EYC DPT02-E Digital Universal Input Signal Converter is a DIN-rail signal converter designed to scale and isolate field signals for PLC, SCADA and instrumentation systems. It accepts multiple input types (mA, V, RTD, thermocouple and resistance) and converts them to standard outputs. This -E version provides one analogue output, RS-485 Modbus RTU and a transistor (PNP/NPN) output interface.
🔧 Technical Highlights:
- Universal inputs: DC voltage (0-10 V, 2-10 V, 0-1 V, 0-5 V, 0.2-1 V, 1-5 V); DC current (0-20 mA, 4-20 mA); RTD (Pt10, Pt20, Pt50, Pt100, Pt200, Pt250, Pt300, Pt400, Pt500, Pt1000; 2/3/4-wire); thermocouple (B, E, J, K, N, R, S, T, U; internal cold junction compensation); linear resistance (0-10 kΩ); potentiometer (10-100 kΩ).
- Analogue output ranges: current (0-20 mA, 4-20 mA, 20-0 mA, 20-4 mA) and voltage (0-1 V, 0.2-1 V, 0-5 V, 1-5 V, 0-10 V, 2-10 V, 1-0 V, 1-0.2 V, 5-0 V, 5-1 V, 10-0 V, 10-2 V).
- Outputs: 1 analogue output (A.OUT1) on terminals 11 (-) and 12 (+); RS-485 on terminals 13 (D-) and 14 (D+); transistor interface on terminals 21 (GND-), 22 (NPN), 23 (PNP) and 24 (VCC+).
- Digital outputs: NPN/PNP transistor output option with VCC and GND terminals for interfacing to control inputs.
- RS-485 communication: Modbus RTU (master or slave), baud rates 9600 to 115200 bps.
- Display & setup: 3-digit LED display (-199 to +999), 0-2 decimal places, keypad programming; sampling 4 cycles/sec; response time adjustment 0.5-60 sec.
- Analogue output performance: 16-bit resolution; load resistance for current output < 500 Ω; voltage output load ≥ 10 kΩ; signal error detection supported.
- Power & auxiliary supply: 85-253 V AC supply; auxiliary output 16-25 V DC, 23 mA for 2-wire/3-wire transmitters.
- Isolation: galvanic isolation between power supply, analogue input, analogue output and RS-485.
- Power connections: 85-253 V AC on terminals 31 and 34.
- Input & excitation terminals (1-4): 1 = +TC / Pt(b) (RTD 3/4-wire); 2 = -mA / -V / -TC / Pt(B) (RTD 2/3/4-wire) / Potm.1 / Lin.R; 3 = +mA / Pt(A) (RTD 2/3/4-wire) / Potm.3 / Lin.R; 4 = +exc. / +V / Pt(a) (RTD 4-wire) / Potm.2. Typical wiring: mA input on 2(-) & 3(+); V input on 2(-) & 4(+); thermocouple on 1(+) & 2(-); potentiometer on 2/4/3; auxiliary transmitter supply on 4(+V) & 2(-V).
- Environment & build: operating -10 to +60 °C, 0-95% RH (non-cond.); IP20; ABS UL94V-0; 99.5 x 25.5 x 104.2 mm; approx. 158 g.
- Calibration: 20-point linear calibration function.
✅ Benefits:
- Converts many sensor and transmitter signals to standard analogue outputs to simplify panel design
- Built-in galvanic isolation helps prevent ground loops and improves measurement stability
- Local LED display and keypad make scaling and diagnostics quicker during commissioning
- DIN-rail form factor saves space in control panels
- 20-point linear calibration supports fine tuning for demanding processes
🚀 Applications:
- Factory automation signal conditioning
- Energy, water circulation and process skids
- Oil & gas and marine instrumentation panels
- Metal, cement, pulp & paper and chemical plants
- Food & beverage and pharmaceutical process control
Designed for stable, isolated signal conversion, DPT02 helps deliver reliable measurements and control signals in industrial automation environments.
FAQs
- Q: What are the PNP/NPN terminals on DPT02-E?
A: The transistor interface uses terminal 21 (GND-), terminal 22 (NPN), terminal 23 (PNP) and terminal 24 (VCC+).
- Q: How do I wire the analogue output and RS-485 on DPT02-E?
A: Wire A.OUT1 on terminals 11 (-) and 12 (+). Wire RS-485 D- to terminal 13 and D+ to terminal 14 for Modbus RTU communication.