Digital modules
3.31 Relay output module SM 322; DO 8 x Rel. AC 230 V/5 A; (6ES7322-1HF10-0AA0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
3-109
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. When terminals are operated at voltages above 120
VUC, the creepage distances and air gaps of the 40-pin front connector do not meet
SIMATIC requirements of safe electrical isolation.
① If one of two horizontally adjacent terminals is operated on SELV, the adjacent terminal may
not be operated at more than 120 VUC.
Technical data of SM 322; DO 8 x Rel. AC 230 V/5 A
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 120
Weight approx. 320 g
Module-specific data
Isochronous mode supported No
Number of outputs 8
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m
Voltages, currents, electrical potentials
Rated power supply L+ to the relays 24 VDC
Cumulative current of outputs (per group)
• horizontal mounting position
up to 30 °C
up to 60 °C
• vertical mounting position
up to 40 °C
max. 8 A
max. 5 A
max. 5 A
Electrical isolation
• between channels and the backplane bus
Yes
• between channels
in groups of
Yes
1
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