Siemens 6ES7222-1HF32-0XB0 SIMATIC S7-1200 SM1222 8DO Relay 2A PLC I/O Module

The Siemens SIMATIC S7-1200 SM 1222 (6ES7222-1HF32-0XB0) is a relay digital output module with 8 outputs rated 2 A each, switching 5 - 30 V DC or 5 - 250 V AC loads directly from an S7-1200 station. Contacts handle 10 million mechanical cycles, or 100,000 at rated load, switching up to 30 W DC or 200 W AC lamp loads in a 45 x 100 x 75 mm, 0.174 kg IP20 housing.

Technical Specifications

Certifications & Standards

• CE mark
• CSA approval
• UL approval
• cULus
• FM approval
• RCM
• KC approval
• Marine approval

Selection Notes

Relay outputs switch AC loads directly, up to 250 V AC at 200 W lamp load, which a transistor DO module can't, at the cost of a mechanical life limited to 100,000 cycles at rated load versus millions of cycles for solid-state switching. Choose the transistor-output SM 1222 variant in the same family instead for high-cycle-rate DC loads where contact wear would be the limiting factor.

Applications

Switches mixed AC/DC loads directly from an S7-1200 station, including contactor coils, indicator lamps, and small motor starters, without an external interposing relay.