DatasheetFor applications where one signal combination only is used, the Isolation Amplifier DN 28 offers a cost-effective alternative.
A cross-connector for the auxiliary power supply ensures fast and easy installation. The slim housing with 11.2 mm width saves significant space on the DIN-rail. If required a measuring range compensation can be performed at the Zero/Scan potentiometers behind the front cover.
Analog signal processing guarantees precise measured values with short response times and outstanding signal reproduction at the output. Protective Separation and the 24 V AC/DC power supply make the DN 28 universally applicable for all measurement and industrial applications, as well as for building automation.
Product line
| Input | Output | Order No. |
|---|---|---|
| 0 … 20 mA | 0 … 20 mA | DN 28 P – 12 |
| 4 … 20 mA | 0 … 20 mA | DN 28 P – 32 |
| 0 … 10 V | 0 … 20 mA | DN 28 P – 52 |
| 0 … 20 mA | 4 … 20 mA | DN 28 P – 14 |
| 4 … 20 mA | 4 … 20 mA | DN 28 P – 12 |
| 0 … 10 V | 4 … 20 mA | DN 28 P – 54 |
| 0 … 20 mA | 0 … 10 V | DN 28 P – 16 |
| 4 … 20 mA | 0 … 10 V | DN 28 P – 36 |
| 0 … 10 V | 0 … 10 V | DN 28 P – 56 |
Technical Data
Input
| Input signal | 0 to 20 mA, 4 to 20 mA, 0 to 10 V see product line |
|
| Input resistance | Current input Voltage input |
approx. 5 Ohm approx. 1 MOhm |
| Overload | Current input Voltage input |
≤ 200 mA ≤ 250 V |
Output
| Output signal | 0 to 20 mA, 4 to 20 mA, 0 to 10 V see product line |
|
| Load | Current output Voltage output |
≤ 500 Ohm ≥ 2 kOhm |
| Residual ripple | < 10 mVrms | |
General Data
| Transmission error | < 0.2 % full scale | |
| Temperature coefficient 1) | < 0.02 %/K | |
| Cut-off frequency -3 dB | 200 Hz | |
| Response time T99 | 3.5 ms | |
| Test voltage | 3 kV AC, 50 Hz, 1 min., input against output against power supply |
|
| Working voltage (Basic Insulation) 2) |
600 V AC/DC for overvoltage category II and pollution degree 2 acc. to EN 61010 -1 |
|
| Protection against electrical shock 2) |
Protective separation according to EN 61140 by reinforced insulation in accordance with EN 61010-1 up to 300 V AC/DC for overvoltage category II and pollution degree 2 between all circuits. |
|
| Ambient temperature | Operation Transport and storage |
–20 °C to +60 °C (–4 °F to +140 °F) –35 °C to +85 °C (–31 °F to +185 °F) |
| Power supply | 24 V AC/DC, ± 15 % | AC: 48 to 62 Hz, approx. 2 VA DC: approx. 0.7 W |
| EMC 3) | EN 61326 -1 | |
| Construction | 11.2 mm (0.44″) housing, protection classt: IP 20 mounting on 35 mm DIN rail acc. to EN 60715 |
|
| Connection | Wire cross-section max. 2.5 mm² | |
| Weight | Approx. 50 g | |
- Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
- For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
- Minor deviations possible during interference.
Block diagram
Dimensions
Terminal assignments
- 1 +Input
- 2 −Input
- 3–
- 4–
- 5 +Output
- 6 −Output
- 7Power supply 24 V AC/DC
- 8Power supply 24 V AC/DC