The module features built‑in OLED display and touch keys, dual communication (RS485 as standard, optional Ethernet) with Modbus‑RTU / Modbus‑TCP protocol for seamless connection to HMI, PLC and SCADA systems. It is suitable for DC‑bus monitoring, battery‑string inspection, renewable‑energy DC measurement and retrofitting projects.
Key Features
✅ 24‑bit High‑precision True‑RMS Acquisition with Full Isolation Independent 24‑bit ADC per channel, sampling rate up to 1.9K SPS, measurement accuracy better than 0.2%. 2000V AC isolation between 5 channels; isolated differential input offers excellent common‑mode noise rejection. Measuring range covers DC‑1000V~+1000V for both positive and negative DC voltage.
✅ Arbitrary Polarity Connection per Channel Each channel supports free positive/negative wiring polarity, simplifying on‑site installation and reducing wiring errors.
✅ OLED Display with Touch‑key HMI OLED screen shows measurement values for dual channels simultaneously with automatic cyclic display (0‑30s, 0=off). Four touch keys enable full parameter configuration without a host computer. Configurable buzzer and screen‑off time; real‑time readings are visible inside the cabinet.
✅ Flexible Field Calibration Independent offset calibration (−9.0%~+9.0%) for each of the 5 channels to correct field system deviations. Built‑in digital filter (0‑10s adjustable) stabilizes readings under electromagnetic interference.
✅ Dual‑port Industrial Communication Standard RS485, optional Ethernet, compliant with Modbus‑RTU / Modbus‑TCP. 32‑bit float data output via function‑code 04. Modifiable station address (1‑247), baud rate (4800/9600/19200), parity, communication delay and IP / gateway / subnet‑mask parameters, supporting multi‑module distributed acquisition networks.
✅ Industrial‑grade DIN‑rail Design DC24V(±10%) power supply, max power consumption ≤3W. Compact dimension 89 × 40 × 108mm, 35mm DIN‑rail mounting. Operating temperature 0‑50℃, humidity ≤85%RH for continuous cabinet operation.
Main Specifications
| Item | Specification |
|---|---|
| Model | ChipDAQ‑5DV (multi‑channel DC voltage acquisition module) |
| Channels | 5 channels, 2000V AC isolation between channels |
| ADC Resolution | 24‑bit, True‑RMS measurement |
| Sampling Rate | 1.9K SPS per channel |
| Accuracy | <0.2% |
| Input Range | DC‑1000V ~ +1000V (positive & negative DC) |
| Input Type | Isolated differential input; arbitrary per‑channel polarity |
| Power Supply | DC24V ±10% |
| Max Power | ≤3W |
| Display & Operation | OLED display, touch keys, cyclic display / screen‑off / buzzer |
| Communication | RS485 Modbus‑RTU (standard); optional Ethernet Modbus‑TCP |
| Data Output | 32‑bit float, Modbus function code 04 |
| Configuration | Digital filter, per‑channel offset, serial & network parameters |
| Dimension | 89 × 40 × 108mm |
| Mounting | 35mm DIN rail |
| Ambient | 0~50℃, ≤85%RH non‑condensing |
| Model Code | 5DV‑S‑TCP (‑TCP: with Ethernet; ‑N: RS485 only) |
Typical Applications
✅ DC‑side voltage acquisition and monitoring for wind power and solar‑PV systems;
✅ Power dispatching and centralized DC‑bus voltage monitoring;
✅ Battery‑string voltage inspection and DC power‑supply system monitoring;
✅ Acquisition and networking of DC‑voltage signals for industrial equipment;
✅ Expanding multi‑channel DC acquisition points for PLC / Host PC / SCADA systems;
✅ Domestic‑substitution retrofitting projects, replacing imported DC‑voltage acquisition modules.
Selection Notes
✅ 5DV is a DC‑voltage acquisition module, supporting ±1000 V positive‑and‑negative DC input;
✅ Suffix ‑TCP means equipped with Ethernet port; suffix ‑N means RS485 only, no Ethernet port;
✅ OEM and ODM customization services are available.
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