Is line contactor mandatory for Altistarts ATS22, ATS480, ATS490?
It is required for ATS22, ATS480. Not needed for ATS490 due to presence of safety function.
If the thyristors in ATS22, ATS480 are in short-circuit or bypass relay in ATS22 is stuck, Altistart will detect it but will not be able to stop the motor, despite the active stop command from whatever channel (Logic input, PLC). Not having possibility to stop the motor is not safe situation. Altistart can only provide signalization using fault relay, but there must be a device that will react on fault signal and stop the motor. Does not need to be necessarily the contactor, it can be circuit breaker with under voltage trip for example. Altistart with fault relay will interrupt the signal on under voltage trip, so breaker will cut the current to the motor.
發佈於: 施耐德電機Taiwan
需要協助？
產品選型工具
快速輕鬆地為您的應用找到合適的產品和附件。
取得報價
立即線上提交您的銷售需求，專業團隊將主動聯繫您。
購買地點
輕鬆在您所在地區找到最近的施耐德電機經銷商。
支援中心
在同一位置找到滿足您所有需求的支援資源。