{"product_id":"fs-n42n-keyence-fs-n40-fiber-optic-sensor-amplifier","title":"FS-N42N Keyence FS-N40 Fiber Optic Sensor Amplifier","description":"\u003ch2\u003e\u003cstrong\u003eFS-N42N Keyence FS-N40 Digital Fiber Optic Sensor Amplifier (NPN, Expansion Unit)\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Keyence; Model: \u003cstrong\u003eFS-N42N\u003c\/strong\u003e; Series: FS-N40\u003c\/li\u003e\n\u003cli\u003eUnit role: expansion unit with one NPN control output\u003c\/li\u003e\n\u003cli\u003eOutput type: open-collector, 30 V max, 100 mA max per output\u003c\/li\u003e\n\u003cli\u003eResponse time options: 23 µs (S-HSPD) through 64 ms (TERA)\u003c\/li\u003e\n\u003cli\u003eLight source: red four-element LED at 660 nm wavelength\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 10 to 30 VDC with 10% ripple P-P or less\u003c\/li\u003e\n\u003cli\u003ePower consumption: 870 mW or less (34 mA at 24 V)\u003c\/li\u003e\n\u003cli\u003eECO modes lower draw to 800 mW (ECO ON) and 710 mW (ECO FULL)\u003c\/li\u003e\n\u003cli\u003eWeight: approximately 48 g; cable type connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePerformance and Environmental Tolerance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEight selectable response speeds cover high-speed and slow-response applications.\u003c\/li\u003e\n\u003cli\u003eThe 23 µs setting suits small-part detection and fast registration tasks.\u003c\/li\u003e\n\u003cli\u003eThe 64 ms setting stabilizes readings on low-contrast or moving targets.\u003c\/li\u003e\n\u003cli\u003eOperating temperature range spans -20 to +55 °C without freezing.\u003c\/li\u003e\n\u003cli\u003eThermal limits derate as you add more units to the chain.\u003c\/li\u003e\n\u003cli\u003eResidual voltage stays at 1.4 V at 10 mA for clean signal transfer.\u003c\/li\u003e\n\u003cli\u003eResidual voltage reaches 2 V across the 10–100 mA load range.\u003c\/li\u003e\n\u003cli\u003eStable LED output resists ambient light interference in production areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eExpansion and Installation Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLink the expansion unit to a main amplifier before powering the system.\u003c\/li\u003e\n\u003cli\u003eCombine up to 16 expansion units for 17 amplifiers in total.\u003c\/li\u003e\n\u003cli\u003eA dual-output model counts as two units within the expansion limit.\u003c\/li\u003e\n\u003cli\u003eMount the cable-type unit on a DIN rail or bracket near the sensing point.\u003c\/li\u003e\n\u003cli\u003eFeed the unit from a 10–30 VDC Class 2 or LPS supply.\u003c\/li\u003e\n\u003cli\u003eHold supply ripple at 10% P-P or less to protect measurement stability.\u003c\/li\u003e\n\u003cli\u003eKeep output wiring separate from high-current lines to reduce noise.\u003c\/li\u003e\n\u003cli\u003eReview parameters on the OLED display after each channel change.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Keyence \u003cstrong\u003eFS-N42N\u003c\/strong\u003e expansion amplifier unit\u003c\/li\u003e\n\u003cli\u003e1 × Instruction manual\u003c\/li\u003e\n\u003cli\u003e1 × Mounting bracket and hardware set\u003c\/li\u003e\n\u003cli\u003eProtective packaging for safe transport\u003c\/li\u003e\n\u003cli\u003eShipping via FedEx, UPS, or DHL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can the FS-N42N work without a main unit?\u003c\/strong\u003e\u003cbr\u003eA: No, this expansion unit needs a main amplifier such as the \u003cstrong\u003eFS-N41N\u003c\/strong\u003e to operate and display settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How many units can I chain together?\u003c\/strong\u003e\u003cbr\u003eA: You can connect up to 16 expansion units, giving 17 amplifiers total. A dual-output unit counts as two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Which response time fits my application?\u003c\/strong\u003e\u003cbr\u003eA: Choose 23 µs for high-speed detection and 64 ms for stable readings on difficult targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What supply voltage does this amplifier require?\u003c\/strong\u003e\u003cbr\u003eA: It runs on 10 to 30 VDC with ripple at 10% P-P or less, using a Class 2 or LPS source.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does the FS-N42N provide external inputs?\u003c\/strong\u003e\u003cbr\u003eA: No, this expansion unit has no external input and offers one NPN control output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the operating temperature range?\u003c\/strong\u003e\u003cbr\u003eA: The unit works from -20 to +55 °C without freezing, with derating as you add units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How much does the amplifier weigh?\u003c\/strong\u003e\u003cbr\u003eA: The FS-N42N weighs approximately 48 g, lighter than the main unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is stock available and how fast do you ship?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we hold new original stock and ship within 5 days via DHL, FedEx, or UPS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is your return policy?\u003c\/strong\u003e\u003cbr\u003eA: We accept returns within 30 days of delivery.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keyence","offers":[{"title":"Default Title","offer_id":48956432711841,"sku":"FS-N42N","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/FS-N42N-1.jpg?v=1794369329","url":"https:\/\/www.autonexcontrol.com\/products\/fs-n42n-keyence-fs-n40-fiber-optic-sensor-amplifier","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}