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Arrangement for the detection and / or processing of signals of electrical components that fulfill safety-related purposes or requirements for devices or systems
Arrangement for the detection and / or processing of signals of electrical components that fulfill safety-related purposes or requirements for devices or systems
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机译:满足安全相关目的或设备或系统要求的电气元件信号的检测和/或处理装置
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摘要
Each of the signal-generating emergency cutout switches, stop switches or position switches (10,12,14,16) is wired to two slave modules (e.g. 22,30) on independent buses (18,20) with master control modules (42,44). These perform cyclic interrogation of their slaves, and the results are compared (50). Any detected imbalance in the supply of energy from the separate power units (38,40) causes the machinery to be switched off and an alarm is generated. The master modules are also interfaced (46,48) to programmable controllers or process computers.
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