Part of the Omron CK3M / CK3W Axis & I/O Units series — see the full model table, lifecycle status and replacement parts.
Omron CK3W-MD7110 — 16-In / 16-Out Digital I/O
SKU: CK3W-MD7110USD 441.00
16-in / 16-out NPN digital I/O for CK3M / CK5M, 24 VDC, push-in terminal. In stock, China.
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Product Overview
The Omron CK3W-MD7110 is a CK3W-series Digital I/O Unit with 16 inputs and 16 NPN outputs for the CK3M and CK5M Programmable Multi-Axis Controllers It is manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.
Inputs and outputs both run at 24 VDC, and the outputs switch up to the CK3M / CK5M servo cycle of 25 us per 5 axes for deterministic actuation. The push-in terminal block accepts solid, stranded, and ferrule wires without tools.
Body size is 31.6 x 90 x 80 mm at 143 g. Key specs: Inputs 16 digital inputs, 24 VDC; Outputs 16 NPN digital outputs, 24 VDC; Rated Input Voltage 24 VDC; Output Type NPN open collector; Cycle Synchronization 25 us / 5 axes with CK3M / CK5M; External Connection Push-in terminal block (screwless); Power Consumption 1.0 W max at 5 VDC; Dielectric Strength 510 VAC for 1 minute between isolated circuits.
Key Features
- CK3W-series Digital I/O Unit for CK3M / CK5M motion controllers
- 16 DC inputs + 16 NPN outputs, 24 VDC rated, push-in terminal block
- Synchronized to the CK3M / CK5M 25 us servo cycle for high-speed actuation
- 31.6 x 90 x 80 mm, 143 g, IP20, cULus / EN 61326 / RCM / KC / EAC
- SKU: CK3W-MD7110
- Series: CK3W-series Digital I/O Unit
- Voltage: 24 VDC
Best-Fit Applications
- CNC router where the CK3W-MD7110 handles the auxiliary I/O for tool-change, coolant pump, and limit-switch feedback alongside the G-code motion path.
- Semiconductor wafer-handling robot where 16 inputs capture vacuum and proximity feedback and 16 outputs actuate end-effector solenoid valves.
- Multi-station assembly press where the 16 outputs synchronize light-stack indicators and ejector pins with the press motion profile.
Buying Checklist
- Choose the CK3W-MD7120 instead when PNP sourcing outputs are required for the same load class.
- Choose the CK3W-MD7110 when the cabinet needs 16 NPN outputs synchronized to the CK3M / CK5M 25 us servo cycle.
- Verify the push-in terminal block accepts 0.5 mm² stranded wire for clean tool-free replacement during commissioning.
Technical Specifications
| Series | CK3W-series Digital I/O Unit |
|---|---|
| Inputs | 16 digital inputs, 24 VDC |
| Outputs | 16 NPN digital outputs, 24 VDC |
| Rated Input Voltage | 24 VDC |
| Output Type | NPN open collector |
| Cycle Synchronization | 25 us / 5 axes with CK3M / CK5M |
| External Connection | Push-in terminal block (screwless) |
| Power Consumption | 1.0 W max at 5 VDC |
| Dielectric Strength | 510 VAC for 1 minute between isolated circuits |
| Insulation Resistance | 20 MOhm min at 100 VDC |
| Operating Temperature | 0 to 55 degC, 10 to 95 percent (no condensation) |
| Dimensions | 31.6 x 90 x 80 mm, 143 g, IP20 |
Manufacturer documentation
Omron's own product page, where the manufacturer's current specification and lifecycle information are published. We are an independent distributor and cannot mirror those documents; the link goes to Omron's site.
FAQ for CK3W-MD7110
Does the CK3W-MD7110 need a CK3M or CK5M controller?
Yes - the CK3W-MD7110 mounts only on a CK3M or CK5M Programmable Multi-Axis Controller, not on a CJ, NJ or NX CPU. The MD7110 uses the CK-bus expansion bus and the 25 us servo cycle. For standard PLC cabinets, use NX-MD6121-5 or NX-OD4256 instead.
What is the difference between CK3W-MD7110 and CK3W-MD7120?
The MD7110 is the NPN output version. The MD7120 is the PNP output version with the same 16 inputs / 16 outputs layout. Pick by the input / output common the machine uses. The mechanical size and wiring block are identical between the two.
Can the CK3W-MD7110 be synchronized with motion events?
Yes - the 16 outputs can be triggered by motion-event logic in the CK3M / CK5M controller, including cam switches, position triggers, and error-stop events. Synchronization to the 25 us servo cycle keeps output jitter under one cycle for high-speed packaging and semiconductor applications.
Is the CK3W-MD7110 safety-rated?
No - the CK3W-MD7110 is a standard (non-safety) I/O module. For safety I/O on the CK platform, use the NX-SL3300 Safety CPU on a separate NX-ECC203 EtherCAT sub-node. Safety devices like E-stops and interlocks must run on the FSoE subnet, not on the CK3W bus.
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