描述
PLC控制着一个复杂系统，所能看到的是上下两排错开的输入输出继电器接线端子、对应的指示灯及PLC编号，就像一块有数十只脚的集成电路。任何一个人如果不看原理图来检修故障设备，会束手无策，查找故障的速度会特别慢。启动频率或突跳频率fq：空载时，步进电机由静止突然启动并进入不丢步的正常运行状态所允许的最高频率。高于启动频率，将不能正常起动。启动时的惯频特性：是指电机带动纯惯性负载时启动频率和负载转动惯量之间的关系。
Newbridge / Alcatel Control 2 Card P/N 90-6226-01
Alcatel Newbridge 90-8180-01 1 PORT STM1-2M CR CARD MAU
ALCATEL 1677SL OC-48 LINE CARD 3EM12302AA05 WMI8V06
Newbridge / Alcatel OC3-2 IR card P/N: 90-4905-21/X
Alcatel OC3C/STM1C IR I/O CARD Refurbished
Alcatel – Lucent OC-5000-1061 Omnicore Networking Card
Newbridge / Alcatel T1FR card P/N:90-2544-41/J
Newbridge / Alcatel T1FR card P/N:90-2544-41/K
Newbridge / Alcatel T1FR card P/N:90-2544-41/V
Newbridge / Alcatel T1FR card P/N:90-2544-41/U
Alcatel Qurd T1 CFR 100 OHM R4.2 Card P/N: 90-2544-61
Newbridge / Alcatel T1FR card P/N:90-2544-41/M
Newbridge / Alcatel T1FR card P/N:90-2544-41/L
Newbridge / Alcatel T1FR card P/N:90-2544-41/N
