6ES7222-1HH32-0XB0 SM 1222 16-Channel Relay Output Module 2A | Siemens

The Original New Siemens 6ES7222-1HH32-0XB0 SIMATIC S7-1200 SM 1222 Digital Output Module is a 16-channel relay output signal module designed for high-density I/O expansion in S7-1200 automation systems. It provides 16 relay outputs (2A per channel) in a single group, making it ideal for switching multiple AC/DC loads such as motors, solenoids, contactors, and indicator lamps. The relay outputs offer complete electrical isolation between the PLC logic and field-side loads, eliminating the need for external interposing relays in many applications. Fully compatible with all S7-1200 CPUs (except CPU 1211C).

Core Engineering Highlights:
16 relay outputs (normally open) | 2A per channel (resistive) | Single group of 16 outputs | 5–30V DC / 5–250V AC load voltage | 10 ms output response time | 135 mA backplane bus current | 8.5 W power loss | 24V DC rated supply | IP20 protection | –20°C to +60°C operating

Key Features:

• Original New Siemens 6ES7222-1HH32-0XB0 module

• 16 relay outputs (normally open, mechanical)

• Outputs in a single group — all 16 outputs share one common

• Wide load voltage range: 5–30V DC or 5–250V AC

• 2A per channel resistive load capacity

• 30W DC / 200W AC lamp load capacity

• 10 ms output response time (ON and OFF)

• Diagnostic alarm function

• LED status indication for each output point

• 1500V AC isolation between outputs and backplane bus

• 750V AC isolation between different circuits

• IP20 protection for control cabinet installation

• 500 m shielded / 150 m unshielded maximum cable length

• Mechanical life: 10 million cycles

• Electrical life: 100,000 cycles at rated load voltage

• Removable terminal block for simplified wiring

• No short-circuit protection — external fusing required per group

• CE, CSA, UL, cULus, FM, RCM, KC, and Marine approvals

• Wide operating temperature: –20°C to +60°C (horizontal)

Applications:

• Switching of pumps, fans, and small motors

• Actuation of solenoid valves and contactors

• Control of indicator lamps and alarms

• Interfacing with AC or DC loads up to 2A

• Expansion of S7-1200 output capacity for relay-based circuits

• Machine automation and control panel I/O expansion

• High-density relay output applications requiring 16 channels in a single module

Technical Specifications:

• Catalog Number: 6ES7222-1HH32-0XB0

• Product Type Designation: SM 1222, DQ 16x relay/2 A

• Product Family: SIMATIC S7-1200

• Outputs: 16 relay (normally open)

• Output Groups: 1 group of 16

Power Supply:

Digital Outputs (Relay):

Isolation & Protection:

Physical & Environmental:

Simultaneously Activated Outputs (Derating):

• 8 outputs (no adjacent points) at 60°C horizontal / 50°C vertical

• 16 outputs at 55°C horizontal / 45°C vertical

System Compatibility:

• Siemens SIMATIC S7-1200 controllers (all CPUs except CPU 1211C)

• S7-1200 signal modules (SM) for I/O expansion

• TIA Portal engineering framework (STEP 7 Basic / Professional)

• 24V DC control systems

Typical System Architecture:
S7-1200 CPU (e.g., CPU 1214C DC/DC/Relay)
↓
6ES7222-1HH32-0XB0 SM 1222 Relay Output Module (16 channels, 45 mm width)
│
├── Single Group (Outputs 0–15) → 10A total / 2A per channel
├── Isolated in groups of 4 → 1500V AC isolation to backplane
│
↓
Field Devices (Motors, Contactors, Solenoids, Indicator Lamps, AC/DC Loads)
↓
TIA Portal Engineering (STEP 7 Basic / Professional)

Related Products:

• 6ES7222-1HF32-0XB0 – SM 1222 8-channel relay output module (8DO relay, 2A)

• 6ES7222-1BH32-0XB0 – SM 1222 8-channel transistor output module (8DO, 24V DC, 0.5A)

• 6ES7223-1PL32-0XB0 – SM 1223 16DI/16DO relay combination module

• 6ES7214-1HG40-0XB0 – CPU 1214C DC/DC/Relay (14DI/10DO/2AI)

• 6ES7274-1XF30-0XA0 – SIMATIC Memory Card for S7-1200

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Siemens, SIMATIC, S7-1200, and TIA Portal are trademarks of Siemens AG.