Product Overview
When high-speed counting and precise position detection are critical in industrial automation, the Siemens 6ES7350-1AH03-0AE0 FM 350-1 counter module delivers reliable performance. Designed for the SIMATIC S7-300 platform, this single-channel module handles counter functions up to 500 kHz, connecting both 5 V and 24 V incremental encoders. Its isochronous mode ensures synchronization with the control cycle, reducing jitter and improving accuracy. The module includes a configuration package on CD, making setup straightforward.
Technical Specifications
Below are the key specifications for the Siemens 6ES7350-1AH03-0AE0, verified from the product database:
| Parameter |
Value |
| Supply voltage (rated) |
24 V DC |
| Permissible range (DC) |
20.4 V to 28.8 V (dynamic 18.5 V to 30.2 V) |
| Input current from load voltage 1L+ (no load) |
40 mA max. |
| Input current from backplane bus 5 V DC |
160 mA max. |
| 5 V encoder supply output current |
300 mA max. (5.2 V ±2 %) |
| 24 V encoder supply output current |
400 mA max. (1L+ -3 V) |
| Power loss |
4.5 W typ. |
| Digital inputs |
3 (gate start, gate stop, counter setting) |
| Digital outputs |
2, short-circuit protected |
| Counter input (5 V, RS 422) |
500 kHz max. counting frequency |
| Counter input (24 V) |
200 kHz max. counting frequency |
| Dimensions (W x H x D) |
40 mm x 125 mm x 120 mm |
| Weight |
Approx. 250 g |
Application Use Cases
The Siemens 6ES7350-1AH03-0AE0 excels in applications requiring high-speed counting and precise encoder feedback. In packaging lines, it monitors product flow with high frequency, enabling accurate bottle or box counts. For printing presses, it tracks shaft position via incremental encoders, ensuring register control. In material handling, it measures conveyor belt speed and distance, reducing scrap and downtime. The module's 500 kHz capability supports fast-moving parts without missing counts, directly improving throughput and ROI.
Installation and Setup
Mount the Siemens 6ES7350-1AH03-0AE0 on a standard S7-300 rail. Connect a 20-pin front connector for wiring power and signals. For 5 V encoders, use RS 422 differential inputs with the integrated 220 Ω terminating resistor. For 24 V encoders, wire to the appropriate terminals, respecting the input voltage ranges (-28.8 to +5 V for logic 0, +11 to +28.8 V for logic 1). The isochronous mode requires configuration in SIMATIC Step 7; use the included CD for configuration package. Ensure the auxiliary voltage 1L+ and load voltage 2L+ are both supplied at 24 V DC within the specified range.
Selection Guide and Purchasing Advice
Before purchasing the Siemens 6ES7350-1AH03-0AE0, verify compatibility with your S7-300 CPU and existing encoder types. The module requires one 20-pin front connector (not included). For systems without a CD drive, download the configuration package from the Siemens support site. At PLC Source PRO (ubest101.com), you can order this genuine Siemens module with confidence, backed by our inventory of industrial automation spares.