Siemens 6ES7222-1HF32-0XB0 SM 1222 8-Point Relay Output Module
An eight-relay S7-1200 output module rated for two-ampere contact loads under the published conditions.
Product Overview
6ES7222-1HF32-0XB0 is the SIMATIC S7-1200 SM 1222 with eight relay outputs. Siemens rates the contacts at 2 A and documents both AC and DC load-voltage ranges.
Unlike the transistor-output 1BF32 article, this module uses mechanical relay contacts. Contact life, switching frequency, load type and suppression therefore belong in the selection and maintenance record.
Siemens specifies two output groups, external short-circuit protection and a typical 4.5 W power loss for this execution.
Performance
Potential-separated switching
Uses relay contacts to switch documented AC or DC field circuits.
Two-group allocation
Organizes eight outputs into two groups whose commons and total load must be engineered.
Mechanical service boundary
Introduces contact wear and finite loaded operating cycles that do not apply to transistor outputs.
Controller command interface
Maps eight S7-1200 output commands to the approved contact circuits.
Technical Details
| Manufacturer | Siemens | Exact model | 6ES7222-1HF32-0XB0 |
|---|---|---|---|
| Module | SM 1222 DQ 8x relay/2 A | Relay outputs | 8 |
| Output groups | 2 | Rated contact current | 2 A |
| DC load-voltage range | 5 to 30 V DC | AC load-voltage range | 5 to 250 V AC |
| Maximum output delay | 10 ms on; 10 ms off | Short-circuit protection | External protection required |
| Typical power loss | 4.5 W | Mechanical operating cycles | Up to 10 million |
About IndustryParts
https://www.industryparts.com/Exact-model handling for 6ES7222-1HF32-0XB0
IndustryParts keeps the complete model label, requested quantity, application evidence and delivery requirements together so the proposed supply can be checked against the installed system before dispatch.
System Integration
Classify every circuit
Record AC/DC voltage, resistive or inductive load, inrush, protection and suppression by output.
Check group commons
Compare X10/X11 terminal allocation and both load groups with the approved Siemens wiring diagram.
Prove contact operation
Test open and closed states under supervised conditions and verify no welded or misrouted contact.
Applications
Mixed-voltage control
Switching compatible AC or DC circuits through relay contacts.
Lower-frequency actuator duty
Operating contactors, valves or indications where relay characteristics are appropriate.
Technology-preserving replacement
Maintaining dry-contact behavior in an existing S7-1200 panel.
FAQ
Q01
Can 6ES7222-1HF32-0XB0 directly replace 6ES7222-1BF32-0XB0?
+
No. Relay and transistor outputs have different voltage, timing, protection and lifetime characteristics.
Q02
What contact-load details should accompany a 6ES7222-1HF32-0XB0 enquiry?
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Provide voltage, current, load type, inrush, switching rate, suppression, fuse and output-group allocation.
Q03
Does 6ES7222-1HF32-0XB0 include short-circuit protection?
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Siemens states that short-circuit protection is not integrated and must be provided externally.
Q04
Why does output history matter for 6ES7222-1HF32-0XB0?
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Loaded relay contacts have a finite operating life, so switching duty helps assess maintenance and spare strategy.
Q05
How is 6ES7222-1HF32-0XB0 accepted after installation?
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Prove each contact state, group common, field voltage, protection and controlled machine response.
