Purchase now: Schmersal BNS 16-12ZD Safety Sensor
Purchase now: Atlantech Drives provides you the Schmersal BNS 16-12ZD, a high-reliability Coded Magnetic Safety Sensor designed for non-contact monitoring of safety guards. Unlike standard mechanical switches, the BNS 16 series utilizes magnetic coding to sense the position of the actuator, making it immune to wear, debris, and misalignment. This specific model («ZD») is equipped with an integrated LED Status Indicator, allowing operators to visually verify the switching status directly on the device, which greatly speeds up diagnostics during machine commissioning or fault finding.
Technical Specifications and Resilience
The BNS 16-12ZD is housed in a rectangular thermoplastic enclosure reinforced with glass fiber, achieving an IP 67 protection rating. It is suitable for concealed mounting and can withstand high-pressure washdowns, making it ideal for the food processing and packaging industries. The sensor provides 2 NC (Safety) contacts and 1 NO (Signaling) contact, enabling it to be integrated into Category 4 / PLe safety circuits when used with an appropriate safety monitoring module.
- Part Number: BNS 16-12ZD.
- Technology: Magnetic, Coded (Tamper resistant).
- Contacts: 1 NO / 2 NC.
- Indication: Integrated LED.
- Switching Distance (On): 8 mm.
- Switching Distance (Off): 18 mm.
- Protection: IP 67.
- Dimensions: 52 x 90 x 32 mm.
- Connection: Screw Terminals.
Expert Installation Advice: Handling Inrush Current
When connecting the BNS 16-12ZD directly to a control system or relay, pay close attention to the load. Expert Tip: Although these are magnetic switches, if you switch capacitive loads (like long cables or certain PLC inputs) or inductive loads (relays) without protection, the high inrush current can weld the internal reed contacts. Always verify that the electrical load is within the specified limit (typically 100VAC/DC, 400mA), or use an interposing safety relay module like the SRB series to protect the sensor.
Frequently Asked Questions (FAQs)
Q: Does the actuator come with the sensor?
A: Typically, the magnetic actuator (e.g., BPS 16) is sold separately or as a kit. Ensure you have the matching coded actuator for the BNS 16 series.
Q: What does the LED indicate?
A: The LED usually lights up when the guard is closed (actuator present) and the safety contacts are closed, providing immediate visual feedback that the gate is safe.
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