Supply voltage Load voltage L + rating (DC) 24 V permissible range, lower limit (DC) 20.4 V permissible range, upper limit (DC) 28.8 V Input current from load voltage L + (without load), max 90 mA digital outputs digital outputs 8 Number of inductive shutdown voltage limit L + (-45 V) output of the lighting load breaking capacity, maximum load resistance range of 5 W upper limit 48 Ω 3 kΩ Output voltage for signal "1" minimum L + (-0.8 to -1.6 V) Output current for signal "1" rating of 0.5 A for signal "1" permissible range of 0 to 40 ℃, the maximum value of 0.6 A for signal "1" minimum load current of 10 mA resistive load switching frequency The total maximum current inductive load, max 100 Hz 2 Hz maximum lighting load when the output of 10 Hz (each) horizontal installation up to 40 ℃, 4 A maximum of up to 60 ℃, max 3 A vertical installation up to 40 ℃, the maximum length of 4 A conductor shielded cable length, maximum 1000 m unshielded wire length, maximum 600 m alarms / diagnostics / status information Alarms Diagnostic alarm Yes; diagnosis diagnostic information can be parameterized a break is short-circuited fuse No load voltage is missing is the diagnostic LED display Rated load voltage PWR (green) No Insurance OK FSG (green) No Galvanic isolation digital outputs Galvanic isolation between channels, grouped in the channels and the backplane 8 points between bus; optocoupler Insulation Insulation test, using DC 500 V connection technology requires 20-pin front plug Dimensions Width 40 mm Height 125 mm Depth 120 mm Weight Weight about 210 g Date 2014-2-8 SIMATIC S7- 300 Digital output SM 322, optical isolation, 8 DO, 24V DC, 0.5 A (1 X 8 DO), short circuit protection, diagnosis, 20-pin