DX-C1 Magnetic Coded Safety Switch

Name: DX-C1 Magnetic Coded Safety Switch
Brand: DAIDISIKE
SKU: dx-c1-magnetic-coded-safety-switch

Non-contact coded-magnet safety switch with 17 mm sensing range and high misalignment tolerance for guard doors.

▶ Watch it in action: Safety Light Curtain + Guard-Locking Door Switch Interlock — Wiring Demo

DX-C1 Magnetic Coded Safety Switch - dimensional drawing

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Technical Specifications

Output type	Magnetic reed-type contact: 2C = two NC contacts / 1C1O = one NC + one NO contact / 2O = two NO contacts
Connection type	A = direct 2 m pre-wired cable / B = quick-disconnect (aviation-style) connector
Sensing distance	Up to 17 mm in the Z direction and Y direction
Ingress protection	IP65 (IP67/IP68 available on custom order)
Safety design level	ISO 13849-1, designed for use in circuits up to PLe / Cat. 4
Working principle	Multiple magnetically sensitive elements triggered in a defined sequence; multiple switches can be connected in series

Overview

DX-C1 is a two-part non-contact safety switch consisting of a sensor head and a coded-magnet actuator, mounted on the fixed frame and the movable guard respectively. Inside the sensor, multiple magnetically sensitive elements must be triggered in a defined sequence for the switch to operate — a plain magnet placed against the sensor will not actuate it.

It outputs through contacts in three configurations (2 NC / 1 NC + 1 NO / 2 NO) and is intended for machine builders and panel integrators who need to monitor the position of hinged doors, sliding guards, or removable guard panels as part of a machine safety circuit, typically feeding a safety relay or safety PLC.

Features & Benefits

Coded-magnet actuation resists simple defeat

Multiple magnetically sensitive elements inside the switch must be triggered in a defined sequence before it will operate; a single ordinary magnet placed against the housing does not actuate it, which is the key difference from a plain reed-type door magnet.

Large 17 mm sensing range with high misalignment tolerance

Sensing distance up to 17 mm in both the Z and Y directions gives generous installation and operating tolerance, so the switch continues to actuate reliably even when a guard door has sagged, the track has worn, or the panel is slightly out of alignment.

Three contact output configurations for flexible circuit design

Available as 2 NC (two normally closed), 1 NC + 1 NO, or 2 NO, so integrators can wire dual-NC channels straight into a safety relay while using an NO contact for status/PLC indication, matched to the specific safety circuit design.

Designed for use in circuits up to PLe / Cat. 4 per ISO 13849-1

The switch is CE marked and designed for use in safety circuits rated up to Performance Level e, Category 4 under ISO 13849-1, suitable for high-demand guard interlocking applications when combined with an appropriately rated safety relay or logic solver.

Series connection reduces wiring for multi-door lines

Multiple DX-C1 switches can be connected in series, allowing several guard doors on a line to be monitored through a single safety relay input, cutting the number of I/O points and cable runs.

Two connection styles to match maintenance workflow

Available with a 2 m pre-wired cable (A version) or a quick-disconnect connector (B version), so a failed switch on the B version can be swapped without re-wiring the panel.

Sealed, flame-retardant IP65 housing

The switch body is molded from flame-retardant thermoplastic and rated IP65 as standard, with IP67/IP68 available on request for wash-down or heavier contamination environments; the non-contact sensing design has no exposed mechanical contacts or plug apertures where dirt can accumulate on the sensing face.

Applications

Hinged access door position monitoring — A slight sag or installation misalignment on a hinged access door does not affect detection, since the 17 mm sensing distance and high misalignment tolerance are designed for this kind of application.

Sliding guard door interlocking — The non-contact structure avoids the wear-related failures of mechanical sliding contacts, while coded-magnet actuation prevents simple defeat with an ordinary magnet.

Removable guard panel monitoring — No mechanical alignment precision is required, and the large installation tolerance suits panels that are frequently removed and refitted.

Multi-door production line safety circuits — Multiple switches can be connected in series so several guard doors share a single safety relay input, simplifying control-cabinet wiring.

Retrofitting machines with vibration or misalignment issues — The high misalignment tolerance reduces the on-site labor needed to repeatedly re-adjust switch position on older or vibration-prone equipment.

Panels requiring quick switch replacement without downtime — The B version's quick-disconnect connector supports plug-in replacement on lines where fast switch swaps are needed.

Safety circuits paired with a safety relay — The 2 NC contact output wires directly into the dual-channel monitoring input of a safety relay, such as the manufacturer's own DQSRN/DA31 series.

Models & Ordering Information

A version — 2 m pre-wired cable

DX-C1-2O-P1ADX-C1-1C1O-P1ADX-C1-2C-P1A

2O = 2 NO contacts; 1C1O = 1 NC + 1 NO; 2C = 2 NC contacts.

B version — quick-disconnect connector

DX-C1-2O-P1BDX-C1-1C1O-P1BDX-C1-2C-P1B

2O = 2 NO contacts; 1C1O = 1 NC + 1 NO; 2C = 2 NC contacts.

