Siemens SIMATIC S7-300 Module data - Page 182

Digital Modules
3-98
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
Technical specifications of the SM 322; DO 8 x Rel. 230 VAC
Dimensions and Weight
Dimensions W x H x D
(in millimeters)
40 x 125 x 117
Weight Approx. 190 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
relay L +
24 VDC
Total current of the outputs
(per group)
max. 4 A
Isolation
• Between channels and
backplane bus
Yes
• Between the channels
In groups of
Yes
2
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
230 VAC
• Between the outputs of the
different groups
400 VAC
Insulation tested with
• Between M
internal
and
supply voltage of the relays
500 VDC
• Between M
internal
and
supply voltage of the relays
and the outputs
1500 VAC
• Between the outputs of the
different groups
1500 VAC
Current consumption
• From the backplane bus
• From supply voltage L+
max. 40 mA
max. 160 mA
Power dissipation of the module typ. 3.2 W
Status, Interrupts, Diagnostics
Status display Green LED per channel
Interrupts None
Diagnostic functions None
Data for Selecting an Actuator
Continuous thermal current max. 3 A
Minimum load voltage / current 10 V /5 mA
Short-circuit proof according to
IEC 947-5-1
2)
With circuit-breaker of
characteristic B for:
cos  1.0: 600 A
cos  0.5 to 0.7: 900
A
With Diazed 8 A fuse:
1000 A
Switching capacity and lifetime of the contacts
• For resistive load
Voltage Current No. of
switching
cyc. (typ.)
24 VDC
60 VDC
120 VDC
48 VAC
60 VAC
120 VAC
230 VAC
2.0 A
1.0 A
0.5 A
0.5 A
0.2 A
2.0 A
2.0 A
2.0 A
1.0 A
0.5 A
2.0 A
1.0 A
0.5 A
0.7 million
1.6 million
4 million
1.6 million
1.6 million
1.6 million
1.2 million
0.5 million
2)
0.7 million
2)
1.5 million
2)
0.5 million
2)
0.7 million
2)
1.5 million
• Inductive load according to IEC 947-5-1 13 DC/15 AC
Voltage Current No. of
switching
cyc. (typ.)
24 VDC
60 VDC
120 VDC
48 VAC
60 VAC
120 VAC
230 VAC
2.0 A
1.0 A
0.5 A
0.5 A
0.2 A
1.5 A
1.5 A
2.0 A
1.0 A
0.7 A
0.5 A
2.0 A
1.0 A
0.5 A
0.3 million
0.5 million
1.0 million
0.5 million
0.3 million
2)
1 million
1 million
0.2 million
0.7 million
1 million
2.0 million
0.3 million
2)
0.7 million
2)
2 million
2)
Contact protection (internal) Varistor SIOV-CU4032
K275 G
An external protection circuit will enhance the service life
of the contacts.