No. SS2-AVP772-0100 Azbil Corporation 2) Case 2 (ESD Control devi..e with PST fun..tion) 2-1) System Configuration without Output Signals (Model AVP 7..2) 2-1-1) Analog current (4-20 mA) signal input Emergency Shut ..own Valve AO 4-20 mA DC IN Logic Solver IN HART Host (Emergency Shut ..own ..ignal / power supply) Figure 8. System Configuration ...... Model AVP 772 Used as ESD Device 2-1-2) ................ voltage signal (0/24 V DC) inputs ....stem configuration ...... Model AVP 792. Emergency Shut ..own Valve DO IN IN Resistance: 500 Ω 0/24 V DC (Emergency Shut ..own ..ignal / power supply) HART Host Logic Solver Figure 9. System Configuration ...... Model AVP 792 Used as ESD Device 8 ..ystem configuration ...... Model AVP772.