Name: 6ES7222-1HF22-0XA0 Siemens EM 222 Relay Output Module
SKU: 6ES7222-1HF22-0XA0
Availability: InStock

Product details

6ES7222-1HF22-0XA0 | SIMATIC S7-200 Digital Output EM 222

6ES7222-1HF22-0XA0 is a digital output module for S7-22X CPUs. It provides 8 relay outputs with 2A per channel. This module is reliable for switching AC or DC loads. It is easy to install and fits the S7-200 system.

Technical Specifications

Supply Voltage (DC): 24 V (range 5-30 V)
Supply Voltage (AC): 24-230 V (range 5-250 V, 47-63 Hz)
Backplane Current: 40 mA (5 V DC)
Load Current per Output: 9 mA
Power Loss: 2 W (typical)
Digital Outputs: 8 relay outputs
Output Current per Channel: 2 A (max, 0-55 °C)
Group Current: 8 A max (all mounting positions)
Contact Life: 10 million mechanical, 100,000 at rated load
Switching Capacity: 2 A (inductive), 200 W (lamp)
Cable Length: 500 m (shielded), 150 m (unshielded)
Isolation: Yes, relay isolation in groups of 4
Dimensions (W x H x D): 45 x 80 x 62 mm
Weight: approx. 170 g

Installation & Compatibility

Mounting: Pluggable I/O terminals for easy wiring
CPU Compatibility: For S7-22X CPUs only
Short-circuit Protection: Not internal, must be provided externally
Inductive Load Shutdown: External measures required

Expert Review & Manager’s Insight

Expert Review: The EM 222 is a robust relay output module. It handles high inrush currents well. Its mechanical life is excellent. I recommend it for simple on/off control tasks. The 2A rating per channel is sufficient for most small loads.
Manager’s Insight: This module is cost-effective for expanding digital outputs. The relay design allows mixing AC and DC loads. Installation is quick with screw terminals. Keep spare modules to reduce downtime. It is a workhorse in many factories.

Frequently Asked Questions (FAQ)

Which CPUs support the EM 222?
Only S7-22X CPUs (e.g., CPU 222, 224, 226) can use this module. It does not work with other S7 families.
Can I connect AC and DC loads at the same time?
Yes, each relay output can switch AC or DC independently. Ensure the voltage stays within 5-250 V AC or 5-30 V DC.
What is the total current limit for all outputs?
The total group current is 8 A. Do not exceed this to avoid overheating. Spread loads across groups.
How do I protect the outputs from short circuits?
You need external fuses or circuit breakers. The module does not have built-in short-circuit protection.
What is the relay contact life?
Mechanical life is 10 million operations. At rated load (2A), life is about 100,000 cycles. Use external contactors for frequent switching.

Selection Guide

Choose EM 222 if you need 8 relay outputs for mixed AC/DC loads.
Select this module for S7-200 systems requiring high current switching.
Consider external protection devices for short circuits and inductive loads.
Order this unit for cost-sensitive projects with moderate switching frequency.
Use the 2A rating per channel for solenoid valves, contactors, or indicator lamps.