Siemens 6ES7122-1FA00-0AA0 | ET 200SP Relay Output Module

The Siemens 6ES7122-1FA00-0AA0 is a digital relay output module for the SIMATIC ET 200SP distributed I/O system. This module provides 8 isolated relay outputs for switching AC and DC loads in industrial applications. It supports switching voltages up to 230 V AC and 60 V DC for versatile field device control . Furthermore, each relay output handles continuous currents up to 2 A . The module ensures reliable switching performance for demanding automation tasks .

High-Isolation Relay Outputs

This digital output module features galvanically isolated relay outputs for enhanced system protection. The Siemens 6ES7122-1FA00-0AA0 provides 2.5 kV isolation between the channels and the backplane bus . This isolation effectively prevents electrical noise from affecting the controller . Additionally, the module includes integrated suppression circuits to reduce contact arcing . These features extend relay life and ensure reliable operation in inductive load applications .

Diagnostic and Status Indication

The module includes comprehensive diagnostic functions for real-time system monitoring . Its front panel features LED indicators for each output channel’s switching status . The Siemens 6ES7122-1FA00-0AA0 detects wire breaks and short circuits in the field wiring . When a fault occurs, the module immediately reports the status via the bus interface . This diagnostic intelligence simplifies troubleshooting and reduces maintenance time .

Technical Specifications

Parameter	Specification
Manufacturer	Siemens
Model	Siemens 6ES7122-1FA00-0AA0
Product Type	Digital Relay Output Module
Series	SIMATIC ET 200SP
Order Number	6ES7122-1FA00-0AA0
Number of Outputs	8 relay outputs
Switching Voltage	Up to 230 V AC, 60 V DC
Continuous Current	2 A per output
Isolation	2.5 kV (between channels and backplane)
Switching Frequency	10 Hz (mechanical)
Suppression	Integrated arc suppression circuits
Diagnostics	Wire break and short circuit detection
Dimensions (W x H x D)	15 x 117 x 98 mm
Weight	Approximately 0.1 kg
Operating Temperature	0 °C to +60 °C
Storage Temperature	–40 °C to +70 °C
Mounting	ET 200SP base unit

System Integration and Configuration

This relay module connects directly to the ET 200SP system via the base unit . Users can configure the module using TIA Portal or STEP 7 software . The module supports both parameter assignment and diagnostics over the backplane bus . Furthermore, it provides configurable output behavior for CPU STOP mode . This flexibility ensures predictable load states during system startup or emergencies .

Applications and Industries

The relay output module serves applications requiring switching of AC and DC loads . It commonly appears in conveyor systems, valve control, and motor starter applications . The module also supports lighting control and solenoid valve switching tasks . Its compact design makes it ideal for space-constrained control cabinets .