Purchase now: Schmersal ZQ 700-11 Rope Pull Switch
Purchase now: Atlantech Drives provides you the Schmersal ZQ 700-11, a compact and cost-effective Pull-Wire Emergency Stop Switch. Unlike mushroom-head buttons that are fixed in one location, the ZQ 700 allows operators to trigger an E-Stop from anywhere along the wire length (up to 10 meters). This makes it the ideal safety solution for small conveyor belts, packaging lines, and assembly stations where an operator might need to stop the machine while working at different positions.
Technical Specifications and Wire Breakage Detection
The ZQ 700 features a thermoplastic enclosure designed for indoor industrial use (**IP 67**). The «11» configuration indicates **1 NO and 1 NC** contact. It is equipped with a **Wire Breakage Detection** mechanism: the switch trips if the wire is pulled (Emergency) OR if the wire snaps/goes slack (Safety Failure), ensuring the machine cannot run with a compromised safety system. It includes a simple position indicator to help set the correct wire tension during installation.
- Part Number: ZQ 700-11.
- Model: ZQ 700.
- Max Wire Length: 10 meters.
- Contacts: 1 NO / 1 NC.
- Housing: Thermoplastic.
- Reset: Push-button release.
- Feature: Wire breakage detection.
- Mounting: 2 x M5 screws.
Expert Maintenance Tips: Tension Check
Rope switches are dynamic systems. Expert Tip: The steel wire rope will stretch over time, especially in the first few weeks of operation. If the wire becomes too loose, the ZQ 700 will trip due to the «slack wire» safety function. Schedule a monthly check to verify the tension indicator is centered. If it has drifted, adjust the turnbuckle or eye-bolt to re-tension the system without needing to re-wire the switch.
Frequently Asked Questions (FAQs)
Q: Do I need springs for installation?
A: Yes, for proper operation and to absorb thermal expansion, you should always use a tension spring (part of the accessory kit) at the anchor point opposite the switch.
Q: Is this suitable for outdoor use?
A: The ZQ 700 is thermoplastic. For harsh outdoor environments or heavy mining applications, we recommend the metal-bodied ZQ 900 or RS 655 series instead.
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