The invention brings forward a tape
machine control circuit for star preset bell
interlocking beside a tape
machine comprises a tape
machine contactor KM, a thermal
relay KH, a field preset bell HB, amachine-side / centralized selection switch SA, a machine-side
start button SBA, a machine-side stop button SBB, a first intermediate
relay KA1, a second intermediate
relay KA2 and a time relay KT, wherein the tape machine
contactor KM comprises a tape machine
contactor, a thermal relay KH, a field preset bell HB, a machine-side / centralized selection switch SA, a machine-side
start button SBA, a machine-side stop button SBB, a first intermediate relay KA1, a second intermediate relay KA2 and a time relay KT.
Machine Side Control Bit SA of
Machine Side / Centralized Selection Switch SA 1 is connecte to a 220v power supply l1, the lower end is sequentially connected with the normal closing point of the machine-side stop button SBB, SBA, the side startup button, is normally on, The normally closed point of the second intermediate relay KA2 is connected in series with one end of the coil of the first intermediate relay KA1 and the coil of the time relay KT, the normally open point of the time relay KT controls the coil of the tape contactor KM, and the first normally
open contact KA1 of the first intermediate relay KA1 is connected with the coil of the time relay KT. 1 Control tape machine site preview bell HB. It realizes the function of automatic start-up of
belt conveyor after early warning and
delay, and avoids the safety accidents caused by misoperation when the
belt conveyor starts beside the
belt conveyor.