E: Isolated I/O SpecificationsIntelliBox-I/O 2100 User Guide 179Electrical CharacteristicsParameters Symbols Min Typ Max Units NotesOutput characteristics of digital I/O ports (see note 5)Continuous load current IL 100 mA 1On resistance (IL = 50 mA) RON 15 OhmLoad voltage when ON (IL = 50 mA) VL 0.75 VDCLeakage current when OFF IL 50 uAInput characteristics of digital/O ports (see note 5)High level input voltage (I I = 1 mA typically) VIH 3.0 VDC 2, 3Low level input voltage VIL 0.8 VDC 2Characteristics of relay port (see note 5)Switching voltage VRLY 250 VAC 5Switching voltage VRLY 30 VDCSwitching current (resistive load) I RLY 8 ANotes:1. Solid state relay output; can source or sink current. See Figure C-1.2. Opto-isolator with emitter input and a series resistor to limit current. See Figure C-2.3. To realize a high logic input, a typical current of II = 1mA is required; that translatesto a minimum of VIH = 3V.4. For VI = VIH > 10 VDC an external series resistor is required as shown in Table C-1.5. Connect RELAY and DIGITAL IO Ports only to Class III or Class 2 circuit.Figure C-1 Optically Isolated I/O Configured as an Output with Solid State Relay
