ABB Jokab Safety Alternatives — Eden, Focus & Relays Mapped to DAIDISIKE

Content updated: September 5, 2026.

We keep cross-reference notes for the brands customers arrive with, and ABB Jokab Safety is a special case because it is not a single product line. ABB acquired the Swedish company Jokab Safety, and the range now sold as “ABB Jokab Safety” is split by function: coded interlocks (Eden), light curtains (Focus), a programmable safety PLC (Pluto), a dynamic-signal controller (Vital), and a set of hardwired single-function relays (RT / BT / JSB). That structure matters, because there is no single “Jokab alternative” — each family requires its own evidence and validation, and one family (Pluto) where the honest answer is “that is a different class of device.” This page goes family by family.

One discipline before the detail: a brand swap is sound only when you match the function and rating, not the label. ABB/Jokab order numbers (Eden 2TLA020051R5400, Focus II FII-4-30-900, Pluto B46, RT9 and so on) belong to ABB/Jokab parts; the DAIDISIKE parts have their own SKUs and terminal layouts. The job is to map function → function, confirm the required functions, design the changed circuit, and validate it.

The DAIDISIKE industrial safety and automation catalog is the commercial starting point for this multi-family comparison. Use the guard interlock category, light curtain category and safety relay category only for their respective functions.

How is ABB Jokab Safety structured?

Pick the family first; only then pick the DAIDISIKE part. Here is the honest map of the real ABB Jokab families, a few anchor models, and whether DAIDISIKE has a matching part — or doesn't.

A signature concept runs across several Jokab families: dynamic single-channel series connection (DYNlink) — chaining many sensors into one input on a Vital controller or Pluto. That is a genuine Jokab differentiator DAIDISIKE does not replicate, and it is the thing that most often turns a “simple swap” into an architecture decision. Keep it in mind as you read each family below.

Eden coded interlock → DAIDISIKE DX-R1: how close is the match?

ABB Eden uses an Adam sensor and Eva actuator for non-contact coded monitoring. Its OSSD and DYN versions have different interfaces; general and unique coding are different options. Read the installed order code and applicable manual before comparing operating distance, environmental rating and controller compatibility.

The DX-R1 uses coded magnetic sensing. Its product documentation lists ISO 14119 Type 4 interlocking and a catalog PL e circuit rating, with high-level unique or low-level universal coding according to variant. It does not establish standalone SIL 3 or Category 4. Confirm the actual output and cascade variant. It monitors position; it does not supply guard locking.

Focus / Focus II light curtain → DAIDISIKE DQC / DQT4

Focus / Focus II belongs to ABB's optical protective-device range. ABB identifies Focus as obsolete, so obtain the legacy manual and check the documented migration options. Detection capability, protected height, muting, blanking and response depend on the actual unit; an equal nominal height does not establish equivalence.

Use the DAIDISIKE model documentation to compare candidates:

• DQC — verify the actual detection capability, height, response time, enclosure and output interface. Do not infer integrated EDM or muting from the series name.
• DQT4 — compare the exact model's Type 4 evidence and electrical requirements; matching a product family does not establish pin, reset, blanking or muting compatibility.

A component or subsystem can carry a documented PL/SIL capability. The level achieved by the machine depends on the complete sensor, logic and output design and its validation; adding a certified relay does not automatically achieve PL e or SIL 3.

RT-series relay → DAIDISIKE DA31 (and why Pluto is NOT in scope)

The DA31's real peer is the RT-series single-function relay — not the Pluto safety PLC. Match the function. ABB Jokab's hardwired single-function relays are the RT6, RT7 and RT9 (plus JSBRT11). The RT9 is a 22.5 mm, 24 VDC DIN module, IP20, −10…+55 °C, with 2 safety input channels, auto-reset + test-reset inputs, 2 NO enabling paths + 1 changeover info output, manual or automatic reset, EN 62061 / ISO 13849-1, SIL 3 / PL e / Cat. 4. The RT6 is the 3-enabling-path E-stop/gate workhorse with internal dual/supervised functions, two voltage-free transistor info outputs, and manual + auto reset.

The DA31 is a safety relay. Its manufacturer material lists 3NO+1NC outputs, a 22.6 mm housing and EN ISO 13849-1 Cat. 4 / PL e; the product label references IEC 62061 SIL 3. These manufacturer claims do not establish independent certification or the achieved machine safety level. Obtain the matching manual and certificate scope. EDM is not established by this comparison, and reset or terminal compatibility with RT6/RT9 must not be assumed. DQSRN has no EDM or manual/automatic reset functions.

Where a cell reads “per ABB datasheet,” that is deliberate — we will not put a number in an ABB column unless it is published for that exact variant. Pull it from your unit's label.

Where DAIDISIKE honestly has no ABB Jokab equivalent

A cross-reference is only useful if it is honest about the gaps. The following boundaries must remain explicit when assessing a replacement:

• Pluto safety PLC — programmable, Safe-Bus, multi-zone, analog/counter I/O. The DA31 is a hardwired single-function relay; it is not a Pluto substitute.
• Vital + DYNlink — the dynamic single-channel series controller and topology (up to ~30 sensors per loop). DAIDISIKE has no documented compatible dynamic-bus controller in this guide. A conventional dual-channel design requires separate engineering and validation.
• Safety laser scanner. The Jokab safety-scanner role is IEC 61496-3 (Type 3). The DAIDISIKE DLD05A3 / DLD20A5 LiDAR is explicitly NOT IEC 61496-3 safety-rated — it is an obstacle-avoidance / AGV-AMR navigation / perimeter-detection sensor. Do not present the DLD as a safety-scanner equivalent. ST27 is separately confirmed as Type 3, PL d and SIL 2; verify its documented application limits without assuming ABB interchangeability.

For certification, compare the exact model documents: declaration of conformity, safety manual and applicable third-party certificate scope. A CE mark is not by itself a third-party safety certificate. No per-order TÜV testing service or brand-wide certification parity is promised here.

What to match before you swap any ABB Jokab part

Read these numbers off the installed unit and its datasheet before ordering — the same discipline for every family.

• Function & family — interlock (Eden), curtain (Focus), relay (RT) or controller (Pluto/Vital)? Only the first three have candidates discussed here, subject to evidence and validation.
• Coding / sensing (interlocks) — Eden RF + DYNlink option vs DX-R1 coded magnetic; confirm topology and washdown.
• Resolution & protected height (curtains) — 14/30 mm finger/hand and the FII-4-xx-[height] field length.
• Contacts, channels, EDM, reset (relays) — NO enabling paths in use, dual-channel inputs, EDM, auto vs monitored-manual reset.
• PL / SIL target — from your risk assessment and verify the complete replacement function against that target.
• DIN width & supply — panel budget (DA31 is 22.6 mm) and 24 VDC supply.

Send those off your installed Jokab parts and we will confirm the DX-R1, a DQC / DQT4 curtain or the DA31 is a candidate for evaluation — or tell you plainly that you need a safety PLC instead. The wider method and the other safety-relay cross-references (such as our Pilz PNOZ alternatives and Allen-Bradley Guardmaster alternatives) follow the same discipline.

Is naming ABB and Jokab legal, and how do you keep this honest?

Brand names identify the equipment being compared and do not imply partnership or endorsement. This page makes no legal determination about a particular advertisement or jurisdiction. Product selection must use current original documents; third-party descriptions and matching brand words cannot establish compatibility or certification.