PLC是专门为工业生产环境而设计的控制设备。当工作环境较为恶劣，如电磁干扰较强、湿度高、电源、输入和输出电路等易受到干扰时，会使控制系统的可靠性受到影响。除了为特殊工作环境而设计的PLC外，一般PLC工作的环境温度应在0~55℃的范围，并要避免太阳光直接照射；安装时要远离大的热源，保证足够大的散热空间和通风条件；空气的相对湿度应小于85%，不结露，以保证PLC的绝缘良好。PLC应避免安装在有振动的场所；对振动源允许的条件则应按照产品说明书的要求，安装减振橡胶垫或采取其他防振措施。空气中有粉尘和有害气体时，应将PLC封闭安装。
The GE Versamax IC200ALG327 is a 13 bit voltage analog output module that provides 12 analog voltage outputs, with a range of -10vdc to +10vdc (bipolar) or 0v to +10vdc (unipolar). The GE Versamax IC200ALG327 has 12 channels single ended, in one group. The GE Versamax has 250vac continuous duty ; 1500vac duty for 1 minute
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