黎明ykjd系列液位控制继电器.pdf

YKJD 12 YKJD12C 23 13 34 56a1YKJD (YKJD13)13 C(C) a1YKJD13C( )a2YKJD : 13YKJD : 13YKJD13 a1 220V 234 - ~~- ~- C C C AT AD Red 2 Red 2 Red 2 Red 2 1 White 1 White 1 White 1 White3Blue 3Blue 3Blue 3 Blue YKJD YKJD YKJD YKJD(II) YKJD LEVEL SWITCH SERIES APPLICATION EXAMPLES: 1. The figure 2 shows the application on oil tank. When the liquid level is lower than the p- osition required, the liquid level control relay YKJD acts; 1and 2are cut off, C coil of the inter mediate relay's power supply is cut off, then the motor of oil pump stops working. 2. The figure 3 is used as liquid level control alarm device on the oil tank for hydraulic sta- tion. When the liquid level is lower than the position required, the liquid level control r- elay acts; 1and3 are put through, then the alarm works. 3. The figure 4 is applied on water accumulator or some auto. control oil tanks to realize a- uto. Water or oil supplies. The figure 5 and 6 are installation diagrams with the followi- ng principle: When the liquid level is lower than a1, the liquid level control relayYKJD(I) acts(at this time, YKJD(II) is under work condition, that means 1 and 3 are put through), 1 and 3 are put through, the current passes the C coil of intermediate relay (normally o- pen contact of C is closed) to make water or oil supply motor work; When the liquid lev- el exceeds a1, the relay YKJD(I) acts; 1 and 3 are cut off, the current passes though the normally open contact C (at this time, it is still under closed state) to make water or oil supply motor continuously work; When the liquid level exceeds a2, the relay YKJD(II)a- cts; 1 and 3 are cut off, water or oil supply motor stops working, then it descends with the liquid level, YKJD(II) acts; 1 and 3are put through, but 1 and 3 of YKJD (I)are still u- nder the cut- off state, so liquid supply motor does not work yet, the liquid supply motor restarts until the liquid level descends belowa1. YKJD 1 4- M4 () L7045 1 L35 II 35 4- M8X40 60 75 30 90 I 50 () II I 54 INTRODUCTION AND WORK PRINCIPLE This level switch is a new type fluid level indicator. It can be used for auto controlling or alarming of fluid level in a tank or electric motor.During operation, the float will rise or f- all down with to the level of fluid in a tank. As the float rises or falls down to the level point preset for alarming or stopping the motor, the level switch will act, the normally open close. 36(M362) 55 42 YKJD- *- *- *- *- Z14 Z14(1) YKJDQ- *- *- *- *- Z14 Z14(1) 45 60 75 90 YKJD () YKJDQ () 36(M362) 55 42 42 7ba1a2a3 ba1a2a3 ba 800mmYKJD24- 800 b 1 a 1000mm2a500mm3a350mmYKJD24- 1000- 500- 350 TECHNCAL DATA 1 Temperature range(): - 20+100 2 Time of motion(ms): 1.7 3 Contact resistance(): 0.1 4 Contact capacity:DC24(V)0.2(A) AC220(V)0.02(A) 7 5 Life: ()10 MODEL CODE YKJD 24 *** 3 Third level L3(mm) 2 Second level L2(mm) 1 First level L1(mm) Voltage:24=DC:24V 220=AC:220V YKJD Level switch BH water- glycol Omit if use hydraulic oil Q: Light Series Omit if standard series 90mm 7 5 6 YKJD(II) YKJD(II) YKJD(I) YKJD(I) a2 a1 a1 a2 1 3 1 2 4 37 2 5 1 4 7 6 5 6 1 YKJDQ24-* *- *- Note: The length desired refers to the figure 7,B is the cover plate top of oil tank, a1, a2, a3are liquid level sign- altrans- mitting positions, the user can select the length from b to a1, a2, a3 according to the use condition. Example: (1)use one- point liquid level control relay to control the liquid level: When the distance from the cover plate b of oil tank to the liquid level signal- transmitting desired position is 800mm, the order model is YKJD24- 800. (2)use multi- point liquid level control relay to control the liquid level: When the distance from the cover pla- te b of oil tank to the first point a of desired liquid level is 1000mm, to the second point a is 500mm and to the third point a is 350mm, the order model is YKJK24- 1000- 500- 350. If more control points are necessary, the model can be on the analogy of this. ()(YKJD) 7L3L2(90mm) (1) (2) YKJD a3 a2 a1 L3 L2 L1 Z14Z14(1) 。