Overview
The Baumer IFFM 20P17A3/S35L is a rectangular inductive proximity switch engineered for precise metallic object detection in industrial automation. This sensor delivers an 8mm nominal sensing distance, making it ideal for tight mounting spaces and compact control applications. With PNP make-function (N/O) output logic, the IFFM 20P17A3/S35L integrates seamlessly into modern controls architectures while maintaining proven Baumer reliability across demanding operating conditions.
Key Features
- 8mm Nominal Sensing Distance (Sn) — Compact detection range suitable for tight installations and small target detection
- PNP Make Function (NO) — Direct compatibility with standard PLC and control module digital inputs
- M8 Connector — Industry-standard M8 plug-and-play connection; no hard-wired installation required
- Flush Mount Rectangular Design — 20mm width, 32mm length; fits standard mounting profiles and automation frames
- IP67 Protection — Sealed design resists dust, coolant spray, and moisture ingress in production floor environments
- Extended Temperature Range — Rated -25°C to +75°C for both heated and refrigerated industrial spaces
- Red LED Output Indicator — Visual switching status confirmation without separate diagnostic equipment
- Short Circuit & Reverse Polarity Protection — Built-in protection extends component lifespan in variable electrical conditions
Technical Specifications
Key operating parameters and electrical ratings:
- Nominal Sensing Distance: 8mm
- Hysteresis: 3 to 20% of Sr
- Output Type: PNP make function (N/O)
- Switching Frequency: 500 Hz
- Voltage Supply: 10 to 30 VDC
- Current Consumption (no load): 10 mA max.
- Output Current (max.): 200 mA
- Voltage Drop (Vd): <2 VDC
- Design: Rectangular, flush-mount
- Housing Material: Brass, nickel-plated
- Sensing Face Material: PBT plastic
- Connector: M8, 3-pin standard industrial
- Operating Temperature: -25°C to +75°C
- Protection Class: IP67
Typical Applications
The IFFM 20P17A3/S35L is widely deployed in:
- Assembly line metal part positioning and presence detection
- Conveyor systems, sorting and gate control applications
- Press brake and stamping machine workpiece detection
- Automated packaging and filling equipment
- CNC spindle load/unload monitoring
- Automotive and tier-1 supplier production cells
- Machine tool automation with tight sensor spacing requirements
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, SLC 500, MicroLogix digital input modules
- Siemens S7-1200, S7-1500 PLC (via standard 24 VDC digital input cards)
- Mitsubishi FX, Q-series PLCs with 10-30 VDC input capability
- Omron CP, NJ-series controllers
- Schneider Electric Modicon, M241, M251 PLCs
- Direct connection to 24 VDC industrial control power supplies
- Standard industrial I/O terminal blocks and DIN-rail mounted input modules
Replaces / Drop-In Replacement For
- IFFM 20N17A3/S35L — Baumer NPN version (same mechanical/electrical envelope, different logic)
- IFFM 20P17A4/S35L — Higher-range variant with extended sensing distance
- Other rectangular 8mm inductive sensors with M8 connectors and PNP output (verify pinout before substitution)
Works With
- PLC Ladder Logic (Studio 5000, TIA Portal, GX Works, Sysmac Studio) — standard digital input instruction blocks
- EtherNet/IP networks (via industrial Ethernet gateways with discrete I/O modules)
- PROFINET automation systems (same pinout compatibility through standard interface modules)
- Standalone 24 VDC relay logic and hardwired control circuits
- IO-Link connectivity via optional M8 IO-Link adapters (check availability with Baumer for this model)
