FAQ
The DQE is a through-beam opto-electronic protective device (AOPD) — a product category designed with reference to IEC 61496 and to the machinery-safety standards ISO 13849 / ISO 13855. DAIDISIKE has not published a type classification or performance level for the DQE series, so none is claimed here; request the current test documentation from the factory before specifying the DQE into a rated safety function. Where a documented Type 4 / PL e / SIL 3 device is required, use the DQT4 series.
Beam count. The DQC tops out at 32 beams; the DQE runs to 70 beams at 10 mm pitch (DQE70/10-690) and 72 beams at 20 and 40 mm pitch (up to 2840 mm protective height), so a fine pitch and a large protected height no longer force a trade-off or a cascaded pair. The DQE also offers the optional built-in DQET controller, which removes the external control box from the cabinet. Both series share the DQCA-01…05 mounting brackets.
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).
The DQE uses transistor outputs with NPN or PNP signal selection, wired by 6-core or dual 7-core cable. Wire each safety output to an independent, certified safety input and enable EDM in the safety relay/PLC to monitor external contactors; never tie the channels together. Dual-channel OSSD availability is described inconsistently in the legacy documentation — confirm it with the factory for your build.
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.
DQET is the DQE variant with the control logic integrated into the curtain itself. It removes the separate control box from the cabinet along with the wiring run to it, which saves panel space and shortens commissioning. Specify DQET at order time — it is a build option, not a field retrofit.
Muting and blanking are configured in the safety controller or PLC, not on the curtain. Confirm with the factory whether the DQE build you are quoting exposes the signals your controller needs.
The DQE uses the same DQCA-01 … DQCA-05 bracket platform as the DQC series, so a plant running both keeps one spare-parts list instead of two.
The IP rating, operating temperature range, housing dimensions and housing material are not published in the DQE catalogue data, so no figures are stated here — contact the factory for the confirmed values for the build you are quoting.
Use DQE + beam count (2 digits) + "/" + beam pitch + "-" + protective height. Example: DQE32/20-620 → 32 beams, 20 mm pitch, H = 620 mm (standard detection distance 0.3–3.5 m). State the output type (NPN or PNP) and whether you want the built-in DQET controller when you place the order.
