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