Menu

Omron CJ1W-OD202 Transistor Output Unit 8-Point 2A DC12-24V — front view

Omron CJ1W-OD202 — PLC Controller

SKU: CJ1W-OD202

USD 80.00

CJ-series 8-point PNP sourcing transistor output unit, 24 VDC, 2 A per point (4 points per common), removable screw terminal block, short-circuit protection with alarm.

1-Year Warranty Full manufacturer warranty
Global Shipping Worldwide delivery available
Genuine Omron 100% authentic product
Ready to Ship Usually ships within 24h
In Stock

This item is available for immediate shipment from our warehouse.

Request Quote

Contact for pricing, bulk discounts, and shipping

Product Overview

The CJ1W-OD202 is an 8-point PNP sourcing transistor output module for Omron's CJ-series PLC rack (compatible with CJ1, CJ2, CS1, and NJ-series CPU units). Each of the 8 outputs switches 24 VDC at up to 2 A continuous, with two commons of 4 points each. The "sourcing" (PNP) topology means the output transistor sources current from the module's 24 VDC rail out to the load, with the load returning to 0 V (ground). This is the right pick for European-style PNP wiring where the load's negative terminal goes to ground and the positive terminal is switched by the PLC.

How CJ1W-OD202 differs from siblings

The CJ1W-OD family splits along four axes: output type (sinking NPN or sourcing PNP), point count (8, 16, 32, 64), per-point current (2 A or 0.5 A or 0.3 A), and connector type (terminal block, Fujitsu/OTAX, MIL). Within the 8-point family: CJ1W-OD201 is NPN sinking with 2 A/point (no short-circuit protection); CJ1W-OD202 is PNP sourcing with 2 A/point (with short-circuit protection, this SKU); CJ1W-OD203 is NPN sinking with 0.5 A/point; CJ1W-OD204 is NPN sinking with 16 points and 0.5 A/point.

Wiring and electrical installation

The CJ1W-OD202 uses a removable M3 screw terminal block. The terminal layout has 18 positions: 2 commons ("COM0" and "COM1"), 4 output terminals per common, plus the 24 VDC external power supply terminals. Wire each output point to its load: connect the output terminal to the load's positive input, and connect the load's negative to the 24 VDC common (0 V) of the same power supply. Both commons on the OD202 are tied together internally to the module's 24 VDC rail — when the output is ON, the module sources 24 VDC to the load.

Short-circuit protection and diagnostics

The CJ1W-OD202 includes per-point short-circuit detection with a 6 A detection threshold. If an output point sees sustained overcurrent above 6 A (typical of a shorted load or wiring fault), the module disables that point, raises an alarm flag to the CPU, and the corresponding I/O error bit in the CIO area (word n+1 in the allocated area for a module at word n) goes high. The PLC program can read this flag and shut down the machine, log the fault, or alert the operator.

Key Features

  • 8 PNP sourcing transistor outputs at 24 VDC
  • 2 A per point continuous, 8 A per module maximum
  • 4 points per common, 2 commons
  • Per-point short-circuit protection with alarm flag to CPU
  • Removable M3 screw terminal block for fast module replacement
  • ON response 0.5 ms, OFF response 1.0 ms — fast for solenoid-valve switching
  • Leakage current 0.1 mA max, residual voltage 1.5 V max
  • 1 word I/O allocation in CJ-series CIO area
  • SKU: CJ1W-OD202
  • Series: CJ1W-OD (Transistor Output Units for CJ-series PLCs)
  • Voltage: 24 VDC
  • I/O: 8 I/O

Best-Fit Applications

  • Driving 24 VDC solenoid-valve banks on a packaging machine
  • Switching 24 VDC relay coils in a control panel where NPN/PNP wiring requires sourcing outputs
  • Powering 24 VDC indicator lamps and stack lights on a conveyor line
  • Replacing an 8-point relay output module to eliminate relay-coil wear in a high-cycle application

Buying Checklist

  • Pick CJ1W-OD202 for 8 PNP sourcing outputs at 2 A/point with short-circuit protection
  • Pick CJ1W-OD201 for 8 NPN sinking outputs at 2 A/point without short-circuit protection
  • Pick CJ1W-OD203 for 8 NPN sinking outputs at 0.5 A/point
  • Pick CJ1W-OD212 for 16 PNP sourcing outputs at 0.5 A/point
  • Pick CJ1W-OD263 for 64 PNP sourcing outputs at 0.3 A/point with MIL connector
  • Pick CJ1W-OC201 if your loads need a relay output

Technical Specifications

Model CJ1W-OD202
Series CJ1W-OD (Transistor Output Units for CJ-series PLCs)
Type Basic I/O Unit — digital output
Number of Outputs 8
Output Type PNP sourcing transistor (sources current to load)
Rated Load Voltage 24 VDC
Operating Load Voltage Range 20.4 to 26.4 VDC
Maximum Load Current 2 A per point, 8 A per unit
Maximum Inrush Current 10 A per point, 10 ms max
Leakage Current (OFF) 0.1 mA max
Residual Voltage (ON) 1.5 V max
Internal Current Consumption 110 mA max (from CPU backplane)
Terminal Type Removable M3 screw terminal block (18P)
Dimensions (H × W × D) 90 × 31 × 85 mm
Operating Temperature 0 to +55 °C

FAQ for CJ1W-OD202

What does "PNP sourcing" mean on the CJ1W-OD202?
PNP sourcing means the output transistor sources current from the module's 24 VDC rail out to the load. The load's negative terminal returns to 0 V (common). This is the standard European wiring convention. The opposite is "NPN sinking" (CJ1W-OD201) where the output transistor connects the load to 0 V when ON, and the load's positive terminal is tied to the 24 VDC rail.
What's the difference between CJ1W-OD202 and CJ1W-OD201?
Both are 8-point, 2 A-per-point output modules, but the OD201 is NPN sinking (no short-circuit protection), and the OD202 is PNP sourcing (with short-circuit protection). For most new European panels the OD202 is the right pick: PNP wiring is the convention, and the short-circuit protection saves the module from a wiring-fault burn-out. Pick the OD201 only for legacy NPN wiring.
Can the CJ1W-OD202 drive solenoid valves?
Yes — the 2 A per point rating is sufficient for most 24 VDC solenoid valves, which typically draw 0.3–1.0 A. For larger valves (e.g., 5/2 or 5/3 proportional valves drawing 1.5 A or more), use a relay-output module (CJ1W-OC201) or an interposing relay. Add a flyback diode across inductive loads (solenoids, relay coils) to protect the output transistor from the inductive kick when switching off.
What does the short-circuit protection do?
If an output point sees sustained overcurrent above 6 A (typical of a shorted load or wiring fault), the module disables that point, raises an alarm flag to the CPU, and the corresponding I/O error bit in the CIO area goes high. This protects the module from a wiring-fault burn-out. The unprotected CJ1W-OD201 would destroy its output transistor in the same fault scenario.

Similar Products

Explore related Omron models often viewed alongside this product.