DatasheetThe 24 V power from the control system is transferred to the 2-wire transmitter with low voltage drop. The transmitter loop current is available galvanic isolated on output of the DC58. Additionally the measuring input accepts active 4 to 20 mA signals from 4-wire transmitters.
For communication with HART-Transmitters the internal 250 Ohm resistor on terminal 4 can be used. The slim housing with 11.2 mm wide saves significant space on the DIN-rail. To protect both maintenance personnel as well as downstream equipment against impermissibly high voltages, the DC 58 offers Protective Separation in according to EN 61140.
The DC 58 requires no additional power supply since the auxiliary power is obtained from the current loop without distorting it. This not only saves costs during installation, but also increases reliability.
Product line
| Devices | Order No. |
|---|---|
| Transmitter Repeater | DC 58 P |
Technical Data
Input
| Input signal | 4 to 20 mA |
| Operating current range | 2 to 23 mA |
| Transmitter Repeater operating | |
| Transmitter voltage drop | Approx. 4.7 V (Approx. 9.7 V with HART resistor, terminal 4) |
| Short circuit current | < 35 mA |
| Isolator operating | |
| Input resistor | 50 Ohm |
| Max. Input current | ≤ 50 mA |
Output
| Output signal | 4 to 20 mA |
| Supply voltage | 15 to 30 V DC |
| Residual ripple | < 10 mVrms |
General Data
| Transmission error | < 0.1 % full scale | |
| Load error | < 0.01 % FS / V (deviation from 24 VDC) | |
| Temperature coefficient 1) | < 0.01 % / K | |
| Cut-off frequency -3 dB | 500 Hz | |
| Response time T99 | 2 ms | |
| Test voltage | 3 kV AC, 50 Hz, 1 min. input against output | |
| Working voltage 2) (Basic Insulation) |
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. |
|
| 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) |
| 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 |
|
| Connections | 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 current
- 2 −Transmitter
- 3 +Transmitter / Input current
- 4 −HART transmitter (250 Ohm)
- 5 +Output loop
- 6 −Output loop