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Signal isolator DT1104 UI RS4galvanic4-20mApolymer
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Characteristics
- Type
- galvanic, signal, 4-20mA
- Material
- polymer
- Electrical characteristics
- current, voltage
- Other characteristics
- USB, configurable
Description
Product features
Product description
The DT1104 UI RS4 galvanic isolator provides galvanic isolation, signal conversion and reliable transmission between field transmitters and signal processing units (PLC, DCS). The device accepts DC current or DC voltage inputs and presents the measured value via an RS485 interface using the MODBUS RTU/ASCII slave protocol.
Up to 32 DT1104 UI RS4 units can be connected on a common RS485 segment without a repeater. Key advantages include reduced need for dedicated PLC/DCS analog modules and a single A/D conversion between isolator input and the processing unit, improving overall measurement accuracy (non-linearity <0.01%, temperature coefficient <25 ppm / °C typically). The isolator also lowers field wiring cost.
The device features three-way galvanic isolation: input, output and power supply are separated. Operating isolation voltage is 250 Veff between input, output and supply; dielectric strength 2500 VDC (1 min.).
Inputs and transmitter supply
A 22 VDC / 24 mA transmitter supply is available at the input for two-wire passive transmitters.
Communication and configuration
The RS485 output allows reading the input value (including physical units) via MODBUS RTU/ASCII slave. Communication parameters, input type, range and scaling can be configured via the galvanically isolated USB port. Front-panel LEDs indicate power and error states.
Devices are available in two power supply variants: DT1104 UI RS4 (24 V ± 10% DC) and DT1104 UI RS4 PS (230 V ± 10% AC/DC).
Technical specifications
Safety: input, output and supply terminals are galvanically isolated in accordance with EN 61010-1. Pollution degree: 2. Measurement category: II.
Input: DC current or DC voltage. Ranges: 0-20 mA, 4-20 mA, 0-10 V, 2-10 V. Continuous overvoltage: 400 mA (current), 100 V (voltage). Input resistance: 10 Ω (current), 102 kΩ (voltage). Transmitter supply: 22 VDC (24 mA). Measurement error related to input: ±0.05% @ 25 °C ±2 °C. Temperature dependence: <25 ppm / °C (typ.). Configuration: via USB.
Output: RS485 interface, galvanically isolated. Protocol: MODBUS RTU / ASCII slave. Supported commands: register block reading. Baud rates: 2400 / 4800 / 9600 / 14400 / 19200 / 38400. Address range: 0–247 (0: no response). Connection: 2 pluggable screw terminal blocks for daisy chain/termination. Max devices per RS485 segment: 32. Settling time: 100 ms.
Galvanic isolation: 250 Veff (input/output/supply); 2500 VDC (1 min.). Power supply: 24 V ± 10% DC (DT1104 UI RS4) or 230 V ± 10% AC/DC (DT1104 UI RS4 PS). Consumption: ≤1.6 W / 2.2 VA (24 V); ≤1.8 W / 2.4 VA (230 V).
Ambient: operating temperature 0–50 °C (optionally -20 to +60 °C); relative humidity ≤90% non-condensing. Installation: cabinet, vertical on TS-35 rail. EMC: EN61326-1 Group 1 Class B emissions; industrial immunity.
General: TS-35 rail-mounted polyamide PA6.6 housing; pluggable screw terminals; wire cross-section 0.25–2.5 mm2; dimensions 12.5 × 99 × 115 mm (W × H × D); weight 0.15 kg; protection IP20.
Key specifications
- 0-20 mA / 4-20 mA / 0-10 V / 2-10 V inputs
- 22 V, 24 mA transmitter power supply for a two-wire transmitter connected to the input
- RS485 communication output with MODBUS RTU/ASCII slave protocol
- three-way isolation
- Input and communication parameters configurable via USB port (USB cable included)
- nonlinearity: <0.01%
- temperature dependence: <25 ppm / °C (typ.)
