About

Manufacturer SeriesS7 1200 Communication ProtocolsRS232Output Type Digital Mounting Type Stand-alone SIMATIC S7-300, Digital output SM 322, isolated, 16 DO, 24 V DC, 0.5A, 1x 20-pole, Total current 4 A/group (8 A/module)SIEMENS PLC MODULES 6ES7322 1BH01 0AA0 

SIMATIC S7-300 – Digital Output Module SM 322

• Article No: 6ES7322-1BH01-0AA0
• Type: Isolated, 16 DO, 24 V DC, 0.5 A per channel
• Connector: 1 × 20-pole
• Total current: 4 A/group (8 A/module)

Supply Voltage

• Rated value (L+): 24 V DC

• Permissible range: 20.4 … 28.8 V DC

• Input current:

  • From L+ (no load): max. 80 mA

  • From backplane bus (5 V DC): max. 80 mA

Power loss: typ. 4.9 W

Digital Outputs

• Number of outputs: 16

• Short-circuit protection: Electronic, typ. 1 A

• Inductive shutdown voltage limitation: -53 V

• Controllable via digital input: Yes

Switching capacity:

• Lamp load: max. 5 W

• Load resistance: 48 Ω … 4 kΩ

• Output voltage “1”: min. L+ - 0.8 V

• Output current “1”: 0.5 A rated

• Permissible current (0–40 °C): 5 mA … 0.6 A

• Permissible current (40–60 °C): 5 mA … 0.6 A

• Minimum load current: 5 mA

• Residual current “0”: max. 0.5 mA

Output delay (resistive load):

• 0 → 1: max. 100 μs

• 1 → 0: max. 500 μs

Switching frequency:

• Resistive load: max. 100 Hz

• Inductive load: max. 0.5 Hz

• Lamp load: max. 10 Hz

Parallel switching:

• Redundant load control: Yes

• Uprating: No

Total current per group (horizontal installation):

• Up to 40 °C: 4 A

• Up to 60 °C: 3 A

Vertical installation:

• Up to 40 °C: 2 A

Cable Length

• Shielded: max. 1,000 m

• Unshielded: max. 600 m

Diagnostics / Status

• Diagnostic function: No

• Alarms: No

• LEDs:

  • Status indicator digital output: Yes (green)

Potential Separation & Isolation

• Between channels: Yes (groups of 8)

• Between channels and backplane bus: Yes (Optocoupler)

• Isolation tested: 500 V DC

Connection

• Required front connector: 20-pin

Dimensions & Weight

• Width: 40 mm

• Height: 125 mm

• Depth: 120 mm

• Weight: 190 g

Technical Details