SIEN-M5B-NS-K-L - Industrial Automation Festo - Free user manual and instructions
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| Product Type | Inductive Proximity Sensor |
| Brand | Festo |
| Model | SIEN-M5B-NS-K-L |
| Sensor Type | Inductive Proximity Sensor |
| Housing Size | M5 x 0.5 threaded |
| Mounting Type | Flush (shielded) |
| Sensing Distance | 1 mm nominal |
| Output Type | NPN Normally Closed (NC) |
| Supply Voltage | 10-30 V DC |
| Switching Current | 200 mA max |
| Connection Type | Cable, 3-wire |
| Cable Length | 2.5 m |
| Operating Temperature | -25 to +70 °C |
| Protection Rating | IP67 |
| Housing Material | Stainless steel |
| Dimensions | Diameter 5 mm, length 30 mm |
| Weight | Approx. 20 g |
| Maintenance | Wipe sensing face with a soft cloth; no regular maintenance required |
| Safety | Observe rated voltage and polarity; do not exceed clamping torque |
| Repairability | Non-repairable; replace the unit if defective |
Frequently Asked Questions - SIEN-M5B-NS-K-L Festo
What is the sensing range of the Festo SIEN-M5B-NS-K-L?
The sensor has a nominal sensing distance of 1 mm for a standard carbon steel target. The actual distance may vary with the target material and size.
What does 'NS' in the model name mean?
'NS' indicates the sensor has an NPN output with normally closed (NC) switching behavior. This means the output transistor turns off when a target enters the sensing range.
How do I connect the sensor wires?
The sensor is equipped with a 3-wire cable. Connect the brown wire to the positive supply (10-30 V DC), the blue wire to 0 V (negative), and the black wire is the switching output. Ensure the load is connected between the output and the positive supply.
Can it detect non-metal objects?
No, an inductive sensor only detects metallic objects. Non-metal materials such as plastic, wood, or glass are invisible to the sensor.
What is the recommended operating voltage?
The sensor operates on a 10-30 V DC supply. Use a stabilized power supply to avoid voltage fluctuations that could affect performance.
Is the SIEN-M5B-NS-K-L shielded or unshielded?
The 'B' in the model name indicates a flush (shielded) mount. This means the sensor can be embedded flush in a metal surface with minimal derating of the sensing distance.
What is the protection class?
The sensor meets the IP67 protection standard, making it dust-tight and protected against temporary immersion in water.
How should I clean the sensing face?
Clean the sensing face with a soft, lint-free cloth slightly dampened with water or mild detergent. Avoid using solvents or abrasive pads that may scratch the surface.
Can the sensor be used outdoors?
Yes, with IP67 protection it can operate outdoors under normal conditions. Avoid exposure to aggressive chemicals that might attack the housing or cable.
What should I do if the sensor fails?
First verify the supply voltage and wiring. If the sensor still does not switch correctly, it is likely defective. The unit is non-repairable and must be replaced with a new one.
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USER MANUAL SIEN-M5B-NS-K-L Festo
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Product information
Brand : Festo
Model : SIEN-M5B-NS-K-L
Category : Industrial Automation