Overview
The SICK ZLM1-C1121S03S10 is a ZoneControl photoelectric logic module engineered for Zero Pressure Accumulation (ZPA) control in conveyor systems. This sensor integrates photoelectric detection with ZPA logic circuitry, eliminating the need for separate components in many accumulation conveyor applications. Part number 1042781, the ZLM1-C1121S03S10 operates on 24VDC and delivers precise zone-based control for intelligent product staging and discharge.
Key Features
- Integrated ZPA logic module with photoelectric sensor
- 24VDC operation with 60 mA output capacity
- 200 Hz frequency response for fast zone detection
- IP40 enclosure rating for industrial environments
- Plastic ABS housing with IEC 68 shock and vibration resistance
- Pneumatic valve output for direct solenoid control
Technical Specifications
- Supply Voltage: 24VDC
- Output Current: 60 mA
- Frequency Response: 200 Hz
- Operating Temperature: –10 °C to +55 °C
- Storage Temperature: –40 °C to +75 °C
- Housing Material: Plastic, ABS
- Enclosure Rating: IP40
- Protection Class: III
- Response Time (Pneumatic): 10–23 ms
- Operating Pressure Range: 0–4.5 bar
- Connector Type: Pneumatic (Compressed air 3/8″, control line 1/4″)
Typical Applications
- Accumulation conveyor zone control with single or slug accumulation modes
- Automated material handling and product sorting systems
- Warehouse logistics and distribution center conveyor networks
- Pneumatic-driven accumulation control with integrated detection
- High-speed package processing and diverter gate activation
Compatibility & Replacements
Compatible With
- SICK ZoneControl family systems and peripherals
- Zero Pressure Accumulation (ZPA) conveyor platforms
- Pneumatic valve and solenoid systems (24VDC coil rated)
- Accumulation conveyor daisy-chain cabling networks
- Standard industrial automation 24VDC control circuits
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The ZLM1-C1121S03S10 is a specific ZoneControl variant; ensure your existing system matches this exact configuration before replacement.
Works With
- SICK ZoneControl Interface Modules (ZIM)
- SICK ZoneControl Power Supplies
- Pneumatic solenoid valves (2/2 and 3/2 poppet types)
- Standard industrial PLC systems via external logic
- Accumulation conveyor control systems with photoelectric input












