Part of the Omron CP-Series Compact PLCs series — see the full model table, lifecycle status and replacement parts.
Omron CP1W-8ET — 8 Point NPN Output
SKU: CP1W-8ETUSD 35.00
CP1W 8-point NPN sink transistor output expansion for CP1L / CP1H / CP1E / NSJ CPUs, 0.3 A per point, 4.5-26.4 VDC, 0.1 ms response.
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Product Overview
The Omron CP1W-8ET is an 8-point NPN (current-sinking) transistor output expansion unit for the CP1W series. 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.
0.1 mA max output leakage Each output: 0.3 A max at 4.5-26.4 VDC load 1.6 A max per common (8 points shared common) 0.1 ms ON / 0.4 ms OFF response time
Key specs: Output Points 8 sinking (NPN) transistor outputs; Load Voltage 4.5 to 26.4 VDC; Output Current 0.3 A per point, 1.6 A per common max; Response Time ON 0.1 ms max / OFF 0.4 ms max; Leakage Current 0.1 mA max; Connection Removable M3 screw terminal block; Required Cable CP1W-CN811 (sold separately, 80 mm right-to-left); Dimensions 66 x 90 x 50 mm (H x W x D).
Key Features
- 0.1 mA max output leakage
- Each output: 0.3 A max at 4.5-26.4 VDC load
- 1.6 A max per common (8 points shared common)
- 0.1 ms ON / 0.4 ms OFF response time
- SKU: CP1W-8ET
- Series: CP1W digital expansion unit
- Voltage: 4.5 TO 26.4 VDC
- I/O: 8 I/O
Best-Fit Applications
- Output block on a CP1H-X40DR-A machine retrofitted to a sensor-heavy design
- Adding 8 solenoid outputs to a CP1L-EL20DR-D control cabinet
- Driving small 24 VDC relays from a CP1E-N40DR-A PLC
Buying Checklist
- Choose CP1W-8ET1 for PNP source output to match a DT1 (sourcing) CPU body polarity.
- Choose CP1W-20EDT when both extra inputs and 16 sink outputs are needed in one slot.
- Choose CP1W-16ER for 16-point relay outputs when the load is mixed AC mains and 24 VDC.
Technical Specifications
| Series | CP1W digital expansion unit |
|---|---|
| Output Points | 8 sinking (NPN) transistor outputs |
| Load Voltage | 4.5 to 26.4 VDC |
| Output Current | 0.3 A per point, 1.6 A per common max |
| Response Time | ON 0.1 ms max / OFF 0.4 ms max |
| Leakage Current | 0.1 mA max |
| Connection | Removable M3 screw terminal block |
| Required Cable | CP1W-CN811 (sold separately, 80 mm right-to-left) |
| Dimensions | 66 x 90 x 50 mm (H x W x D) |
| Mounting | DIN-rail (TR35-15Fe IEC 60715) or M4 panel screws |
| Operating Temperature | 0 to 55 degC |
| Compatible CPUs | CP1E, CP1L, CP1H, NSJ, CPM2A |
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 CP1W-8ET
What is the difference between CP1W-8ET and CP1W-8ET1?
The CP1W-8ET is NPN (current-sinking) output - the transistor pulls the load to 0 V. The CP1W-8ET1 is PNP (current-sourcing) output - the transistor switches the positive rail to the load. Match the polarity to the CPU: a DT (sink) CPU pairs with the 8ET, a DT1 (source) CPU pairs with the 8ET1.
Does the CP1W-8ET need a CP1W-CN811 cable?
Yes. The CP1W-8ET does not bus to the CPU directly. A flat CP1W-CN811 connecting cable (sold separately, 80 mm long) is required to bridge the unit to the CPU or to the previous CP1W expansion module. CX-Programmer is not required to commission the unit - the I/O appears in the CPU's I/O table automatically once the cable is connected.
How many CP1W-8ET units can I mount on one CPU?
Up to 3 CP1W expansion units on a CP1E / CP1L / CP1H CPU, with a ceiling of 15 input words and 15 output words occupied across all CP1W expansions. A CP1L EM40DT1-D can host three 8ET units (24 sink outputs total) within its 160-point budget; a CP1H can host up to seven CP1W expansions but the I/O count ceiling is the same.
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