Siemens 6ES7223-1PH32-0XB0 SM 1223

Compact Mixed I/O for S7-1200 Systems

This signal module provides a balanced mix of digital inputs and outputs for S7-1200 controllers. It combines 8 inputs and 8 outputs in a single compact housing. Many machine builders choose this unit for space-efficient discrete control solutions. The module delivers reliable performance for standard automation tasks.

Technical Specifications

Parameter	Specification
Model	6ES7223-1PH32-0XB0
Dimensions	45 mm × 100 mm × 75 mm (W × H × D)
Weight	0.20 kg
Power Supply	24 V DC (from backplane)
Power Consumption	2.0 W typical
Digital Inputs	8 channels (24 V DC)
Input Voltage Range	0 V to 30 V DC
Input ON Threshold	≥ 15 V DC
Input OFF Threshold	≤ 5 V DC
Input Current	4 mA typical at 24 V DC
Input Delay	0.2 ms to 12.8 ms (programmable)
Digital Outputs	8 channels (relay)
Output Type	Relay (form-A, normally open)
Output Current	2 A per channel (continuous)
Output Surge Current	5 A for 4 seconds
Switching Voltage	250 V AC / 30 V DC maximum
Output Protection	Snubber circuit (external)
Status Indicators	16 LED indicators (one per channel)
Terminal Type	Push-in spring terminals
Wire Gauge	0.2 mm² to 1.5 mm²
Operating Temperature	0°C to +55°C
Storage Temperature	-40°C to +70°C
Humidity Range	5% to 95% RH (non-condensing)
Protection Class	IP20
Certifications	CE, UL, cULus, ATEX, FM

Input Channel Configuration

This module provides 8 digital inputs for 24 V DC signals. Each input accepts voltages from 0 V to 30 V DC without damage. A programmable input delay filters noise from 0.2 ms to 12.8 ms. This flexibility accommodates both fast and slow-switching applications.

Output Channel Design and Load Handling

Eight relay outputs provide normally open contacts for load switching. Each relay carries 2 A continuous current at up to 250 V AC. The contacts handle surge currents of 5 A for 4 seconds. This capacity supports solenoid valves, contactors, and indicator lamps.

Mixed I/O Flexibility

The balanced 8-in/8-out configuration suits many typical applications. Users can connect sensors directly to the input side. The outputs drive actuators without additional relay panels. This integration reduces cabinet space and wiring complexity.

Input Filtering and Signal Conditioning

Programmable input delays prevent false triggering from electrical noise. Users select delay values between 0.2 ms and 12.8 ms per channel. Longer delays suit switch debouncing in contact applications. Shorter delays support high-speed counter and interrupt functions.

Output Protection and Load Considerations

Relay outputs require external snubber circuits for inductive loads. These components protect contacts from arcing during de-energization. Proper protection extends contact life significantly. Users should size snubbers according to connected load characteristics.

Mechanical Construction and Physical Attributes

This module measures 45 mm wide and weighs just 0.20 kg. Push-in spring terminals simplify field wiring and reduce installation time. The compact footprint saves valuable panel space. Installation uses the S7-1200 backplane for power and communication.

Status Indication and Visual Feedback

Sixteen LEDs indicate the status of each input and output channel. Green LEDs show active inputs and outputs at a glance. This direct visibility assists operators during commissioning. Technicians can quickly verify I/O states without external tools.

Certifications and Regulatory Compliance

The 6ES7223-1PH32-0XB0 holds CE, UL, cULus, ATEX, and FM certifications. These approvals permit deployment in industrial and hazardous environments. Each module undergoes quality testing before shipment. This commitment ensures reliable field performance.