DX-W5 / DX-D2D3 / DX-W3 / DX-W2 Industrial Machine Tool Safety Door Locks
DX-W5, DX-D2 / D3, DX-W3 and DX-W2 industrial machine safety door interlocks from Foshan DAIDISIKE serve different guarding tasks. DX-W2/W3/W5 include guard-locking variants; the DX-D2 / DX-D3 position-monitoring interlock has no locking function. For machine tools and automated lines, determine whether the hazard can cease before access, then select the appropriate monitoring and release arrangement. The DX-D2/D3 documentation cites IEC/EN 60947-5-1 and GB 14048.5-2017; verify the exact device evidence and complete safety circuit rather than transferring a family-wide rating.
Historical family illustrations are not the current DX-D2/D3 ordering table. For DX-D2/D3, use the four standard codes and model-specific specifications below; references to locking or emergency release in shared family material apply only to appropriate locking variants.
Product Introduction
In modern industrial production, machine tool safety door locks serve as essential equipment to safeguard operator safety and prevent accidents. As a specialized manufacturer of optoelectronic safety protection products, Foshan Daidisike Optoelectronic Technology (DAIDISIKE) introduces the DX series safety door lock product line — DX-W5, DX-D2 / D3, DX-W3, and DX-W2. These products are intended for industrial machine tools, but position monitoring and guard locking are separate functions. DX-D2/D3 reports guard position without retaining the door. Where access must remain prevented until a hazard has ceased, evaluate a suitable DX-W2/W3/W5 locking variant and its monitored release arrangement instead. Apply the exact model's documentation and the machine risk assessment; no interlock alone guarantees that the whole machine is safe.
Advantages and Benefits of the DX Series Safety Door Locks
The DAIDISIKE DX series stands out in the industrial-safety domain through superior design and performance. Key advantages include:
- Compact and lightweight design: small size and low weight fit sliding doors, hinged doors and various protective-door configurations — reducing on-site modification expenses.
- Diverse contact configurations and locking capabilities: gold-plated contacts with up to 6 groups of combinations (model-dependent); electromagnetic locking models provide a holding force of up to 1300 N, suitable for both standard and micro-load applications.
- Exceptional compatibility: compatible with 11 types of operating keys and adjustable in up to 8 insertion directions. Selected models include front/rear emergency unlocking.
- Reliability and durability: metal heads (J) or plastic heads (S) depending on model; the DX-D2/D3 uses a resin head and mechanically operated contacts. Input diagnostics depend on the complete validated safety circuit. Mechanical life > 1,000,000 cycles; electrical life > 150,000 cycles (up to 300,000 in some models). IP67 protection (excluding the keyhole).
- Options: optional front / side emergency release on the DX-W5 and an optional rear manual unlock kit (DX-W2-L) on the DX-W2.
- Cost-effectiveness: minimal maintenance, extended equipment life, low long-term operational costs — space-saving design for constrained machine-tool environments.
- Wide application scope: machine tools, robot-arm guarding, hazardous test zones — strengthens overall safety management.
These strengths stem from DAIDISIKE's extensive R&D expertise, ensuring consistent and efficient performance in real-world applications.
Detailed Product Specifications
Each DX series model varies slightly in specifications. The tables below detail the parameters drawn from manufacturer datasheets. The DX-W2 and the current DX-D2/D3 factory table publish ambient temperatures of −20 °C to +60 °C (no freezing). Apply each model's own table and installation conditions. All models use gold-plated contacts. Housing dimensions, insulation class and other limits are model-specific; DX-D2/D3 humidity is published as below 85% RH.
