Photoelectric Sensor Panasonic EX-Z13B-P — through-beam transmitter/receiver, dark-on, 12–24 V DC

Panasonic EX-Z13B-P is a through-beam photoelectric sensor pair consisting of a transmitter and matching receiver configured for dark-on switching. Designed for industrial object detection and position sensing, this sensor pair detects interruptions of a continuous infrared beam and provides a reliable switching signal at a 12–24 V DC supply. The integrated transmitter and receiver combination is supplied as a single matched unit, simplifying installation and alignment in conveyor systems, material handling lines, and automation equipment.

Advantages

The through-beam arrangement offers long sensing range and high immunity to ambient light, ensuring stable detection of small or dark objects. Dark-on switching provides a clear active output when the beam is interrupted, which simplifies integration with PLCs and control relays. The wide supply range (12–24 V DC) allows flexible connection to common industrial power systems, and the matched transmitter/receiver pair reduces setup time and alignment errors.

Suitable for

• Conveyor object detection and counting
• Position sensing of parts in assembly lines
• Presence monitoring in material handling systems
• Safety interruption and access detection where dark-on output is required
• Applications requiring stable detection of small, transparent, or dark items

Key specifications

• Sensing principle: through-beam (separate transmitter and receiver)
• Switching mode: dark-on (output active when beam interrupted)
• Supply voltage: 12–24 V DC
• Output type: discrete switching output compatible with standard control inputs
• Optical source: infrared emitter
• Mounting: inline mounting of transmitter and receiver with alignment capability
• Environment: designed for industrial automation and material handling use

How to use

Install the transmitter and receiver facing each other across the detection path, ensuring secure mounting and correct alignment so the infrared beam is uninterrupted in the idle state. Connect the power supply within the 12–24 V DC range and wire the switching output to the control system input or relay according to the wiring diagram supplied by the manufacturer. Adjust mechanical alignment and any fine-positioning features until the receiver indicates a steady signal with no target present. Verify dark-on operation by passing objects through the beam and confirming the output switches when the beam is interrupted.

Usage recommendations

For reliable performance, keep the optical faces clean and free of dust or debris, and ensure proper alignment after any mechanical changes. Use shielded cabling for long runs and follow equipment grounding practices. Select mounting brackets that minimize vibration and allow easy access for periodic inspection and cleaning.