FAQ
DQE is a Type 4 ESPE. When integrated with a certified safety relay or safety PLC, it supports designs targeting PL e (EN ISO 13849-1) and SIL 3 architectures. Always validate the complete safety function during commissioning.
DQE keeps emitter and receiver phase-locked via a sync cable, which suppresses crosstalk, stabilizes timing, and improves immunity to EMI, ambient light and vibration — conditions common on presses, welding cells, and inverter-driven machines. Shielded data/sync leads are standard.
Pick K by the smallest body part to detect: 10 mm (finger), 20 mm (palm), 40 mm (hand/arm), 80/200 mm (body/perimeter). DAIDISIKE DQE supports all five spacings to match your risk assessment and throughput needs.
Use H = (n − 1) × K. Total height follows the product rule L = P + H + J + 24 (P/J depend on K). Example: 32 beams at 20 mm → H = (32−1)×20 = 620 mm; if K=20 mm, L = H + 59 = 679 mm.Tip — Verify the guarded opening and mounting clearances before placing the order.
Factory standard is 0.3–3.5 m. For special projects, DAIDISIKE can engineer solutions within 6 m after application review (background reflections, mounting geometry, stopping time, ambient light).
DQE provides dual OSSD channels (A/B) with NPN or PNP selection and NO/NC logic options (A/B/C/D). Wire each OSSD to an independent, certified safety input and enable EDM in the safety relay/PLC to monitor external contactors. Never tie the channels together.
Apply ISO 13855: S = K × T + C. Here T = machine stopping time + DQE response (≤ 15 ms); select the approach speed K per the protected body part (typ. 1600–2000 mm/s). Confirm with a calibrated stop-time meter and document the result.
Narrow-band modulated IR, shielded sync/data cables, and a rigid 30×30 mm body deliver high immunity to ambient light (up to 10,000 lux), inverter noise and mechanical vibration/shock (10–55 Hz, 1.5 mm; 100 m/s²).
Yes. Configure muting/blanking in the safety controller/PLC. DQE’s dual OSSD and EDM keep channel integrity while allowing material flow through conveyors or pallet in-feed.
Power-on and cyclic self-test, cross-monitoring, short-circuit, overload and reverse-polarity protection. Status LEDs indicate power, blockage and OSSD state; detected faults are latched to prevent unsafe restarts.
IP65 enclosure; operating −10…+40 °C, 35–85 %RH (non-condensing). M12 aviation connectors simplify installation and maintenance in oily, dusty environments.
Use: DQE | n | K | H | output group | logic. Example: DQE 32 | 20 | 620 | 1 | A → 32 beams, 20 mm spacing, H=620 mm, single output group, PNP-NO logic (standard range 0.3–3.5 m).
