有时PLC或其它控制器的开关量输入由于受外界干扰影响而瞬间输入错误,导致PLC产生误动作,这时在PLC的输入端并上一个0.1uF的小电容就可以消除这种干扰,如下图所示:3500/15-02-02-00
六、电气电路控制失灵
用按钮和开关起停较远处交流电机(或设备)时,有时想停却停不了,电路如图所示:
由于开关K离接触器KM较远,两根电线很长导致其分布电容C将变得很大,在交流电路中,这个分布电容中将有位移电流流过,即使开关K断开也可能因KM维持能量不需太大而导致KM不释放,设备停不下来,此时,可以按以下方法解决:
用直流信号远控;
在交流接触器KM的线圈上并一个电灯或电阻,使分布电容流过的电流不足以维持线圈的吸合。
FBM211
FBM241c
FBM241 RANCO V26-141-40 61-19446-01
GE CR151KBC01AE
CUTLER-HAMMER 14102A6517-PS
SCHAFFNER FN351-36-33
FESTO QSR-M5-4
TSUBAKI BS-12B
YASKAWA PG-X2
TORK-MATE POSI-FLATE 690 PNEUMATIC ACTUATOR RPC250 1054610
ZOOK 8" GRAPHITE RUPTURE DISK 1MY1J2X8X0.5X200 95694.020 BR12400PMXT/11
IMO AB GAS-04001-1008 500422
ABB K7AS
EATON HMIEC1612
CUTLER-HAMMER A202K1CA
ALLEN-BRADLEY 2093-AMP1 2093-PRS8S
SMC NCDY2S6H-0300-F7PVZ
ABB 500S1360
CUTLER-HAMMER 5ACLS-6R
ITT / NEO-DYN 117P52C6
PILZ PNOZ5-24VWS-2S 474591 102728
WATTSTOPPER / LEGRAND MRRC3-G
GE CR1062S6A
ARCHITECTURAL 301-56-01
SMC VV4Z1-06-X256
C.J. ANDERSON & CO. HG-2
SANYO DENKI 103H5505-70EG2
PHOENIX 2943709 CM90-PS-230AC/24DC/2
WOLF LINDE 1/2" 5791
ALLEN-BRADLEY 1492-ACABLE015UD
CORD GRIPS 5X455
BRAD HARRISON / WOODHEAD 803P603
SERVOMEX 3953-3531 3933531 1100/925B 01100925 1100925
ASCO TN10B21
FOXBORO C0131MA
BENTLY 330171-XX-XX-10-02-05 142824-135
BENTLY 330171-XX-XX-10-02-05 142824-131
GE CR305R102AEA
MILLIPORE OPTICAP XL5 CAPSULE KR10A05FF1 C4DA53683
OMRON 3G2A6-DUM01
GOULDS SHAFT R104-733 2338 4500-36-37
TSUBAKI ROLLER CHAIN RS50-2-RP-U RS502RPU A110107 10 FEET 3.048 M 192 linkS
NIBCO GLOBE VALVE T-256-AP
POWER PC-7251-L
ALLEN-BRADLEY 1336F-LA1
FBM206
FCM10E
FCM10Ef
FCM100Et