About Siemens S7-300 8DI8DO Expansion Module

The Siemens S7-300 8DI8DO Expansion Module is designed for industrial use, featuring a standard size and rack mount mounting type. This black module is crafted using hot rolled technique and has a polished finish for durability. With a service period of 12 months, this expansion module is ideal for enhancing the functionality of your Siemens S7-300 system.  

Data Sheet 6ES7323-1BH01-0AA0

SIMATIC S7-300, Digital Module SM 323

• Isolated module

• 8 DI / 8 DO, 24 V DC

• 0.5 A per output, total current 2 A

• Front connector: 1x 20-pole

Supply Voltage

• Load voltage L+: 24 V DC

• Permissible range: 20.4 28.8 V

• Input current:

  • From L+ (no load): max. 40 mA

  • From backplane bus 5 V DC: max. 40 mA

• Power loss (typ.): 3.5 W

Digital Inputs

• Number of inputs: 8

• Input type: DC, IEC 61131 type 1

• Simultaneously controllable inputs: max. 8

• Input voltage: 0: -30+5 V, 1: 1330 V

• Input current (typ.): 7 mA

• Input delay: 1.24.8 ms

• Cable length: shielded max. 1000 m, unshielded max. 600 m

Digital Outputs

• Number of outputs: 8

• Output current: 0.5 A (rated), 5 mA0.6 A (permissible range)

• Short-circuit protection: Yes (typ. 1 A)

• Output voltage ("1" signal): L+ - 0.8 V

• Output delay: 01 max. 100 s, 10 max. 500 s

• Switching capacity:

  • Lamp load: max. 5 W

  • Resistive load: 48 4 k

• Switching frequency:

  • Resistive load: max. 100 Hz

  • Inductive load: max. 0.5 Hz

  • Lamp load: max. 10 Hz

• Parallel switching:

  • Redundant control: Yes (only outputs of same group)

  • Uprating: No

Encoders

• Connectable: 2-wire sensor

• Max. quiescent current: 2 mA

Diagnostics / Status

• Alarms / Diagnostics: No

• LED indicators:

  • Input status (green): Yes

  • Output status (green): Yes

Isolation / Potential Separation

• Digital inputs: Between channels, in groups of 8, and to backplane bus (optocoupler)

• Digital outputs: Between channels, in groups of 8, and to backplane bus (optocoupler)

• Test voltage: 500 V DC

Connection

• Front connector: 20-pin

Dimensions & Weight

• Width: 40 mm

• Height: 125 mm

• Depth: 120 mm

• Weight: approx. 220 g

   

Technical Details