Siemens SIMATIC S7-300 Module data - Special Characteristic for Operation with a Safe Electrical Extra-Low Voltage

Digital Modules
3-102
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Operation with safe electrical extra-low voltage
When using relay output module 6ES7322-5HF00-0AB0 with safe and electrically
isolated extra-low voltage, take the following special characteristic into account:
If a terminal is operated with a safe and electrically isolated extra-low voltage, the
horizontally adjacent terminal must be operated at a rated voltage of not more
than 120 VUC. With operation at voltages greater than 120 VUC, the creepages
and clearances of the 40-pin front connector do not meet the SIMATIC
requirements for safe electrical isolation.
If one of the two horizontally adjacent termi-
nals is operated with a safe electrical extra-
low voltage, the adjacent terminal must be
operated at not more than UC 120 V.
Figure 3-33 Special Characteristic for Operation with a Safe Electrical Extra-Low Voltage
Technical specifications of the SM 322; DO 8 x Rel. 230 VAC/5 A
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 320 g
Data for Specific Module
Supports clocked
operation
No
Number of outputs 8
Length of cable
• Unshielded
• Shielded
max. 600 m
max. 1000 m
Voltages, Currents, Potentials
Rated supply voltage of the
electronics L +
24 VDC
• Reverse polarity protection Yes
Total current of the outputs
(per group)
• Horizontal configuration
Up to 60° C
max. 5 A
• Vertical configuration
Up to
40 ° C
max. 5 A
Isolation
• Between channels and
backplane bus
Yes
• Between the channels and
the relay supply voltage
Yes
• Between the channels
In groups of
Yes
1
Permitted potential difference
• Between M
internal
and
supply voltage of the relays
75 VDC / 60 VAC
• Between M
internal
and
supply voltage of the relays
and the outputs
250 VAC
• Between the outputs of the
different groups
500 VAC