DX-W5 Series — Specifications & Parameters
Features: metal head, 6 sets of gold-plated contacts, 4 contact combinations, DC 24 V / AC 110 V, locking force 1300 N, indicator light + emergency unlocking. Compatible with 11 types of operating keys. Suitable for monitoring safety doors and windows with high-strength wear-resistant engineering plastic and built-in 304 stainless-steel components. Forced mechanical interlocking self-detection for extreme reliability.
| Category | Parameter | Value |
|---|---|---|
| Electrical | Rated voltage | 10 – 115 V AC/DC |
| Rated current | 1 mA | |
| Light source color | Green | |
| Rated working voltage | DC 24 V ± 10 % | |
| Rated current | 200 mA (initial value) | |
| Rated power | 4 W | |
| Rated insulation voltage (Ui) | 300 V | |
| Rated impulse withstand voltage (Uimp) | 2.5 kV | |
| Rated open thermal current (Ith) | 10 A | |
| Use category | AC-15 / DC-13 | |
| Rated working voltage (Ue) | 240 V / 30 V / 250 V | |
| Rated operating current (Ie) | 3 A / 2.3 A / 2.7 A | |
| Mechanical | Dimensions (W × H × L) | Contact factory |
| Insulation class | Contact factory | |
| Shell material | PA66 flame-retardant | |
| Contact material | Gold-plated silver alloy | |
| Protection level | IP67 (EN 60947-5-1, except key hole) | |
| Service life | Electrical > 150,000 cycles | |
| Tensile strength when locked | 1300 N | |
| Forced disengagement force | ≥ 80 N | |
| Forced breakout distance | ≥ 10 mm | |
| Allowable operating speed | 0.05 – 0.5 m/s | |
| Allowable operating frequency | Contact factory | |
| Environmental | Ambient temperature | −20 °C to +60 °C (no freezing) |
| Environment humidity | Contact factory |
DX-W3 Series — Specifications & Parameters
Features: metal head, 2 sets of gold-plated contacts, 6 contact combinations, locking force 1300 N, indicator light + emergency unlock. Adapts to 11 kinds of operating keys. Compact design saves space.
| Category | Parameter | Value |
|---|---|---|
| Electrical | Rated voltage | DC 24 V |
| Rated current | 1 mA | |
| Light source color | Green | |
| Rated working voltage | DC 24 V ± 10 % | |
| Rated current | 200 mA (initial value) | |
| Rated power | 4 W | |
| Rated insulation voltage (Ui) | 300 V | |
| Rated impulse withstand voltage (Uimp) | 2.5 kV | |
| Rated open thermal current (Ith) | 10 A | |
| Use category | AC-15 / DC-13 | |
| Rated working voltage (Ue) | 240 V / 30 V | |
| Rated operating current (Ie) | 3 A / 2.3 A | |
| Mechanical | Dimensions (W × H × L) | Contact factory |
| Insulation class | Contact factory | |
| Shell material | PA66 flame-retardant | |
| Contact material | Gold-plated silver alloy | |
| Protection level | IP67 (EN 60947-5-1, except key hole) | |
| Service life | Electrical > 150,000 cycles | |
| Tensile strength when locked | 1300 N | |
| Forced disengagement force | ≥ 80 N | |
| Forced breakout distance | ≥ 10 mm | |
| Allowable operating speed | 0.05 – 0.5 m/s | |
| Allowable operating frequency | Contact factory | |
| Environmental | Ambient temperature | −20 °C to +60 °C (no freezing) |
| Environment humidity | Contact factory |
DX-W2 Series — Specifications & Parameters
Features: metal head, 4 sets of gold-plated contacts, 14 contact combinations, locking force 1300 N, indicator light + emergency unlocking. Optional back-unlocking function.
