SBS / Bit3 406-202 VME SBUS TO A32/D32 VMEBUS WITH DMA CONTROLLER
2.8驾驶室六面体密封驾驶室的前、后窗和两侧门玻璃均带有雨刷，后窗为活动拉窗。可选装无氟冷暖空调或排气加热供暖系统，以及新鲜空气交换系统，国内推土机独采用的活性碳纤维过滤除臭装置。模拟量控制的速度链20纪70年代，用于造纸机分部传动的可控硅传动装置及后来的KGSA系列分部传动纸机用整流设备，其中的速度链控制器均由两运算放大器组成如）。而实际上，在造纸厂，总车速电位器！。及所有分部微调电位器！……！"均在造纸机操作侧的操作台上，而速度链控制器及可控硅调速装置又在造纸机传动侧的控制室内。这样，长距离的电位器引线，即使使用屏蔽线也难免受干扰，而且，电位器本身的阻值也容易受环境温度影响而发生变化。另外，电位器动触点的氧化接触问题及运算放大器FC52的温漂“、‘时漂”等问题，都将造成给定电压的漂移，而使车速不稳，发生断纸现象。这种由电位器调节给定，由运算放大器组成的速度链根本无法胜任高速、薄页及纤维强度较差的非木材浆料分部传动造纸机。
3用PLC实现数字速度链随着微电子技术的不断发展，全数字直流调速器、交流变频器及可编程控制器PLC也在不断的得到应用和普及。目前，不少造纸机制造厂商及不少造纸厂都在利用这些进的电气产品纸机的电气传动进行更新设计或改造。
PLC的配置根据造纸机分部传动的分部数及控制点可灵活配置，现采用的PLC为OMRON公司的C200HG-CPU43，将原操作台上的总车速及各分部微调电位器改为用升、降速按钮矸关量信号）控制，并接入控制房内的PLC输入模块C200H-ID22，然后经CPU按各分部速度的比例运算，后由D/A数模转换模块C200H-DA003C200H-DA002）完成运算结果的输出，作为各分部传动点的速度给定。
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