Siemens Simatic S7-300 - Page 68

Digital modules
3.9 Digital input module SM 321; DI 16 x DC 24 V High Speed; (6ES7321-1BH10-0AA0)
S7-300 Automation System Module data
3-20 Manual, 08/2006, A5E00105505-04
Technical data of SM 321; DI 16 x DC 24 V High Speed
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight approx. 200 g
Module-specific data
Isochronous mode supported Yes
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
• vertical mounting position
up to 40 °C
16
16
Electrical isolation
• between channels and the backplane bus
Yes
Permissible potential difference
• between different circuits
• between channels
– in groups of
75 VDC / 60 VAC
Yes
16
Isolation test voltage 500 VDC
Current consumption
• from the backplane bus
max. 110 mA
Power loss of the module typ. 3.8 W
Status, interrupts, diagnostics
Status display green LED per channel
Interrupts None
Diagnostics functions None
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
Input current
• with "1" signal
typ. 7 mA
Input delay
• at "1" to "0"
• at "1" to "0"
25 μs to 75 μs
25 μs to 75 μs
Input characteristics to IEC 61131, type 1
Connection of 2-wire BEROs
• Permissible quiescent current
supported
max. 1.5 mA
Wiring signal transducers with 20-pin front connector