Digital modules
3.12 Digital input module SM 321; DI 16 x 24/48 VUC (6ES7321-1CH00-0AA0)
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
3-37
Technical data of SM 321; DI 16 x UC 24/48 V
Technical data
Dimensions and weight
Dimensions W x H x D 40 x 125 x 117
Weight approx. 260 g
Module-specific data
Isochronous mode supported No
Number of inputs 16
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m
Voltages, currents, electrical potentials
Number of simultaneously controlled inputs
• horizontal mounting position up to 60 °C
16
• other mounting positions up to 40 °C
16
Electrical isolation
• between channels and the backplane bus
Yes
• Between channels
in groups of
Yes
1
Permissible potential difference
• Between channels and the backplane bus
170 VDC, 120 VAC
• between inputs of different groups
170 VDC, 120 VAC
Isolation test voltage
• Between channels and the backplane bus
1500 VAC
• between inputs of different groups
1500 VAC
Current consumption
• from the backplane bus
max. 100 mA
Power loss of the module
• Operation with 24 V
• Operation with 48 V
typ. 1.5 W
typ. 2.8 W
Status, interrupts, diagnostics
Status display
Interrupts
Diagnostics functions
Green LEDs per channel
None
None
Encoder selection data
Input voltage
• Rated value
24 VDC/VAC or 48 VDC/VAC
• with "1" signal
• with "0" signal
• Frequency band
14 V to 60 V
-5 V to 5 V
0 Hz to 63 Hz
Input current
• with "1" signal
• with "0" signal
typ. 2.7 mA
-1 mA to +1 mA
Input delay
• at "1" to "0"
• at "1" to "0"
max. 16 ms
max. 16 ms
Input characteristics to IEC 61131, type 1
Connection of 2-wire BEROs supported
• Permissible quiescent current
max. 1 mA
Wiring signal transducers with 40-pin front connector
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