| Category | Parameter | Value |
|---|---|---|
| Electrical | Rated voltage | DC 24 V |
| Rated current | 1 mA | |
| Light source color | Green | |
| Rated working voltage | DC 24 V ± 10 % | |
| Rated current | 200 mA (initial value) | |
| Rated power | 4 W | |
| Rated insulation voltage (Ui) | 300 V | |
| Rated impulse withstand voltage (Uimp) | 2.5 kV | |
| Rated open thermal current (Ith) | 10 A | |
| Use category | AC-15 / DC-13 | |
| Rated working voltage (Ue) | 240 V / 30 V | |
| Rated operating current (Ie) | 3 A / 2.3 A | |
| Mechanical | Dimensions (W × H × L) | Contact factory |
| Insulation class | Contact factory | |
| Shell material | PA66 flame-retardant | |
| Contact material | Gold-plated silver alloy | |
| Protection level | IP67 (EN 60947-5-1, except key hole) | |
| Service life | Electrical > 150,000 cycles | |
| Tensile strength when locked | 1300 N | |
| Forced disengagement force | ≥ 80 N | |
| Forced breakout distance | ≥ 10 mm | |
| Allowable operating speed | 0.05 – 0.5 m/s | |
| Allowable operating frequency | Contact factory | |
| Environmental | Ambient temperature | −20 °C to +60 °C (no freezing) |
| Environment humidity | Contact factory |
DX-D2 / DX-D3 Series — Specifications & Parameters
For the independent model and ordering information, open the DX-D2 / DX-D3 guard-position interlock. It has no locking segment or guard-holding function; do not transfer the W-series coil, GD/GC or holding-force specifications to it.
Features: gold-plated contacts in four current standard ordering configurations, suitable for standard and small loads, adjustable up to 8 directional key operation holes, compatible with 11 operating-key variants. Design references: IEC/EN 60947-5-1 and GB 14048.5-2017.
Current source: factory catalogue dated 2026-05-08, PDF page 5 for specifications and ordering; pages 6–8 for keys and installation. Older illustrations saying 3, 5 or 6 contact structures do not define the current four-code supply range. D2 has two contacts per switch; D3 has three. Eight insertion directions and eleven key variants are separate selection dimensions.
| Category | Parameter | Value |
|---|---|---|
| Performance | Applicable standard | IEC/EN 60947-5-1 / GB 14048.5-2017 |
| Protection level | IP67 (EN 60947-5-1, excluding the actuator-key opening) | |
| Service life | Mechanical > 1,000,000 cycles / Electrical > 300,000 cycles | |
| Rated insulation voltage (Ui) | 400 V | |
| Rated impulse withstand voltage (Uimp) | 4 kV | |
| Rated open thermal current (Ith) | 8 A | |
| Use category | AC-15 | |
| Rated operating voltage (Ue) | AC 400 V | |
| Rated operating current (Ie) | 2 A | |
| Mechanical | Forced disengagement force | ≥ 60 N (within documented conditions; not holding force) |
| Forced breakup distance | ≥ 10 mm | |
| Operating frequency | ≤ 20 times/min | |
| Allowable operating speed | Not specified in the current DX-D2/D3 factory table; confirm the allowable actuator speed for the application. | |
| Conduit entry | M20 in the selection table; confirm the supplied gland/adapter assembly because the overview also mentions PG13.5 | |
| Environmental | Ambient temperature | −20 °C to +60 °C (no freezing) |
| Environment humidity | Below 85% RH |
The gallery retains historical product illustrations. Any DX-D2/D3 “5 structures” text in an image is superseded for current ordering by the current specifications above and four-model ordering list below; the original image pixels have not been edited. Shared locking language does not apply to this monitoring-only model.
Application Information
The DX series covers guard-position monitoring and, on the specified locking models, guard retention for industrial machine tools and automation equipment. The locked-door examples below require a suitable locking variant and release control; the non-locking DX-D2/D3 cannot retain a door. Confirm the complete guarding design for each application:
- Automated production lines: machine-tool protective doors, locked until the machine stops.
- Robot production areas: safety doors around robot arms to prevent accidental collisions.
- Hazardous testing zones: high-pressure test benches with forced locking to avoid exposure risks.
- Isolation sites: chemical storage and radiation areas — dependable isolation protection.
