
Product Description
Quick Procurement Facts
- Part Number: 6ES7350-2AH00-0AE0
- Description: 8-Channel High-Speed Counter Module, 500 kHz, 24 V DC / 5 V Incremental / SSI / Namur, with Compare & Cam Functions
- Condition: Factory New Sealed in Original Siemens Packaging
- Warranty: 24 months (with full counter & cam test report)
- Dispatch: 24-hour global shipping from EU/US stock
- Channels: 8 independent counters (24 V, 5 V differential, SSI absolute, Namur), 500 kHz max, 32-bit
Why 6ES7350-2AH00-0AE0 Is Still the King of High-Speed Counting in 2025
- 500 kHz per channel – handles the fastest packaging, bottling, and textile lines
- 8 channels + 8 digital outputs for electronic cam switching without extra relays
- Direct SSI absolute encoder support – perfect for rotary tables and hoists
- Still the #1 module for flying shear, rotary knife, label applicators, and flow packing machines worldwide
Typical Failure Symptoms Driving Immediate Orders
- Counter value freeze or random jumps at high speed
- OB40 diagnostic: “Overflow channel 3” or “Encoder power loss”
- Cam outputs not switching at exact position → scrap or machine crash
- SF LED red after years of 500 kHz pulses
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Siemens SIMATIC S7-300 |
| Order Number | 6ES7350-2AH00-0AE0 |
| Channels | 8 independent counters |
| Max Frequency | 500 kHz (24 V), 500 kHz (5 V diff) |
| Encoder Types | 24 V incremental, 5 V RS422, SSI, Namur |
| Counter Width | 32 bit |
| Digital Outputs | 8 × 24 V / 0.5 A (for cam switches) |
| Compare/Cam | 32 compare values + 64 cams per channel |
| Isochronous Mode | Supported |
| Power Loss | 7 W typical |
| Front Connector | 40-pin (6ES7392-1AM00-0AA0 required) |
| Dimensions (W×H×D) | 80 × 125 × 120 mm |
| Weight | 0.42 kg |
| Operating Temp | 0 to +60 °C |
Compatibility & Alternatives
- Direct successor: 6ES7350-2AH01-0AE0 (adds more cam memory)
- Modern replacement: TM Count 2x24V (ET 200SP) or 6ES7550-1AA00-0AB0 (S7-1500)
- Cross: Beckhoff EL5101 + EL5151, B&R X20CM0985