This Zelio Logic SR2 compact smart relay / programmable controller uses a supply voltage of 24V direct current. It has 10 inputs / outputs with screw-clamp terminals and has an integrated LCD display. It has compact design, allowing installation on DIN rail. It also offers simple programming, display and diagnosing of malfunctions display and navigation buttons. Its simple ladder programming makes it adapted for non-specialists. Specifications Main range of product Zelio Logic Product or component type Compact smart relay Complementary Local display With Number or control scheme lines 0…240 ladder Cycle time 6…90 ms Backup time 10 years 77 °F (25 °C) Clock drift 12 min/year 32…131 °F (0…55 °C) 6 s/month 77 °F (25 °C) Checks Program memory on each power up [Us] rated supply voltage 24 V DC Supply voltage limits 19.2…30 V Maximum supply current 100 mA without extension) Power dissipation in W 3 W without extension Reverse polarity protection With Discrete input number 6 IEC 61131-2 Type 1 discrete input type Resistive Discrete input voltage 24 V DC Discrete input current 4 mA Counting frequency 1 kHz discrete input Voltage state 1 guaranteed >= 15 V I1...IA and IH...IR discrete input circuit >= 15 V IB...IG used as discrete input circuit Voltage state 0 guaranteed <= 5 V I1...IA and IH...IR discrete input circuit <= 5 V IB...IG used as discrete input circuit Current state 1 guaranteed >= 1.2 mA IB...IG used as discrete input circuit) >= 2.2 mA I1...IA and IH...IR discrete input circuit) Current state 0 guaranteed <= 0.5 mA IB...IG used as discrete input circuit) <= 0.75 mA I1...IA and IH...IR discrete input circuit) Input compatibility 3-wire proximity sensors PNP discrete input analogue input number 0 Input impedance 12 kOhm IB...IG used as analogue input circuit 12 kOhm IB...IG used as discrete input circuit 7.4 kOhm I1...IA and IH...IR discrete input circuit Number of outputs 4 relay Output voltage limits 24...250 V AC relay output) 5...30 V DC relay output) Contacts type and composition NO relay output Output thermal current 8 A for all 4 outputs relay output Electrical durability AC-12 500000 cycles 230 V, 1.5 A relay output IEC 60947-5-1 AC-15 500000 cycles 230 V, 0.9 A relay output IEC 60947-5-1 DC-12 500000 cycles 24 V, 1.5 A relay output IEC 60947-5-1 DC-13 500000 cycles 24 V, 0.6 A relay output IEC 60947-5-1 Switching capacity in mA >= 10 mA 12 V relay output) Operating rate in Hz 0.1 Hz at Ie)relay output 10 Hz no load)relay output Mechanical durability 10000000 cycles relay output [Uimp] rated impulse withstand voltage 4 kV EN/IEC 60947-1 and EN/IEC 60664-1 clock Without Response time 10 ms from state 0 to state 1)relay output 5 ms from state 1 to state 0)relay output Connections - terminals Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) semi-solid Screw terminals, 1 x 0.2...1 x 2.5 mm² AWG 25...AWG 14) solid Screw terminals, 1 x 0.25...1 x 2.5 mm² AWG 24...AWG 14) flexible with cable end Screw terminals, 2 x 0.2...2 x 1.5 mm² AWG 24...AWG 16) solid Screw terminals, 2 x 0.25...2 x 0.75 mm² AWG 24...AWG 18) flexible with cable end Tightening torque 4.43 lbf.in (0.5 N.m) Overvoltage category III IEC 60664-1 Net weight 0.55 lb(US) (0.25 kg)