Siemens Simatic S7-300 - Page 64

Digital modules
3.7 Digital output module SM 321; DI 32 x AC 120 V; (6ES7321-1EL00-0AA0)
S7-300 Automation System Module data
3-16 Manual, 08/2006, A5E00105505-04
Technical data of SM 321; DI 32 x AC 120 V
Technical data
Dimensions and weight
Dimensions W x H x D (mm) 40 x 125 x 117
Weight approx. 300 g
Module-specific data
Isochronous mode supported No
Number of inputs 32
Cable length
• unshielded
• shielded
max. 600 m
max. 1000 m
Voltages, currents, electrical potentials
Number of simultaneously controlled inputs
• horizontal mounting position
up to 40 °C
up to 60 °C
32
24
• vertical mounting position
up to 40 °C
32
Electrical isolation
• between channels and the backplane bus
Yes
• between channels
in groups of
Yes
8
Permissible potential difference
• between M
internal
and inputs
120 VAC
• between inputs of different groups
250 VAC
Isolation test voltage 2500 VDC
Current consumption
• from the backplane bus
max. 16 mA
Power loss of the module typ. 4 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
• Frequency band
120 VAC
74 V to 132 V
0 V to 20 V
47 Hz to 63 Hz
Input current
• with "1'' signal
typ. 21 mA
Input delay
• at "0" to "1" transitions
• at "1" to "0" transitions
max. 15 ms
max. 25 ms
Input characteristics to IEC 61131, type 2
Connection of 2-wire BEROs
• Permissible quiescent current
supported
max. 4 mA
Wiring signal transducers with 40-pin front connector