Omron CP1W-DA021 — CP1W 2-Ch Analog Output, V or I
SKU: CP1W-DA021USD 98.00
CP1W 2-channel analog output for CP1L/CP1H/CP1E. -10 to +10 V or 4-20 mA per channel. 1/4000 resolution, 1 ms per point.
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Product Overview
The Omron CP1W-DA021 adds two analog outputs to a CP1L, CP1H, or CP1E PLC. Pick it when a CP1 build needs to drive a variable-frequency drive, a proportional valve, or a panel meter with a 4-20 mA or 0-10 V command from ladder logic.
Each of the two channels (CIO 2 / CIO 3) takes its output range independently. Set per channel: 1-5 V, 0-5 V, 0-10 V, -10 to +10 V, or 4-20 mA (current sink). Resolution is 12-bit (1/4000 of full scale). D/A conversion runs in 1 ms or less per point; both channels are refreshed in about 5 ms total. Accuracy is plus or minus 0.3 percent of full scale on voltage outputs and plus or minus 0.5 percent on current outputs. Output hold keeps the last value on PLC error or run/stop transition.
The unit drops onto a CP1W expansion chain -- mount directly on the CPU or on a CP1W expansion I/O unit, right-hand side, using the 16-pin flat expansion cable. Connection to the field is via the removable screw-terminal block (M3.5, 0.5 Nm torque). VOUT1 / VOUT2 are the analog output pins; COM1 / COM2 are the common pins for current loops.
Setup is in CX-Programmer (PLC Setup -> Built-in I/O / Expansion I/O -> CP1W-DA021). Each channel's range, output hold, and scaling are set per channel without rebooting the CPU.
Key Features
- CP1W-series Special I/O 2-channel analog output unit for CP1L / CP1H / CP1E CPUs
- Per channel output range, independently selectable: 1-5 V / 0-5 V / 0-10 V / -10 to +10 V / 4-20 mA
- 12-bit (1/4000) D/A resolution per channel
- D/A conversion in 1 ms or less per point (about 5 ms per unit)
- Accuracy plus or minus 0.3 percent full scale on voltage, plus or minus 0.5 percent on current
- Output hold function on CPU error / run-stop transition
- Removable screw terminal block (M3.5, 0.5 Nm torque) for VOUT1 / VOUT2 / COM1 / COM2
- Drops onto a CP1W expansion chain via the 16-pin flat expansion cable on the right-hand side
- 100 mA at 5 VDC from the CP1W expansion connector
- Mount directly to the CP1 CPU or stack via CP1W-8E[] / CP1W-20ED[R/D/T] expansion unit
- Setup in CX-Programmer PLC Setup without ladder changes -- range and scaling per channel
- Approvals: CE / cULus / KC (KCC-REM-OMR-CP1W-0013) -- Made by OMRON Corporation
- SKU: CP1W-DA021
- Series: CP1W-series Special I/O Analog Output Unit
- Voltage: 1 TO 5 V
- I/O: 2 I/O
Best-Fit Applications
- Drives a variable-frequency drive on a packaging conveyor with a 0-10 V speed command
- Proportional hydraulic / pneumatic valve command from a CP1H / CP1L ladder program at 4-20 mA
- Replacing a 4-20 mA panel meter setpoint with a CP1W analog output in a retrofit build
- Two-loop PID output on a CP1H-XA with built-in analog I/O plus a DA021 expansion channel
- Test bench command signals to a third-party controller using a CP1L as the signal source
- Pair with a CP1W-AD041 analog input for closed-loop position / pressure setpoint control
Buying Checklist
- Pick the CP1W-DA021 when the CP1L / CP1H / CP1E needs 2 analog output channels without a 4-channel card
- Pick the CP1W-MAD44 (4-in + 4-out analog) when the cabinet also needs 4 analog inputs alongside the outputs
- Pick the CJ1W-DA041 instead for a CJ-series 4-channel analog output (mixed with the CJ1W rack)
- Pick the CP1W-MAB221 / CP1W-DAB21V analog option boards for a CP1L-EM / CP1L-EL CPU option slot instead of an expansion chassis
- Pick the CP1H-YA / XA series when the build also wants 2 analog outputs already on-board (no expansion needed)
- Confirm the field device takes 4-20 mA current sink or 0-10 V voltage; the DA021 cannot drive a 0-20 mA current source directly
Technical Specifications
| Series | CP1W-series Special I/O Analog Output Unit |
|---|---|
| Model | CP1W-DA021 |
| Output Channels | 2 channels (CIO 2 / CIO 3) |
| Output Ranges (Voltage) | 1 to 5 V / 0 to 5 V / 0 to 10 V / -10 to +10 V (per-channel selectable) |
| Output Ranges (Current) | 4 to 20 mA (current sink), per-channel selectable |
| Resolution | 12-bit (1/4000) per channel |
| Conversion Time | 1 ms or less per point (about 5 ms per unit cycle) |
| Accuracy | Plus or minus 0.3 percent FS (voltage) / Plus or minus 0.5 percent FS (current) |
| Output Hold | Per-channel hold of last value on CPU error / run-stop transition |
| Connection | Removable screw terminal block, M3.5, 0.5 Nm torque |
| Current Draw | 100 mA at 5 VDC from CP1W backplane |
| Configuration | CX-Programmer PLC Setup -- range and scaling per channel |
Resources & Downloads
FAQ for CP1W-DA021
Does the CP1W-DA021 support both voltage and current output?
Yes, per channel independently. Each of the two channels (CIO 2 / CIO 3) can be set to 1-5 V, 0-5 V, 0-10 V, -10 to +10 V, or 4-20 mA via CX-Programmer PLC Setup. The field wiring follows the chosen range: VOUT1 / VOUT2 are the output pins, COM1 / COM2 are the commons for current-loop loops. Mixing one channel as voltage and the other as current on the same DA021 is allowed.
What resolution does the CP1W-DA021 give?
12-bit (1/4000) for both voltage and current outputs. At 0-10 V this is about 2.5 mV per step; at 4-20 mA this is about 4 uA per step. For higher resolution (up to 1/6000 or 1/16000), use the CJ1W-DA042V or NX-DA2603 / NX-DA3603 instead.
Can I add a CP1W-DA021 to a CP1L-EM30DT-D CPU?
Yes. Drop the DA021 to the right of the CPU or to the right of a CP1W-8E[] / 20ED[R/D/T] expansion unit. The 16-pin flat expansion cable carries the 5 VDC backplane and the analog signal bus. The CP1L-EM30DT-D supports up to three CP1W expansion units, so the DA021 plus one or two more (for example a CP1W-8ET + CP1W-AD041) all sit in the same chain.
Does the CP1W-DA021 hold its last value when the CPU stops?
Yes, if output hold is enabled in CX-Programmer PLC Setup (the H9 / H10 setting). On CPU error or RUN-to-STOP transition, the DA021 latches the last commanded value on each output. Disable output hold if you want the output to drop to 0 V / 0 mA on CPU stop (for fail-safe shutdown of a downstream valve or drive).
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