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Part of the Omron CJ-Series PLCs series — see the full model table, lifecycle status and replacement parts.

Omron CJ1W-OD212 16-point 24 VDC PNP sourcing output — front view showing the 18-position removable screw terminal block with the orange LED status indicator row above each output terminal, and the unit green status LED

Omron CJ1W-OD212 — 16 Pt PNP Output, Short Circuit Alarm

SKU: CJ1W-OD212

USD 49.00

CJ-series 16-point 24 VDC PNP (sourcing) transistor output unit with removable terminal block and load short-circuit protection per point

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Product Overview

The Omron CJ1W-OD212 is Omron's 16-point 24 VDC PNP (sourcing) transistor output unit for CJ-series PLCs, distinguished from the standard CJ1W-OD211 (NPN sinking) by its PNP sourcing topology and built-in load short-circuit protection with alarm flag. 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.

Each output drives 0.5 A continuous at 24 VDC, and the unit as a whole can deliver up to 5.0 A simultaneously. If any output shorts to ground, the unit detects the overcurrent within ~100 ms, latches that output OFF, and raises an alarm flag in CJ I/O memory that the PLC program can read to pinpoint the faulted channel — eliminating the burned-out triac / transistor that would otherwise be the failure mode of an unprotected output bank.

When the PLC program sets the output bit, the internal transistor closes between +24 VDC and the output point, sourcing current INTO the load.

Key Features

  • Leakage current 0.1 mA max
  • Residual voltage 1.5 V max
  • CJ-series 16-point 24 VDC PNP transistor output unit
  • 0.5 A per point continuous, 5.0 A per unit total
  • SKU: CJ1W-OD212
  • Series: CJ1W I/O Basic Units (CJ-series expansion I/O)
  • Voltage: 24 VDC
  • I/O: 16 points

Best-Fit Applications

  • Heating element control via SSR — 16 Omron G3NA-210B-UTU DC5-24 or G3PE-225B DC12-24V solid-state relays, where the OD212's PNP sourcing.
  • Pneumatic gripper actuation on a pick-and-place gantry — 8 PNP gripper open/close solenoid pairs, plus 8 spare channels for the.
  • Solenoid-valve bank on a horizontal form-fill-seal packaging machine — 16 PNP pneumatic solenoid valves for sealing jaws, diverters, and cut-off.

Buying Checklist

  • Pick CJ1W-OD261/OD262 for 64-pt NPN sinking — for I/O-dense panels with no need for PNP
  • Pick CJ1W-OD232 for 32-pt PNP sourcing with MIL connector — for higher-density panels, also has short-circuit protection
  • Pick CJ1W-OD213 for 16-pt NPN high-speed 15 µs output — for pulse-train stepper or servo pulse command, no short-circuit alarm

Technical Specifications

Model CJ1W-OD212
Series CJ1W I/O Basic Units (CJ-series expansion I/O)
Type 16-point 24 VDC PNP (sourcing) transistor output unit with short-circuit alarm
Output Points 16 points
Common Configuration 1 common (all 16 points share one COM terminal)
Output Type PNP (sourcing) — switches +24 VDC to the load
Rated Load Voltage 24 VDC
Operating Load Voltage Range 20.4 to 26.4 VDC
Maximum Load Current 0.5 A per point, 5.0 A per unit
Leakage Current (OFF state) 0.1 mA max
Residual Voltage (ON state) 1.5 V max
Internal Current Consumption 100 mA at 5 VDC (from CJ bus)
Mounting CJ-series DIN-rail mount, occupies one slot on CJ bus
Dimensions (W x H x D) 31 × 90 × 89 mm
Operating Temperature 0 to +55 °C

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 CJ1W-OD212

What's the difference between CJ1W-OD212 and CJ1W-OD211?
Both are 16-point 24 VDC 0.5 A transistor output units with the same removable terminal block and the same 5 A per-unit total rating. The differences are: (a) Output type — OD211 is NPN (sinking, switches 0V to the load), OD212 (this SKU) is PNP (sourcing, switches +24 VDC to the load). (b) Short-circuit protection — OD212 has per-output current detection + alarm flag, OD211 has no such protection (will burn out on a sustained short circuit).
How does the short-circuit alarm work on the CJ1W-OD212?
Each of the 16 outputs on the CJ1W-OD212 has a current-sense comparator that monitors the output transistor's current.
Can I mix PNP and NPN outputs on the same CJ1W-OD212?
No — all 16 outputs on a CJ1W-OD212 are PNP sourcing. The unit has only one COM terminal (shared 0V return for all 16 outputs), so all 16 outputs source +24 VDC from the unit's internal high-side switch. For a mixed panel with both PNP and NPN outputs, you need two separate units: CJ1W-OD212 (PNP sourcing) + CJ1W-OD211 (NPN sinking).
Is the CJ1W-OD212 compatible with NJ-series CPUs like the NJ501-1400?
Yes — the CJ1W-OD212 is fully compatible with NJ101, NJ301, and NJ501-series CPUs as a CJ-series expansion I/O unit on the CJ1W-PA@@@ / CJ1W-PD@@@ power supply + CJ1W-IC101 + CJ1W-II101 expansion rack. The NJ CPU treats the CJ1W-OD212 as a standard CJ I/O unit, allocating 1 CIO word (16 output bits) in the I/O map.

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