In practical deployments we recommend combining with light curtain sensors or safety mats for a multi-layered safety system. During installation, ensure the key direction matches the door type, and conduct regular checks on contact points to maintain reliability.
Product Model List
Common models — customizable on request. The GD/GC locking suffixes below apply to the listed W-series variants, not DX-D2/D3. GD = electromagnetic locking / mechanical unlocking; GC = mechanical locking / electromagnetic unlocking; J = metal head.
DX-W2 Series
GD — Electromagnetic Locking, Mechanical Unlocking:
- DX-W2-CO/CO-GD-J
- DX-W2-CO/2C-GD-J
- DX-W2-2C/CO-GD-J
- DX-W2-2C/2C-GD-J
- DX-W2-C2O/C-GD-J
- DX-W2-3C/C-GD-J
- DX-W2-2CO/C-GD-J
- DX-W2-C/3C-GD-J
- DX-W2-C/C2O-GD-J
- DX-W2-C/2CO-GD-J
- DX-W2-O/3C-GD-J
- DX-W2-O/2CO-GD-J
- DX-W2-2C/2O-GD-J
- DX-W2-2O/2C-GD-J
GC — Mechanical Locking, Electromagnetic Unlocking:
- DX-W2-CO/CO-GC-J
- DX-W2-CO/2C-GC-J
- DX-W2-2C/CO-GC-J
- DX-W2-2C/2C-GC-J
- DX-W2-C2O/C-GC-J
- DX-W2-3C/C-GC-J
- DX-W2-2CO/C-GC-J
- DX-W2-C/3C-GC-J
- DX-W2-C/C2O-GC-J
- DX-W2-C/2CO-GC-J
- DX-W2-O/3C-GC-J
- DX-W2-O/2CO-GC-J
- DX-W2-2C/2O-GC-J
- DX-W2-2O/2C-GC-J
Contact Types (Door monitoring + Lock monitoring):
- CO/CO (1NC/1NO + 1NC/1NO)
- CO/2C (1NC/1NO + 2NC)
- 2C/CO (2NC + 1NC/1NO)
- 2C/2C (2NC + 2NC)
- C2O/C (1NC/2NO + 1NC)
- 3C/C (3NC + 1NC)
- 2CO/C (2NC/1NO + 1NC)
- C/3C (1NC + 3NC)
- C/C2O (1NC + 1NC/2NO)
- C/2CO (1NC + 2NC/1NO)
- O/3C (1NO + 3NC)
- O/2CO (1NO + 2NC/1NO)
- 2C/2O (2NC + 2NO)
- 2O/2C (2NO + 2NC)
DX-W3 Series
GD — Electromagnetic Locking, Mechanical Unlocking:
- DX-W3-C/C-GD-J
- DX-W3-/2C-GD-J
- DX-W3-2C/-GD-J
- DX-W3-CO/-GD-J
- DX-W3-O/C-GD-J
- DX-W3-/CO-GD-J
GC — Mechanical Locking, Electromagnetic Unlocking:
- DX-W3-C/C-GC-J
- DX-W3-/2C-GC-J
- DX-W3-2C/-GC-J
- DX-W3-CO/-GC-J
- DX-W3-O/C-GC-J
- DX-W3-/CO-GC-J
Contact Types (Door monitoring + Lock monitoring):
- C/C (1NC + 1NC)
- —/2C (none + 2NC)
- 2C/— (2NC + none)
- CO/— (1NC/1NO + none)
- O/C (1NO + 1NC)
- —/CO (none + 1NC/1NO)
DX-W5 Series
GD — Electromagnetic Locking, Mechanical Unlocking:
- DX-W5-2CO/2CO-GD-J
- DX-W5-3C/2CO-GD-J
- DX-W5-2CO/3C-GD-J
- DX-W5-3C/3C-GD-J
GC — Mechanical Locking, Electromagnetic Unlocking:
- DX-W5-2CO/2CO-GC-J
- DX-W5-3C/2CO-GC-J
- DX-W5-2CO/3C-GC-J
- DX-W5-3C/3C-GC-J
Contact Types (Door monitoring + Lock monitoring):
- 2CO/2CO (2NC/1NO + 2NC/1NO)
- 3C/2CO (3NC + 2NC/1NO)
- 2CO/3C (2NC/1NO + 3NC)
- 3C/3C (3NC + 3NC)
DX-D2 / DX-D3 Series
Current standard ordering codes are DX-D2-CO (1NC+1NO), DX-D2-2C (2NC), DX-D3-2CO (2NC+1NO) and DX-D3-3C (3NC). These have no locking-monitor contact segment, and do not use the W-series slash-separated codes. See the independent DX-D2/D3 selection table for the contact mapping and installation limits.
