Description
热后备方式操作时，冗余的后备系统也同时运行，两者输出的结果一致时，表示系统是正常运行的；一旦结果不一致，则发出警报信号，同时，根据自诊断的结果，切换到正常的系统去。冷后备方式操作时，冷后备系统不运行，它在自诊断检测出运行系统故障后才切入后备系统。
SAFEMASTER BN5989 EMERGENCY STOP SAFETY RELAY
Safemaster Safety Relay Emergency Stop – BN5983.53
SAFEMASTER BD5980N CONTACTOR
Nice Dold Safemaster Safety Relay Emergency Stop
SAFEMASTER BN5983 EMERGENCY STOP SAFETY RELAY
