IES Series User Manual V. 2.0 8Chapter 2 Hardware functionality2.1 Main functions2.1.1 Power Input Interface and InstallationPower Terminal BlockThe IES-MCG-SFP & IES-2205 features a single 24V DC power input with one V+ power anode and one V-power cathode.See Figure 2-2.Fig. 2-2The IES-2206, IES-2208, IES-2210, IES-2212, IES-2216, and IES-2220 all feature redundant power connectorswith dual V+ power anodes and V- power cathodes. See Figure 2-3.Fig. 2-3When using only one power supply make sure to connect the supply to the V1+ and V1- terminals.Power conductor diameter should be less than 1.5mm to fit the screw terminals.