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7280 Datasheet(PDF) 13 Page - PHOENIX CONTACT |
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7280 Datasheet(HTML) 13 Page - PHOENIX CONTACT |
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13 / 43 page ![]() ILB IB AI4 AO2 7280_en_02 PHOENIX CONTACT 13 5 Electrical Isolation Figure 3 Electrical isolation of the individual function areas 6 Local Diagnostic and Status Indicators Figure 4 Diagnostic and status indicators Incoming remote bus (5 V DC) Logic area and outgoing remote bus (3.6 V DC/5 V DC) Microprocessor, protocol chip Analog I/O (5 V DC/±15 V DC) Communications power (primary) 24VDC U L Initiator supply U IS Analog inputs (24 V DC) Supply of initiator supply 24VDC U S U (24 V DC) L U (24 V DC) S U1 IS U2 IS U3 IS U4 IS Analog inputs Analog outputs 7280A004 FE potential Electrical isolation between area A and B A B UL RC BA RD BUS1 BUS2 PWR E1 E2 E3 E4 1 2 7280B002 US SF AI1 AI2 AI3 AI4 AO1/2 RTD1 RTD2 RTD3 RTD4 TR Designation Color Meaning BUS UL Green Communications power RC Green Remote bus cable check BA Green Bus active RD Yellow Outgoing remote bus disabled TR Green PCP communication active PWR US Green Sensor supply SF Red Group error AI E1 to E4 Red Channel-specific error indication (sensor supply short circuit or open circuit) AO 1, 2 Yellow Analog output value is ≥ 5% of the positive measuring range final value |
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