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一、速度继电器的接线和选型原TKD电控系统中,速度继电器的接线。DZJ—动力制动电源接触器的辅助中间继电器的接点。1vj～3vj—速度继电器,选用JT_3型直流电磁继电器。为了更好地说明问题,我们再来讨论一下动力制动在各种情况下的作用和对速度继电器的要求。 1.负力减速提升机等速运行到减速点后,切除2频三相电源,经消弧延时后立即按一定接线方式投入直流电源,进行动力制动减速。制动电流的
First, the speed of the relay wiring and selection of TKD electronic control system, the speed of the relay wiring. DZJ-dynamic brake power contactor auxiliary relay contacts. 1vj ~ 3vj-speed relay, the choice of JT_3 DC electromagnetic relay. In order to better explain the problem, let us discuss the role of dynamic braking in various situations and the requirements of the speed relay. 1. Negative deceleration The elevator runs at constant speed until the deceleration point, cut off the two-frequency three-phase power supply, and immediately after the arc suppression delay time, it will be put into the DC power supply according to a certain connection mode to perform dynamic brake deceleration. Braking current