SIEMENS SM321, 32DI, AC120V 6ES7321-1BH02-0AA0

About SIEMENS SM321, 32DI, AC120V 6ES7321-1BH02-0AA0

The SM321 32DI, AC120V 6ES7321-1BH02-0AA0 is a high-quality industrial electric device in standard size and grey color. It boasts 32 digital inputs and operates at an AC power mode of 120V. This new product comes with a warranty of 1 year, ensuring reliability and longevity for industrial applications. 

SIMATIC S7-300, Digital Input SM 321, isolated, 16 DI, 24 V DC, 120-pole

Supply Voltage

Load voltage L+

• Rated value (DC): 24 V

• Permissible range, lower limit (DC): 20.4 V

• Permissible range, upper limit (DC): 28.8 V

Input Current

• From backplane bus 5 V DC, max.: 10 mA

Power Loss

• Power loss, typ.: 3.5 W

Digital Inputs

• Number of digital inputs: 16

• Input characteristic curve according to IEC 61131, type 1: Yes

Number of simultaneously controllable inputs

Horizontal installation:

• Up to 40 C: 16

• Up to 60 C: 16

Vertical installation:

• Up to 40 C: 16

Input Voltage

• Type of input voltage: DC

• Rated value (DC): 24 V

• Signal "0": 30 to +5 V

• Signal "1": 13 to 30 V

Input Current

• For signal "1", typ.: 7 mA

Input Delay (at rated input voltage)

Standard inputs:

• Parameterizable: No

• "0" "1" min: 1.2 ms, max: 4.8 ms

• "1" "0" min: 1.2 ms, max: 4.8 ms

Cable Length

• Shielded, max.: 1000 m

• Unshielded, max.: 600 m

Encoder

Connectable encoders:

• 2-wire sensor: Yes

• Permissible quiescent current (2-wire sensor), max.: 1.5 mA

Interrupts / Diagnostics / Status Information

• Alarms: No

• Diagnostics function: No

Alarms

• Diagnostic alarm: No

• Hardware interrupt: No

Diagnostics Indication LED

• Status indicator digital input (green): Yes

Potential Separation

• Between the channels: No

• Between the channels, in groups of 16

• Between the channels and backplane bus: Yes; Optocoupler

Isolation

• Isolation tested with 500 V DC

Connection Method

• Required front connector: 20-pin

Dimensions

• Width: 40 mm

• Height: 125 mm

• Depth: 120 mm

Weights

• Weight, approx.: 200 g

Technical Details