How to Select

Choose 2C (two NC contacts) when both channels need to be normally closed for direct connection to the dual-channel monitoring input of a safety relay — the standard configuration for a safety circuit.
Choose 1C1O (one NC + one NO) when one normally closed channel feeds the safety circuit and the normally open channel is used for door-position status feedback to a PLC or controller.
Choose 2O (two NO contacts) for non-safety position detection/status indication applications; whether it can be used in a safety circuit depends on the specific safety-level requirement and is not separately specified by the manufacturer.
Choose the A version (2 m pre-wired cable) for fixed installations that are not frequently removed.
Choose the B version (quick-disconnect connector) when fast switch replacement with minimal re-wiring and downtime is needed.
The standard IP65 rating covers general industrial environments; for wash-down, dust, or higher-moisture environments, request the custom IP67/IP68 option.
If the guard door sags slightly, vibrates, or has installation misalignment, the 17 mm (Z/Y direction) sensing distance and high misalignment tolerance reduce the risk of nuisance stops without extra mechanical fine-adjustment.
For single-point position monitoring, one switch paired with a safety relay is sufficient; for multi-door lines, multiple DX-C1 switches can be connected in series to share a single safety relay input.

📘 Need the full method? How to Choose a Safety Door Switch / Interlock

When NOT to specify the DX-C1 — and what to use instead

The guard must remain physically locked shut while the machine coasts down or retains stored energy after the stop command.

Why not: DX-C1 is a position-monitoring switch only -- it has no locking mechanism, so it cannot hold the door closed once it is unlatched.

Use instead: DX-D6 guard-locking safety-door switch, or a DX-W2/DX-W3/DX-W5 solenoid door lock

Operators are likely to attempt bypass with a substitute actuator and the risk assessment calls for the highest coding/tamper-resistance level.

Why not: DX-C1's coded-magnet actuation resists a plain magnet, but the published spec does not classify it to an ISO 14119 coding level (Low/High), unlike the RFID-coded DX-R1, which is explicitly offered in a uniquely-coded (D, High level coded) version.

Use instead: DX-R1 non-contact safety switch, D (uniquely coded) version

The safety function must be formally validated (SISTEMA/PFHd calculation) or a specific certificate number cited in the machine's technical file.

Why not: DX-C1 is only described as designed for use in circuits up to PLe/Cat.4 under ISO 13849-1; no PFHd/B10d/MTTFd figures or certificate number are published, and certification documents are supplied only on request.

Use instead: Request the certification package from the factory before specifying, and validate the complete circuit together with a DA31 or DQSRN safety relay

The guard door is exposed to washdown, coolant spray, or heavy dust beyond general industrial conditions.

Why not: Standard DX-C1 units are rated IP65; IP67/IP68 is only available as a custom order, not a stocked catalog option.

Use instead: Order the custom IP67/IP68 DX-C1 variant, or specify the standard-IP67 DX-D2/DX-D3 mechanical switch

The circuit needs a documented electrical contact rating (voltage/current) or a published mechanical/electrical cycle life to size the downstream relay or estimate service life.

Why not: DX-C1's datasheet gives sensing distance, output configuration, and IP rating, but does not publish a contact voltage/current rating or a mechanical/electrical operations count.

Use instead: DX-D2/DX-D3, which publish Ui 400V/Ith 8A/Ue AC400V/Ie 2A ratings and a 1,000,000/300,000 mechanical/electrical life

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Sensor operating voltage and power/current draw
Response (switching) time
Overall housing dimensions and mounting-hole pattern
PFHd / B10d / MTTFd reliability figures
Certificate number and scope for the CE / ISO 13849-1 design basis
Electrical contact rating (voltage/current) of the reed-type contacts
Approach speed / minimum safety-distance guidance for ISO 13855 calculations

Frequently Asked Questions

What makes DX-C1 different from a simple magnetic door sensor?

DX-C1 uses coded-magnet actuation — it contains multiple magnetically sensitive elements that must be triggered in a defined sequence before the switch will operate. A single ordinary magnet held against the housing will not actuate it, unlike a basic reed-type door sensor.

What is the maximum sensing distance of DX-C1?

The sensing distance is up to 17 mm in both the Z direction and the Y direction, giving relatively high tolerance for misalignment between the sensor and the actuator magnet.

What contact output configurations are available?

Three configurations: 2 NC (two normally closed), 1 NC + 1 NO (one normally closed, one normally open), and 2 NO (two normally open), selectable at the time of ordering via the model code.

Can multiple DX-C1 switches be wired together?

Yes. Multiple DX-C1 switches can be connected in series, allowing several guard doors to be monitored through a single safety relay input.

What safety performance level is DX-C1 designed for?

DX-C1 is CE marked and designed for use in safety circuits up to Performance Level e, Category 4 per ISO 13849-1. The achieved performance level of the overall safety function depends on the complete circuit design, including the safety relay/logic solver and wiring, not the switch alone.

What ingress protection rating does DX-C1 have?

IP65 as standard; IP67 or IP68 versions are available on a custom-order basis.

What connection options are available — cable or connector?

DX-C1 is offered in an "A" version with a 2 m pre-wired cable, and a "B" version with a quick-disconnect (aviation-style) plug for faster replacement without re-wiring.

Does DX-C1 lock the guard door, or only monitor its position?

DX-C1 only monitors door position — it does not provide mechanical locking. For applications requiring the guard to be locked closed, a different product in the same safety-door-lock family (DX-D6) is used instead.

How many DX-C1 model variants are offered?

Six model variants, combining three contact configurations (2C / 1C1O / 2O) with two connection types (A: 2 m cable / B: quick-disconnect plug).

What housing material is DX-C1 made from?

A flame-retardant thermoplastic housing, rated IP65 as standard.

Is DX-C1 certified to a specific safety standard?

Certification documents are available on request.

Related Categories and Example Products

Explore other functions that may be needed in a machine or line. The products below are category examples, not pre-validated electrical or safety combinations. Confirm each interface and application separately: Safety Relays · Safety Light Curtains · Safety Mats