Range of product Modicon M221 Product or component type Logic controller [Us] rated supply voltage 100...240 V AC Discrete input number 24, discrete input conforming to IEC 61131-2 Type 1 Analogue input number 2 at 0...10 V discrete output type Relay normally open Discrete output number 16 relay Discrete output voltage 5...125 V DC 5...250 V AC Discrete output current 2 A Complementary Discrete I/O number 40 Maximum number of I/O expansion module 7 (local I/O-Architecture) 14 (remote I/O-Architecture) Supply voltage limits 85…264 V Network frequency 50/60 Hz Inrush current 40 A Maximum power consumption in VA 70 VA at 100...240 V with max number of I/O expansion module 41 VA at 100...240 V without I/O expansion module Power supply output current 0.52 A 5 V for expansion bus 0.24 A 24 V for expansion bus Discrete input logic Sink or source (positive/negative) discrete input voltage 24 V discrete input voltage type DC analogue input resolution 10 bits LSB value 10 mV Conversion time 1 ms per channel + 1 controller cycle time for analogue input analog input Permitted overload on inputs +/- 30 V DC for 5 min (maximum) for analog input +/- 13 V DC (permanent) for analog input Voltage state 1 guaranteed >= 15 V for input Voltage state 0 guaranteed <= 5 V for input Discrete input current 7 mA for discrete input 5 mA for fast input Input impedance 3.4 kOhm for discrete input 100 kOhm for analog input 4.9 kOhm for fast input Response time 35 µs turn-off, I2...I5 terminal(s) for input 10 ms turn-on for output 10 ms turn-off for output 5 µs turn-on, I0, I1, I6, I7 terminal(s) for fast input 35 µs turn-on, other terminals terminal(s) for input 5 µs turn-off, I0, I1, I6, I7 terminal(s) for fast input 100 µs turn-off, other terminals terminal(s) for input Configurable filtering time 0 ms for input 3 ms for input 12 ms for input Output voltage limits 125 V DC 277 V AC Maximum current per output common 7 A