額外的電流負載。
不允許在電機饋電線內(nèi) SIRIUS 3RW 軟起動器和電機之間使用電容性元件(如,不能使用無功補償設(shè)備)。此外,無論是用于無功補償?shù)撵o態(tài)系統(tǒng),還是動態(tài) PFC(功率因數(shù)校正),在啟動時和軟起動器斜降時都不能并行操作。這對于防止補償設(shè)備和/或軟起動器發(fā)生故障來說十分重要。
主電路的所有元件(比如熔斷器和控制器)應(yīng)該按照在加載短路時直接起動的情況下相應(yīng)的進行選型。熔斷器和分斷裝置必須單獨訂購。
3RW44 軟起動器中已集成一個旁路觸點系統(tǒng)和固態(tài)過載繼電器,無需單獨訂購。
在選擇斷路器(選擇脫扣器)時,必須考慮用于起動電流的諧波分量負載。
3RW44 電子軟啟動器是為正常起動而設(shè)計的。一旦出現(xiàn)起動負載較大或者起動頻率增加的情況,就必須選擇較大額定值的產(chǎn)品。
若起動時間較長,建議在電機中使用 PTC 傳感器。這也適用于軟停止、泵停止和直流制動等滑行方法,因為在這些模式下的減速時間內(nèi),相對于滑行停止,將會產(chǎn)生額外的電流負載。
軟啟動器和電機之間的電機饋線不得包含任何電容性元件(例如補償系統(tǒng))。有源濾波器不得與軟啟動器結(jié)合使用。
主電路所有元件(如熔斷器和開關(guān)裝置)的規(guī)格設(shè)計應(yīng)滿足直接起動要求并符合局部短路情況且必須單獨訂購。
在選擇電機啟動器保護器(選擇脫扣器)時,必須考慮起動電流的諧波分量負載。
重載起動應(yīng)用實例(20 級):
CLASS 20 重載起動(最長 40 s,350 % In motor,每小時一次起動) |
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應(yīng)用 |
攪拌機 |
離心機 |
銑削機器 |
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起動參數(shù) |
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% |
30 |
30 |
30 |
|
s |
30 |
30 |
30 |
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4 x IM |
4 x IM |
4 x IM |
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|
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% |
30 |
30 |
30 |
|
% |
150 |
150 |
150 |
|
s |
30 |
30 |
30 |
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已禁用 (0 ms) |
已禁用 (0 ms) |
已禁用 (0 ms) |
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慣性減速方式 |
慣性減速 |
慣性減速 |
慣性減速或直流制動 |
要實現(xiàn)軟起動器設(shè)計,必須了解并考慮應(yīng)用的起動時間(起動等級)。起動時間越長意味著軟起動器的晶閘管上的熱負載就越大。3RW44 軟起動器可在正常起動條件 (CLASS 10)、40 °C 環(huán)境溫度、開關(guān)頻率為固定值的情況下連續(xù)工作。還可在“電源單元的技術(shù)數(shù)據(jù)”一章中找到這些值。如果與這些數(shù)據(jù)存在偏差,可能需要加大起動器的尺寸。
由于 SIRIUS 3RW44 軟啟動器可適用的應(yīng)用范圍很廣,因此可以選擇不同起動功能。可針對各個特定的應(yīng)用對電機起動進行優(yōu)化調(diào)整。
使用電壓斜坡可通過 SIRIUS 3RW44 軟啟動器實現(xiàn)最簡單的軟起動。在可調(diào)節(jié)起動時間內(nèi),電機端子電壓會從可參數(shù)化的起動電壓升至線電壓。該起動模式在快速起動菜單中預(yù)設(shè)。
起動電壓:
