6ES7422-1HH00-0AA0 Siemens S7-400 Relay Output Module
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Powerful Relay Output Module for S7-400 PLCs
Control high-power devices directly with this 16-channel relay output module. The Siemens 6ES7422-1HH00-0AA0 module handles up to 5A and 230V AC. It is perfect for motors, heaters, and lamps. Each channel is a robust relay for maximum flexibility.
Why Choose This Module?
- Universal Power Control: Switch both AC (5-230V) and DC (1-60V) loads with one module.
- High Load Capacity: Strong 5A relay contacts for demanding applications.
- Clear Status Lights: Green LED for each output shows the switching state.
- Safe & Isolated: Channels are separated for safe and reliable wiring.
Key Technical Data
Brand & Series: Siemens SIMATIC S7-400
Model: Digital Output Module SM 422
Full Product Code: 6ES7422-1HH00-0AA0
Output Type: 16 Electromechanical Relay Outputs
Contact Rating: 5 A at 230 V AC / 30 V DC
Voltage Range: AC: 2-264V, DC: 1-60V
Switching Capacity: Resistive Load: 5A. Lamp Load: max. 60W.
Switching Frequency: Resistive: 10 Hz max. Inductive: 1 Hz max.
Lifetime: 100,000 electrical cycles minimum.
PLC Bus Power: 5V DC, max. 1 A.
Isolation: 1500V AC between channels and PLC.
Module Width: 25 mm
Shipping Weight: About 700 grams.
Installation Notes
Plug the module into your S7-400 rack. It needs no external power for the relays. Use the 60V DC (L+) terminal for DC loads. Use the 230V AC (L1) terminal for AC loads. Always use proper wire sizes for the 5A current. For inductive loads like motors, use external suppressors.
Warranty & Support
We offer a full 12-month warranty. This covers any faults in material or workmanship.
Shipping Info
Your order includes one Siemens 6ES7422-1HH00-0AA0 module. We ship fast using FedEx, UPS, or DHL.
Frequently Asked Questions
Q: Can I use this module to start a 3-phase motor?
A: Yes, but not directly. You can use each relay to control a separate contactor in a motor starter. This module is great for that job.
Q: What is the difference between AC and DC load connections?
A: You must connect AC loads to the L1 (AC) terminal. Connect DC loads to the L+ (DC) terminal. This keeps the internal wiring correct.
Q: How long will the relays last?
A: Expect at least 100,000 on/off cycles under full load (5A). For lighter loads, they will last much longer.
Q: Is there surge protection for inductive loads?
A: No, the module does not have built-in surge protection. For relays controlling solenoids or contactors, we strongly recommend adding an external RC snubber or varistor.
Q: Can two outputs be combined for more current?
A: No, do not parallel the outputs to get more than 5A. This is not safe or reliable. For a larger load, use a single relay to control a larger contactor.
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