Siemens 6ES7322-5SD00-0AB0 SIMATIC S7-300 SM 322 4xDO 24V/10mA Ex Hazardous Area PLC I/O Module

The Siemens 6ES7322-5SD00-0AB0 is a SIMATIC S7-300 SM 322 digital output module with 4 isolated outputs rated 24 V / 10 mA, built to drive actuators located in a hazardous area. It draws 160 mA from the 24 V DC load supply, is PTB tested under number Ex-96.D.2093X, and carries an [EEx ib] IIC hazardous-area marking.

Technical Specifications

Selection Notes

The higher 25.2 V open-circuit / lower 70 mA short-circuit Ex(i) envelope on this 24 V/10 mA variant gives more voltage headroom than the other SM 322 output variant's 15 V/20 mA output, which suits field actuators specified at 24 V with lower current draw rather than 15 V with higher draw — match the actuator's own entity parameters (Ui, Ii, Pi) against this module's Uo 25.2 V / Io 70 mA / Po 440 mW before pairing them. The 390 Ohm maximum load resistance is nearly double the 200 Ohm limit on the lower-voltage variant, so it tolerates longer field cable runs at rated current.