General Information
Module Type: Digital Output Module (Relay)

Series: SIMATIC S7-1200 (Signal Module)

Output Type: Relay (Electromechanical)

Number of Outputs: 8 channels

Rated Load Current: 2A per channel

Isolation: 1500V AC (between channels and backplane bus)

Compatible with: S7-1200 CPUs (requires TIA Portal for configuration)

Electrical Specifications
Output Characteristics:

Contact Type: SPDT (Single Pole Double Throw)

Max. Switching Voltage: 250V AC / 30V DC

Max. Switching Current: 2A per channel

Min. Switching Current: 10mA at 5V DC (for reliable contact wetting)

Switching Frequency: Max. 0.5 Hz (for resistive loads), 0.1 Hz (for inductive loads)

Mechanical Lifetime: 10 million operations (no load)

Electrical Lifetime: 100,000 operations (at rated load)

Power Supply:

Voltage Range: 24V DC (via S7-1200 backplane bus)

Power Consumption: 1W (typical)

Protection & Safety
Short-Circuit Protection: No (external protection required for inductive loads)

Surge Suppression: Built-in for inductive loads (requires external diode for DC loads)

Isolation:

Between Channels: No (common terminal for groups of 4 relays)

Between Outputs & Logic: 1500V AC

Environmental & Mechanical Specifications
Operating Temperature: -20°C to +60°C

Storage Temperature: -40°C to +70°C

Relative Humidity: 5% to 95% (non-condensing)

Vibration Resistance: 5g (10-58Hz), 1g (58-150Hz)

Shock Resistance: 15g (11ms duration)

Protection Class: IP20 (for installation in control cabinets)

Wiring & Connections
Terminal Type: Screw terminal (removable)

Wire Size: 0.25mm² to 2.5mm² (AWG 24-12)

Max. Tightening Torque: 0.5 N·m

Compatibility & Software
Supported PLCs: All SIMATIC S7-1200 CPUs

Configuration Software: TIA Portal (STEP 7 Basic/Professional)

Firmware Compatibility: V4.0 or higher recommended

Certifications & Standards
Safety Approvals: CE, UL, cULus, EAC

EMC Standards: EN 61000-6-2 (Immunity), EN 61000-6-4 (Emissions)

Applications
✔ Motor control (contactors, small motors)
✔ Solenoid valve control
✔ Relay-based switching applications
✔ Industrial automation systems
✔ Lighting control

Notes
Relay outputs are ideal for mixed AC/DC loads.

For inductive loads (e.g., contactors), use external suppression (RC network or diode).

Not suitable for high-frequency switching due to mechanical wear.