Purchase now: Schmersal 101144796 AZM 161 Guard Locking Switch
Purchase now: Atlantech Drives provides you the Schmersal 101144796 (Model: AZM 161SK-12/12RK-024), a heavy-duty Solenoid Interlock Switch designed for machines with dangerous run-down times (inertia). Unlike a standard safety switch that stops the machine when the door opens, the AZM 161 keeps the door physically locked until the machine control system sends a signal that it is safe to enter (e.g., after the blade has stopped spinning). This unit operates on **24 VAC/DC**.
High Holding Force and Contact Configuration
The AZM 161 is a powerhouse in the safety industry, offering a holding force of **2,000 N**, making it suitable for large, heavy safety gates. The «12/12» configuration implies a high density of contacts: typically contacts for monitoring the door position and contacts for monitoring the lock status, allowing for sophisticated integration into safety PLCs. It features a Manual Release mechanism (for setup or power failure scenarios) located on the side or cover.
- Part Number: 101144796.
- Model: AZM 161SK-12/12RK-024.
- Holding Force: 2,000 N.
- Control Voltage: 24 V AC/DC.
- Contacts: 1 NO / 2 NC (Door) + 1 NO / 2 NC (Solenoid/Lock).
- Housing: Thermoplastic, self-extinguishing.
- Cable Entry: M16 (standard).
- Protection: IP 67.
Expert Installation Advice: Power-to-Lock vs Power-to-Unlock
It is critical to verify the locking logic for your risk assessment. Expert Tip: This unit is typically «Power to Unlock» (the safest method for personnel protection). If power is lost, the door remains locked. Ensure your 24V power supply is reliable. Also, never use the safety switch as a mechanical door stop. Install a separate physical rubber bumper to stop the heavy door; otherwise, the impact energy will shatter the solenoid housing over time.
Frequently Asked Questions (FAQs)
Q: How do I unlock it in an emergency (power cut)?
A: The unit is equipped with an auxiliary manual release (usually a triangular key or screw turn) that allows maintenance personnel to manually unlock the guard during a blackout.
Q: What is the maximum cable length for the 24V supply?
A: Solenoids draw significant current (inrush). Ensure your cable gauge is sufficient so that voltage drop does not reduce the supply below 20.4V at the switch, or the solenoid may fail to pull in.
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