Digital modules
3.36 Relay output module SM 322; DO 8 x Rel. AC 230 V/5 A; (6ES7322-1HF10-0AA0)
S7-300 Module data
218 Manual, 06/2017, A5E00105505-AJ
Operation on safety extra-low voltage (SELV)
Make allowances for the special feature outlined below when operating relay output module
322-1HF10 on SELV:
To operate a terminal on SELV, the horizontally adjacent terminal may not be operated at a
rated voltage higher than 120 VUC. The creepage distances and air gaps of the 40-pin front
connector do not meet SIMATIC requirements in terms of safe electrical separation if
operated with voltages above 120 VUC.
If one of two horizontally adjacent terminals is operated on SELV, the other terminal may not be
operated at more than 120 VUC.
Technical specifications of the SM 322; DO 8 x Rel. 230 V AC / 5 A
Dimensions W x H x D (mm)
Supports isochronous mode
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m