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Siemens SIMATIC S7-1200 Digital Output Module 6ES7222-1BH32-0XB0

The 6ES7222-1BH32-0XB0 is a Digital Output Module from the Siemens SIMATIC S7-1200 series. It provides 8 channels of relay output for connecting and controlling various actuator loads. This module is one of the solutions for expanding the relay output capacity of an S7-1200 CPU, suitable for controlling small contactors, relays, solenoid valves, indicator lights, and other applications requiring higher currents or mixed AC/DC loads.

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Product Description

Detailed Description:

  • Relay Output: All 8 channels on the module are relay contact outputs (normally open contacts), each capable of independent switching. The relay contacts allow direct control of both alternating current (AC) and direct current (DC) loads, offering great flexibility in load types.

  • Load Capacity: Each relay contact is rated for 2.0 A @ 230 V AC or 30 V DC, enabling direct driving of common industrial actuators without the need for additional intermediate relays.

  • Diagnostic Functions: The module supports diagnostic functions, capable of detecting loss of load voltage (L+) and reporting fault information to the CPU when necessary.

  • Electrical Isolation: There is complete electrical isolation between the relay coil side (controlled by the PLC) and the contact side (connected to the field load), providing excellent noise immunity and safety protection for the PLC system.

  • Compact Design: The module has a width of 35 mm. It mounts directly to the right side of an S7-1200 CPU or other modules via an integrated U-type connector, enabling simple installation without additional wiring.

  • Status Indication: Each output channel has an independent green LED indicator, clearly showing the output status (ON/OFF) of that point, facilitating on-site commissioning and troubleshooting.

  • Typical Applications: Widely used in small automated machines, machine control panels, packaging machines, conveyor lines, and other applications requiring control of loads at various voltage levels.

Key Specifications:

Parameter Details
Model 6ES7222-1BH32-0XB0
Series SIMATIC S7-1200
Module Type Digital Output (DO), Relay
Number of Channels 8
Output Type Relay Contacts (Normally Open)
Relay Contact Rating 2.0 A @ 230 V AC or 30 V DC (per point)
Switching Frequency Low (limited by mechanical life)
Diagnostics Loss of load voltage (L+)
Isolation Electrical isolation between relay coil and contacts
Width 35 mm
Required Engineering Software TIA Portal (STEP 7 Basic/Professional)

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