Overview
The Sick ZLM1-C1121S03S10 is a ZoneControl logic module sensor combining photoelectric detection with integrated pneumatic valve control for zero pressure accumulation (ZPA) applications. Model 1042781 provides the core intelligence and solenoid valve interface necessary for stage-and-release conveyor control in distribution centers and logistics automation.
Key Features
- Integrated photoelectric sensor and ZoneControl logic in single unit
- Pneumatic valve output for Air to Drive (NC) mode operation
- Low-power 24 V DC coil with 1 W consumption
- Fast solenoid response: 10 ms partially open, 23 ms fully open, 21 ms close
- Plastic ABS housing with IP40 enclosure protection
- Operates from 0 to 4.5 bar compressed air pressure
Technical Specifications
- Housing Material: Plastic, ABS
- Enclosure Rating: IP40
- Coil Voltage: 24 V DC
- Coil Power: 1 W
- Solenoid Valve Mode: Air to Drive (NC)
- Pneumatic Connection: 3/8″ diameter (main), 1/4″ diameter (control line)
- Operating Pressure Range: 0 to 4.5 bar
- Valve Response Time (Open): 23 ms
- Valve Response Time (Close): 21 ms
- Operating Temperature: –10 °C to +55 °C
- Storage Temperature: –40 °C to +75 °C
- Shock & Vibration Resistance: Per IEC 68
Typical Applications
- Zero pressure accumulation (ZPA) on conveyor belt systems
- Zone-based product flow control in logistics and distribution centers
- Single or slug accumulation modes for carton/pallet handling
- Automated warehousing and fulfillment facilities
- High-volume conveyor networks requiring independent zone management
Compatibility & Replacements
Compatible With
- ZoneControl pneumatic control systems
- Zero pressure accumulation (ZPA) conveyor applications
- Compressed air systems rated 0–4.5 bar
- 24 V DC control circuits
- Multi-zone accumulation conveyor installations
Replaces / Drop-In Replacement For
- Other ZLM1 series ZoneControl logic modules in equivalent configurations
- Verify compatibility with your system integrator before ordering to confirm zone requirements and valve specifications match your conveyor design
Works With
- Sick ZoneControl family products and accessories
- Standard pneumatic valve manifolds with 3/8″ and 1/4″ NPTF connections
- 24 V DC industrial control power supplies
- Compressed air distribution networks in factory automation


















