Siemens SIMATIC S7-300 Manual page 72

Digital modules
3.10 Digital input module SM 321; DI 16 x 24 VDC; with hardware and diagnostic interrupts (6ES7321-7BH01-
0AB0)
Technical data
Number of simultaneously controlled inputs
horizontal mounting position
•
up to 60 °C
vertical mounting position
•
up to 40 °C
Electrical isolation
between channels and the backplane bus
•
between channels
•
– in groups of
Permissible potential difference
between different circuits
•
Isolation test voltage
Current consumption
from the backplane bus
•
from load voltage L + (without encoder supply V
•
Power loss of the module
Status, interrupts, diagnostics
Status display
Inputs
•
Encoder supplies (Vs)
•
Interrupts
Hardware interrupt
•
Diagnostic interrupt
•
Diagnostics functions
Group error display
•
Reading diagnostics information
•
Monitoring of
Wirebreak
•
Encoder supply outputs
Number of outputs
Output voltage
on load
•
Output current
Rated value
•
Permissible range
•
Additional (redundant) supply
Short-circuit protection
Transducer selection data
Input voltage
Rated value
•
for "1" signal
•
for "0" signal
•
3-24
16
16
Yes
16
75 VDC / 60 VAC
500 VDC
max. 130 mA
)
max. 90 mA
S
typ. 4 W
green LED per channel
green LED per output
programmable
programmable
programmable
red LED (SF)
supported
yes, sensing I < 1 mA
2
min. L+ (- 2.5 V)
120 mA
0 mA to 150 mA
supported
Yes, electronic
24 VDC
13 V to 30 V
-30 V to +5 V
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04