起動電壓決定了電機的起動轉(zhuǎn)矩。起動電壓越低,擰緊扭矩和起動電流也越低。選擇起動電壓時,應(yīng)能在起動命令傳入軟啟動器后使電機立即平穩(wěn)起動。
起動時間:
起動時間的長度決定了電機電壓從參數(shù)化的起動電壓增至電源電壓所需的時間。這會影響電機的加速轉(zhuǎn)矩,這一轉(zhuǎn)矩將在斜坡上升工作期間驅(qū)動負載。起動時間越長,電機斜坡上升期間的加速轉(zhuǎn)矩就越小。由此,電機的起動過程就越長、越平穩(wěn)。選擇起動時間時,應(yīng)能使電機在此時間內(nèi)達到其額定轉(zhuǎn)速。如果選擇的時間過短(例如,起動時間在電機成功起動之前就結(jié)束),則在結(jié)束的這一時刻,起動電流會很高,將達到此轉(zhuǎn)速下直接起動的電流值。在這種情況下,軟啟動器可以通過內(nèi)部過載保護功能自行關(guān)閉,并進入故障模式。
起動時間:
可以使用“最長起動時間”(Maximum starting time) 參數(shù)來確定驅(qū)動器完成起動所必需的時間。如果在經(jīng)過時間間隔后驅(qū)動器未處于額定運行條件下,則起動過程將被中斷,并會生成一條故障消息。
內(nèi)部起動識別:
軟啟動器具備內(nèi)部起動識別功能。如果設(shè)備識別出電機完全起動,則內(nèi)部旁路接觸器會吸合,晶閘管將被橋接。如果在經(jīng)過所設(shè)置的起動時間之前執(zhí)行了此起動識別過程,則斜坡被中斷,電機電壓會立即升高到 100% 的線電壓,內(nèi)部旁路接觸器隨后吸合。
電流限制與電壓斜坡或轉(zhuǎn)矩控制起動模式相結(jié)合
啟動器借助集成電流互感器連續(xù)測量相電流(電機電流)。
可以在電機啟動時在軟啟動器上設(shè)置電流限值。
將“電壓斜坡 + 電流限制”(voltage ramp + current limiting) 或“轉(zhuǎn)矩控制 + 電流限制”(torque control + current limiting) 選作起動模式并在相應(yīng)的參數(shù)中輸入數(shù)值后,可激活電流限制。
在啟動期間,相電流會被限制為設(shè)定的值,直至低于該值。在起步期間,電流限值上會疊加一個設(shè)定的起步脈沖。
電流限值:
電流限值被設(shè)置為電機額定電流與啟動期間所需電流之間的比例系數(shù)。達到選擇的電流限值后,軟啟動器將減小或控制電機電壓,以防電流超出所設(shè)置的電流限值。設(shè)置的電流限值必須足夠高,以確保電機中生成的轉(zhuǎn)矩足以使電機加速至額定轉(zhuǎn)速。可以將該電流限值的典型值假定為電機額定工作電流 (Ie) 的三到四倍。
斜坡上升檢測:
軟啟動器具備內(nèi)部起動識別功能。如果其檢測到電機斜坡上升,則電機電壓會立即增至 100% 的線電壓。內(nèi)部旁路接觸器會吸合,晶閘管將被橋接。
轉(zhuǎn)矩控制和泵停止:
設(shè)置“受轉(zhuǎn)矩控制的停止”和“泵停止”時,負載的滑行停止(或自然停止)將減速進行。如果需要防止負載突然停止,應(yīng)設(shè)置該功能。典型示例包括質(zhì)量慣性值較小或者反轉(zhuǎn)矩較高的應(yīng)用。
為了確保在停止過程中實施轉(zhuǎn)矩控制,應(yīng)在所選參數(shù)組中使用“設(shè)置”(Setting) 菜單項輸入軟啟動器所連電機的電機數(shù)據(jù)。
滑行停止時間和停止轉(zhuǎn)矩
通過軟啟動器上的“滑行停止時間”(Coast-down time) 參數(shù),可在移除“ON”命令后,仍應(yīng)為電機供電的時間。在該滑行停止時間內(nèi),電機中產(chǎn)生的轉(zhuǎn)矩將連續(xù)線性地降至設(shè)定的停止轉(zhuǎn)矩,相應(yīng)的應(yīng)用將平穩(wěn)停止。
泵停止:
在泵應(yīng)用中,如果驅(qū)動器在未采用泵停止的情況下突然停止,則會發(fā)生所謂的水錘現(xiàn)象。水錘現(xiàn)象是由泵突然失速以致泵中產(chǎn)生壓差而造成。這會產(chǎn)生噪聲,并會對管道系統(tǒng)及其內(nèi)安裝的翻板閥和其它閥門產(chǎn)生機械影響。
優(yōu)勢價格 現(xiàn)貨銷售:西門子3RW5545-2HA16