Product Description
6ES7422-1FH00-0AA0 | Siemens SM 422 is a 16-channel digital output module for the SIMATIC S7-400 system. It delivers 120/230 V AC, 2 A per channel with fuse protection per group. The module supports high-voltage AC loads and provides robust isolation for industrial environments.
Key Features & Benefits
- 16 digital outputs – 120/230 V AC, 2 A rated, surge current up to 50 A
- Short-circuit protection – fuse 8 A, 250 V per group (quick response)
- Galvanic isolation – 1500 V AC tested, groups of 4 channels isolated
- Wide voltage range – 79 V … 264 V AC, 47 … 63 Hz
- High lamp load capacity – max. 50 W per output
- Diagnostic LEDs – fuse blown (INTF) and missing load voltage (EXTF)
Technical Specifications
| Brand | Siemens |
| Model | 6ES7422-1FH00-0AA0 |
| Product type | SM 422 Digital Output Module |
| Supply voltage | 120/230 V AC (79 … 264 V, 47 … 63 Hz) |
| Input current (no load) | ≤ 1.5 mA from L1; ≤ 400 mA from backplane |
| Power loss | typ. 16 W |
| Output current | 2 A rated, 10 mA min, 2 A max, surge 50 A |
| Residual current (“0”) | ≤ 2.6 mA |
| Switching freq. (resistive) | 10 Hz |
| Switching freq. (inductive) | 0.5 Hz |
| Lamp load | max. 50 W |
| Group current (40 °C) | 4 A (6 A with fan) per group of 4 outputs |
| Group current (60 °C) | 2 A (5 A with fan) per group of 4 outputs |
| Cable length (shielded) | 1000 m |
| Cable length (unshielded) | 600 m |
| Isolation voltage | 1500 V AC tested |
| Dimensions (W x H x D) | 25 x 290 x 210 mm |
| Weight | approx. 0.8 kg |
Installation & Mounting
- Snap-on mounting onto S7-400 rack (UR1/UR2).
- Connect load voltage L1 (120/230 V AC) to terminal block.
- Use shielded cables for runs > 600 m.
- Respect group current limits – 4 A per 4-channel group at 40 °C.
- Install fan assembly for higher current – up to 6 A per group.
Diagnostics & Status Indication
- INTF LED (red) – indicates fuse blown (internal fault).
- EXTF LED (red) – indicates missing load voltage (external fault).
- Diagnostics not parameterizable – simple hardware fault indication.
- Quick visual check reduces troubleshooting time.
Compatibility & System Integration
- Compatible with SIMATIC S7-400 CPUs (412, 414, 416, 417).
- Integrates with PCS 7 and TIA Portal via STEP 7.
- Supports redundant control – parallel two outputs with same voltage.
- Can directly control motor starters up to NEMA Size 5.
Environmental & Immunity
- Operating temp: 0 … 60 °C (derating above 40 °C).
- Storage temp: -40 … +70 °C.
- Humidity: 5 … 95 % RH non-condensing.
- EMC immunity: EN 61000-6-2 (industrial environment).
- Protection class: IP20 – suitable for control cabinet.
Certifications & Standards
- CE marked – complies with EU directives.
- UL/cUL recognized (File E192450).
- FM approved for hazardous locations Class I, Div. 2.
- RoHS and REACH compliant.
Package Contents
- 1x SM 422 module (6ES7422-1FH00-0AA0)
- 1x front connector (screw-type, 40-pin)
- 1x label strip for channel designation
- 1x spare fuse kit (8 A, 250 V quick)
- 1x manual (digital download)
Typical Applications
- AC valve and actuator control in chemical plants.
- Motor starter control (NEMA Size 5) in oil & gas.
- Lamp loads and signaling devices in power stations.
- HVAC systems and conveyor drives.
Frequently Asked Questions (FAQ)
Q: Can I use this module with 110 V AC?
A: Yes. The module accepts 79 … 264 V AC (47 … 63 Hz).
Q: What happens if the fuse blows?
A: The INTF LED turns red. Replace the 8 A quick fuse per group.
Q: Can I parallel two outputs for more current?
A: Yes, for redundant control only with same load voltage. Do not parallel for higher current.
Q: Is diagnostics parameterizable?
A: No. Diagnostics are hardware-based via LEDs – simple and reliable.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipping – via FedEx, UPS, or DHL express.
- Tested surplus/refurbished – fully verified and functional.
- 12-month warranty – covers defects and performance.
- Technical verification – each unit checked before shipment.
- Support for obsolete systems – we source hard-to-find parts.
Contact: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)
Shipping: FedEx, UPS, DHL – worldwide door-to-door. Express delivery available.
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Original Source: https://www.oiltechcontrols.com/
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