ABB AC 800M Controller Hardware PM891K02 Redundant Processor Unit Kit A factory-defined redundant PM891 package with two processor units plus separate data, control and CEX-Bus interconnection cables. Type Redundant Processor Kit System AC 800M / System 800xA Focus High Availability Control Brand ABB Contact: Miya Zheng Email: sales@amikon.cn WhatsApp: +86 180 2077 6792 Send RFQ Product Introduction ABB PM891K02, article 3BSE053242R1, is the redundant PM891 processor package