Frequently Asked Questions
What is the difference between GD and GC variants of the DX safety door locks?
GD and GC identify locking variants in the DX-W2, DX-W3 and DX-W5 ranges, not the non-locking DX-D2/D3. The listed GD description is electromagnetic locking with mechanical unlocking; GC is mechanical locking with electromagnetic unlocking. The locking models list metal heads, gold-plated contacts and 1300 N holding force. Confirm the exact coil, normal release, manual/emergency release and power-loss behaviour from the ordered model's drawing. The required release principle depends on the machine risk assessment, not the suffix alone.
What design standards do the DX series door locks follow?
The DX-D2/DX-D3 tongue interlock switches use IEC/EN 60947-5-1 and GB 14048.5-2017 as their stated design references for control-circuit devices. They monitor guard position and have no locking function, so their contacts must not be described as lock-status monitoring. Check the exact contact arrangement and positive-opening data against the safety controller's input requirements. For a formal interlock-device classification or Performance Level statement, request the current documentation; the level achieved belongs to the complete circuit, not the switch alone.
How much holding force do the DX safety door locks provide and what is the mechanical life?
The DX-W2/W3/W5 locking models list holding force (tensile strength when locked) up to 1300 N; that rating does not apply to the non-locking DX-D2/D3. The separately listed positive-opening or forced-disengagement force and travel are not guard-holding ratings. Mechanical life exceeds 1,000,000 cycles and electrical life ranges from 150,000 to 300,000 cycles depending on model. Check the exact model and duty conditions before selecting for frequent operation.
What IP rating do the DX series interlocks have and where can they be installed?
The listed IP67 protection excludes the actuator-key opening; the DX-D2/D3 selection table lists a resin head. Its current factory specifications give −20 °C to +60 °C without freezing and humidity below 85% RH. Keep dust, coolant and cleaning jets out of the key opening rather than treating IP67 as unrestricted washdown suitability. The DX-W2 table also lists −20 °C to +60 °C without freezing; consult the exact model's data and installation conditions for other variants.
How many contact configurations and key directions does the DX series support?
Contact configurations depend on the model: DX-W5 offers 4 combinations with 6 contact sets, DX-W3 offers 6 combinations, and DX-W2 offers 14 combinations with 4 contact sets. The current DX-D2/D3 standard list contains four ordering codes: DX-D2-CO (1NC+1NO), DX-D2-2C (2NC), DX-D3-2CO (2NC+1NO) and DX-D3-3C (3NC). D2 has two contacts per switch and D3 has three. Separately, the adjustable head permits up to eight insertion directions and the catalogue shows eleven DX-K key variants. Contact count, ordering configurations, insertion directions and key models are different quantities; check the actual door geometry and installation drawing.
Author background: Engineer Cai, Senior Application Engineer. DX-D2/D3 designed to IEC/EN 60947-5-1 and GB 14048.5-2017 — see certificates.
Safety Light Curtain — Customer Cases
Real installations from DAIDISIKE clients. Click any case to view in full. Filter by scenario to quickly find a similar setup.