- 24 V ± 10% DC, 230 V AC/DC ± 10% power supply versions
- 12.5 mm wide, TS-35 rail-mountable terminal housing
Product description
The DT1104 UI RS4 galvanic isolator provides galvanic isolation, signal conversion and reliable transmission between field transmitters and signal processing units (PLC, DCS). The device accepts DC current or DC voltage inputs and presents the measured value via an RS485 interface using the MODBUS RTU/ASCII slave protocol.
Up to 32 DT1104 UI RS4 units can be connected on a common RS485 segment without a repeater. Key advantages include reduced need for dedicated PLC/DCS analog modules and a single A/D conversion between isolator input and the processing unit, improving overall measurement accuracy (non-linearity <0.01%, temperature coefficient <25 ppm / °C typically). The isolator also lowers field wiring cost.
The device features three-way galvanic isolation: input, output and power supply are separated. Operating isolation voltage is 250 Veff between input, output and supply; dielectric strength 2500 VDC (1 min.).
Inputs and transmitter supply
- Current input: 0 (4) – 20 mA*
- Voltage input: 0 (2) – 10 V*
A 22 VDC / 24 mA transmitter supply is available at the input for two-wire passive transmitters.
Communication and configuration
The RS485 output allows reading the input value (including physical units) via MODBUS RTU/ASCII slave. Communication parameters, input type, range and scaling can be configured via the galvanically isolated USB port. Front-panel LEDs indicate power and error states.
Devices are available in two power supply variants: DT1104 UI RS4 (24 V ± 10% DC) and DT1104 UI RS4 PS (230 V ± 10% AC/DC).
Technical specifications
Safety: input, output and supply terminals are galvanically isolated in accordance with EN 61010-1. Pollution degree: 2. Measurement category: II.
Input: DC current or DC voltage. Ranges: 0-20 mA, 4-20 mA, 0-10 V, 2-10 V. Continuous overvoltage: 400 mA (current), 100 V (voltage). Input resistance: 10 Ω (current), 102 kΩ (voltage). Transmitter supply: 22 VDC (24 mA). Measurement error related to input: ±0.05% @ 25 °C ±2 °C. Temperature dependence: <25 ppm / °C (typ.). Configuration: via USB.
Output: RS485 interface, galvanically isolated. Protocol: MODBUS RTU / ASCII slave. Supported commands: register block reading. Baud rates: 2400 / 4800 / 9600 / 14400 / 19200 / 38400. Address range: 0–247 (0: no response). Connection: 2 pluggable screw terminal blocks for daisy chain/termination. Max devices per RS485 segment: 32. Settling time: 100 ms.
Galvanic isolation: 250 Veff (input/output/supply); 2500 VDC (1 min.). Power supply: 24 V ± 10% DC (DT1104 UI RS4) or 230 V ± 10% AC/DC (DT1104 UI RS4 PS). Consumption: ≤1.6 W / 2.2 VA (24 V); ≤1.8 W / 2.4 VA (230 V).
Ambient: operating temperature 0–50 °C (optionally -20 to +60 °C); relative humidity ≤90% non-condensing. Installation: cabinet, vertical on TS-35 rail. EMC: EN61326-1 Group 1 Class B emissions; industrial immunity.
General: TS-35 rail-mounted polyamide PA6.6 housing; pluggable screw terminals; wire cross-section 0.25–2.5 mm2; dimensions 12.5 × 99 × 115 mm (W × H × D); weight 0.15 kg; protection IP20.
Key specifications
- Model: DT1104 UI RS4 (DT1104 UI RS4 PS for 230 V AC/DC)
- Inputs: selectable current or voltage (0-20 mA / 4-20 mA / 0-10 V / 2-10 V)
- Transmitter supply: 22 VDC, 24 mA
- Output: RS485, MODBUS RTU/ASCII slave
- Galvanic isolation: three-way; 250 Veff / 2500 VDC (1 min.)
- Accuracy: ±0.05% @25 °C; non-linearity <0.01%
- Temperature coefficient: <25 ppm / °C (typ.)
- Dimensions: 12.5 × 99 × 115 mm; DIN rail (TS-35) mounting
- Power consumption: ≤1.6 W (24 V) / ≤1.8 W (230 V)
- Protection: IP20
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GALVANIC ISOLATORS
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