Keyence FS-N43P PNP Fiber Amplifier Dual Output

Keyence FS-N43P Dual Output PNP Fiber Sensor Amplifier

The Keyence FS-N43P heads an FS-N40 amplifier group in PNP wiring environments. It provides two PNP control outputs and one external input, and it powers every expansion unit attached to it. Because the dual outputs work independently, one FS-N43P can handle two detection points at once. This saves rail space and wiring compared with two separate main units.

Technical Specifications

A red four-element LED with a 660 nm wavelength drives the optical system. This element design keeps emission steady across long fiber cables. The amplifier provides eight response modes, from 23 µs (S-HSPD) to 64 ms (TERA). Consequently, one model serves both high-speed registration marks and slow, contaminated targets.

• Response time: 23 µs (S-HSPD) / 50 µs (HSPD) / 250 µs (FINE) / 500 µs (TURBO) / 1 ms (SUPER) / 4 ms (ULTRA) / 16 ms (MEGA) / 64 ms (TERA)

• Control outputs: 2 (PNP open-collector)

• External input: 1, input time 2 ms (ON) / 20 ms (OFF) or longer

• Output rating: 30 V max, 100 mA max per output

• Residual voltage: 1.6 V at 10 mA; 2.2 V at 10–100 mA

• Unit expansion: up to 16 units (17 total including main; dual-output counts as 2)

Electrical and I/O Details

The supply voltage ranges from 10 to 30 VDC with 10% ripple P-P or less. A Class 2 or LPS source is required. Power consumption stays at 990 mW or less, equal to 39 mA at 24 V. ECO ON reduces this to 920 mW, and ECO FULL brings it to 830 mW. Additionally, the external input accepts bank-switching or timing signals from a PLC. This lets operators change settings without touching the display.

Mechanical and Environmental Parameters

The main unit weighs approximately 83 g. Operating temperature spans -20 to +55 °C with no freezing. Furthermore, thermal derating applies as users add expansion units. The housing clips onto standard DIN rail and fits dense control cabinets.

Installation Guide

First, clip the main unit onto the DIN rail at the left end of the amplifier group. Next, wire the 10–30 VDC supply and route both PNP outputs to the PLC. Then, connect the external input if the process needs bank switching. After that, attach expansion units on the right side through the expansion connector. Finally, set response modes and thresholds through the OLED display, and verify detection with the real workpiece.

Keep fiber cables away from high-voltage lines and respect the minimum bend radius. For long output runs, check the voltage drop against the load tolerance.

Packaging List

• 1 × Keyence FS-N43P main amplifier unit

• 1 × Mounting bracket

• 1 × Instruction sheet

FAQ

Q1: What separates the FS-N43P from an expansion unit?
A: The FS-N43P is a main unit with its own power circuit and two control outputs. Expansion units such as the FS-N42P need a main unit to operate.

Q2: How many expansion units can this main unit support?
A: It supports up to 16 expansion units, giving 17 total including the main unit. A dual-output model counts as two units.

Q3: What is the external input used for?
A: It supports bank switching and timing functions. The input reacts to signals of 2 ms ON and 20 ms OFF or longer.

Q4: Why choose the PNP version?
A: PNP outputs switch the positive supply and match PLC cards wired for positive logic. Most European and North American panels follow this standard.

Q5: How fast can you ship this amplifier?
A: We ship by Fedex, UPS, or DHL. Most orders leave the warehouse within 1–3 business days after payment confirmation.