Digital modules 
  3.29 Relay output module SM 322; DO 8 x Rel. AC 230 V; (6ES7322-1HF01-0AA0) 
S7-300 Automation System Module data 
Manual,  08/2006, A5E00105505-04 
3-97 
3.29  3.29 Relay output module SM 322; DO 8 x Rel. AC 230 V; 
(6ES7322-1HF01-0AA0) 
Order number 
6ES7322-1HF01-0AA0 
Properties 
Properties of SM 322; DO 8 x Rel. AC 230 V 
●  8 outputs, electrically isolated in groups of 2 
●  Rated load voltage 24 VDC to 120 VDC, 48 VAC to 230 VAC 
●  Suitable for AC/DC solenoid valves, contactors, motor starters, FHP motors and signal 
lamps. 
Reaction to a shutdown of the power supply 
 
 
Note 
Applicable only to SM 322; DO 8 x Rel. VAC version 1: The internal 200-ms buffer 
capacitance discharges sufficient power after power off to allow the user program to set a 
defined relay state.